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    Rocky Mountain Oysters
    ::落岩山牡蛎

    First, they are peeled and pounded flat. Then, they are coated in flour, seasoned with salt and pepper, and deep fried. What are they? They are often called Rocky Mountain oysters, but they don’t come from the sea. They may also be known as Montana tendergroin, cowboy caviar, or swinging beef — all names that hint at their origins. Here’s another hint: they are harvested only from male , such as bulls or sheep. What are they? In a word: testes .
    ::首先,他们被剥皮和被打扁,然后,他们被涂在面粉中,被盐和胡椒,被深炸。它们是什么?它们通常被称为落基山牡蛎,但并非来自海洋。它们也可以被称为蒙大拿嫩芽、牛仔鱼子酱或摇摆牛肉 — — 这些都是它们起源的暗示。这里还有另一个提示:它们只是从公牛或绵羊等男性身上收获的。它们是什么?用一个词来说:睾丸。

    Testes and Scrotum
    ::测试和阴囊

    The two testes (singular, testis) are sperm- and testosterone-producing gonads in male mammals , including male humans. These and other organs of the human male reproductive system are shown in the figure . The testes are contained within the scrotum , a pouch made of skin and smooth muscle that hangs down behind the penis .
    ::两种睾丸(同卵、睾丸)是雄性哺乳动物,包括雄性人类的精子和睾丸激素,这些和人类生殖系统的其他器官在图中显示。这些睾丸包含在阴囊内,一个由皮肤和光滑肌肉制成的袋子,挂在阴茎后面。

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    The male reproductive system includes external organs (such as the penis and testes), and internal organs (such as the prostate gland and seminal vesicles). This view shows the organs from the side, so only one of each paired organ (such as the testes and seminal vesicles) is pictured.
    ::男性生殖系统包括外部器官(如阴茎和睾丸)和内脏器官(如前列腺和前列腺和前列腺卵囊),这一视图显示侧侧的器官,因此每个配对器官(如睾丸和前列腺睾丸)中只有一个被描绘。

    Testes Structure
    ::测试结构

    The testes are filled with hundreds of tiny tubes, called seminiferous tubules , which are the functional units of the testes. As shown in the cross-sectional drawing of a testis , the seminiferous tubules are coiled and tightly packed within divisions of the testis called lobules. Lobules  are separated from one another by internal walls (or septa).
    ::睾丸中充斥着数百个微小的管子,称为半圆形管子,它们是睾丸的功能单位。 正如睾丸的截面图所示,半圆形管子在睾丸中被缠绕和紧紧地包扎在叫作圆柱的部位内。圆柱子被内部墙隔开(或塞普塔 ) 。

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    This cross-sectional drawing includes a testis on the left, its corresponding epididymis in the center, and its related vas (or ductus) deferens on the right. The three structures are connected to create a tract through which sperm can travel.
    ::这个横截面图包括左侧的睾丸、中间相应的相近性以及右侧的相关血管(或结构)延后。 这三个结构连接在一起,以创建精子可以穿行的通道。

    Tunica
    ::图尼卡

    The multi-layered covering of each testis, called the tunica, protects the organ, ensures its supply, and separates the testis into lobules. There are three layers of the tunica: the tunica vasculosa, tunica albuginea, and tunica vaginalis. The latter two layers are labeled in the drawing above.
    ::每个睾丸的多层覆盖,称为图尼卡,保护器官,确保器官的供应,并将睾丸分解为大肠杆菌。图尼卡有三层:图尼卡血管、图尼卡淋浴、图尼卡淋浴和图尼卡阴道。 后两层在上图中标有标签。

    • The tunica vasculosa is the innermost layer of the tunica. It consists of connective tissue and contains arteries and veins that carry blood to and from the testis.
      ::图妮卡血管血管是图妮卡最深层的一层,由连接组织组成,内含动脉和血管,与睾丸和睾丸的血液相连。
    • The tunica albuginea is the middle layer of the tunica. It is a dense layer of fibrous tissue that encases the testis. It also extends into the testis, creating the septa between lobules.
      ::蛋白藻是蛋白藻的中间层,是浓密的纤维组织层,它把睾丸嵌入体内,它也延伸到睾丸,在卵巢之间产生香味。
    • The tunica vaginalis is the outmost layer of the tunica. It actually consists of two layers of tissue separated by a thin fluid layer. The fluid reduces friction between the testes and the scrotum.
      ::阴道阴道是Tunica的最外层,实际上由两层组织组成,用薄液层隔开,液体减少睾丸和阴囊之间的摩擦。
    Seminiferous Tubules
    ::隐性肿瘤

    One or more seminiferous tubules are tightly coiled within each of the hundreds of lobules in the testis. A single testis normally contains a total of about 30 m (90 ft) of these tightly packed tubules! As shown in the cross-sectional drawing of a seminiferous tubule , the tubule contains in several different stages of ( spermatogonia , spermatocytes, spermatids , and spermatozoa). The seminiferous tub ule  is also lined with epithelial called Sertoli cells . These cells release a (inhibin) that helps regulate sperm production. Adjacent Sertoli cells are closely spaced so large molecules cannot pass from the blood into the tubules. This prevents the male’s immune system from reacting against the developing sperm, which may be antigenically different from his own self tissues. Cells of another type, called Leydig cells , are found between the seminiferous tubules. Leydig cells produce and secrete testosterone .
    ::单睾丸通常含有大约30米( 90英尺) 这些紧凑的管状体。 正如半圆形管的横截面图所示, 管状体包含若干不同阶段( 长毛球、 精子细胞、 精子和精子体) 。 半圆形管体也与缩皮细胞相近。 这些细胞释放出一个( INHIbin) , 帮助调节精子的生产。 相邻的塞托利细胞空间很近, 巨大的分子无法从血液中进入管状体。 这使得雄性免疫系统无法对发育中的精子作出反应, 精子可能与雄性组织自身组织有反基因差异。 另一种类型的细胞, 叫做 Leydig 细胞, 在半圆形管状管间找到。 莱伊迪细胞产生和秘密睾丸。

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    A cross-sectional drawing of a testis and seminiferous tubule shows the lining of Sertoli cells and sperm in different stages of development within the tubule, and Leydig cells surrounding the tubule
    ::睾丸和半圆形管管的横截图显示在管内不同发育阶段的塞托利细胞和精子的衬衬,以及管周围的莱迪格细胞。

    Other Scrotal Structures
    ::其他围状结构

    Besides the two testes, the scrotum also contains a pair of organs called epididymes (singular, epididymis) and part of each of the paired vas deferens (or ducti deferens). Both structures play important functions in the production or transport of sperm.
    ::除了两个睾丸外,阴囊中还有一对叫做肾上腺的器官(单体、单体)和每种配对的管状延后机(或管状延后机)的一部分。 这两个结构在精子的生产或运输方面起着重要作用。

    Epididymis
    ::埃皮迪迪米斯

    The seminiferous tubules within each testis join together to form ducts (called efferent ducts) that transport immature sperm to the epididymis associated with that testis. Each epididymis (plural, epididymes) consists of a tightly coiled tubule with a total length of about 6 m (20 ft). As shown in the figure , the epididymis is generally divided into three parts: the head (which rests on top of the testis), the body (which drapes down the side of the testis), and the tail (which joins with the vas deferens near the bottom of the testis). The functions of the two epididymes are to mature sperm, and then to store that  mature sperm until they leave the body during an ejaculation , when they pass the sperm on to the vas deferens.
    ::每个睾丸内的半圆形管状管状合在一起形成管道(称为“发热管状”),将不成熟的精子输送到与睾丸相关的上部。每个膜状管状管状(花状管状、膜状管状)都由一个总长度约6米(20英尺)的紧固凝结管状管状组成。如图所示,膜状管状一般分为三个部分:头部(在睾丸顶部)、身体(在睾丸侧下方的窗帘)和尾部(与睾丸底边的血管接合)。两个膜状管状管状的功能是成熟精质,然后储存成熟的精液,直到它们将精液输送到血管后部时离开身体。

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    Each epididymis consists of a (a) head, (b) body, and (c) tail. The latter is directly connected to the (d) vas deferens. The gray egg-shaped structure in the drawing is the testis.
    ::每个相片由(a) 头部、(b) 身体和(c) 尾部组成,尾部与(d) 罐体后部直接相连。绘图中的灰蛋形结构是睾丸。

    Vas Deferens
    ::Vas Deferens 防守

    The vas deferens, also known as sperm ducts, are a pair of thin tubes, each about 30 cm (1 ft) long, which begin at the epididymes in the scrotum, and continue up into the pelvic cavity. They are composed of ciliated epithelium and smooth muscle. These structures help the vas deferens fulfill their function of transporting sperm from the epididymes to the ejaculatory ducts, which are accessory structures of the male reproductive system.
    ::螺旋伸缩管,又称精子管,是一对薄管,每根大约30厘米(1英尺)长,从阴囊的粘合管开始,一直持续到骨盆腔,由结结膜的上皮和光滑的肌肉组成,这些结构帮助螺旋延缩管完成将精子从粘合管运到阴道的功能,后者是男性生殖系统的附属结构。

    Accessory Structures
    ::结构结构

    In addition to the structures within the scrotum, the male reproductive system includes several internal accessory structures that are shown in the detailed drawing . They include the ejaculatory ducts, seminal vesicles , and the prostate and bulbourethral (Cowper’s) glands.
    ::除了阴囊内的结构外,男性生殖系统还包括几个内部附属结构,如详细图示所示。 这些结构包括导管管、精液囊、前列腺和风球(Cowper)腺。

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    This detailed cross-sectional drawing of the male reproductive system clearly shows the accessory organs of reproduction, including the seminal vesicles, prostate gland, and Cowper’s (bulbourethral) glands. Secretions from these structures help to form semen.
    ::雄性生殖系统的这一详细的跨部门图解清楚地表明了生殖的辅助器官,包括精细卵囊、前列腺和Cowper(Bulbourethral)腺。 这些结构的分泌有助于形成精液。

    Seminal Vesicles
    ::精尖水囊

    The seminal vesicles are a pair of glands that each consist of a single tube, which is folded and coiled upon itself. Each vesicle is about 5 cm (2 in.) long and has an excretory duct that merges with the vas deferens to form one of the two ejaculatory ducts. Fluid secreted by the seminal vesicles into the ducts makes up about 70 percent of the total volume of semen , which is the sperm-containing fluid that leaves the penis during an ejaculation. The fluid from the seminal vesicles is alkaline, so it gives semen a basic pH that helps prolong the lifespan of sperm after it enters the acidic secretions inside the female vagina . Fluid from the seminal vesicles also contains , fructose (a simple sugar), and other substances that help nourish sperm.
    ::精液微粒是一双腺,每条腺由单管组成,折叠并缠绕在自己身上。每个精液大约5厘米(2英寸)长,并且有一条排气管,与血管延后线结合,形成两条阴道。精液微粒微粒渗入管道的流体约占精液总量的70%,即精液,在射精过程中离开阴茎的精液。精液是碱性,因此,精液给精液一个基本的pH值,有助于精液进入雌性阴道内的酸分泌物后延长精液的寿命。精液中含有精液(一种简单的糖)和其他有助于养精子的物质。

    Ejaculatory Ducts
    ::阴道管

    The ejaculatory ducts form where the vas deferens join with the ducts of the seminal vesicles in the prostate gland . They connect the vas deferens with the urethra . The ejaculatory ducts carry sperm from the vas deferens, as well as secretions from the seminal vesicles and prostate gland that together form semen. The substances secreted into semen by the glands as it passes through the ejaculatory ducts control its pH and provide nutrients to sperm, among other functions. The fluid itself provides sperm with a medium in which to “swim.”
    ::血管延后与前列腺中精液囊的管子连接。它们连接血管延后与尿道。血管管子含有血管延后子的精子,以及精液和前列腺的分泌,这些分泌合在一起形成精液。通过导管管管管通其pH和为精液提供营养素等功能时,腺体将物质隐藏在精液中。液体本身为精液提供了“丝质”的介质。

    Prostate Gland
    ::前列腺

    The prostate gland is located just below the seminal vesicles. It is a walnut-sized organ that surrounds the urethra and its junction with the two ejaculatory ducts. The function of the prostate gland is to secrete a slightly alkaline fluid that constitutes close to 30 percent of the total volume of semen. Prostate fluid contains small quantities of proteins, such as . In addition, it has a very high concentration of zinc, which is an important nutrient for maintaining sperm quality and motility .
    ::前列腺位于精液微粒下方,是围绕尿道及其与两条导管连接的胡桃大小的器官。前列腺的功能是将接近精液总量30%的略微碱性液体秘密起来。前列腺液体含有少量蛋白,例如。此外,它有非常高的锌浓度,它是维持精子质量和运动能力的重要营养素。

    Bulbourethral Glands
    ::Bulbourthral 粗金体

    Also called Cowper’s glands, the two bulbourethral glands are each about the size of a pea and located just below the prostate gland. The bulbourethral glands secrete a clear, alkaline fluid that is rich in proteins. Each of the glands has a short duct that carries the secretions into the urethra, where they make up a tiny percentage of the total volume of semen. The function of the bulbourethral secretions is to help lubricate the urethra and neutralize any urine (which is acidic) that may remain in the urethra.
    ::同样被称为Cowper的腺,两根灯泡与豆子大小差不多,位于前列腺下方。灯泡的腺分泌出一个纯碱性、富含蛋白的液体。每根腺有一条短管,将分泌带入尿道,占精液总量的一小部分。灯泡的分泌功能是帮助尿素润滑和中和尿液(酸性),尿液可能留在尿道中。

    Penis
    ::Penis 精小

    The penis is the external male organ that has the reproductive function of delivering sperm to the female reproductive tract. This function is called intromission. The penis also serves as the organ that excretes urine.
    ::阴茎是外出男性器官,其生殖功能是将精子送到雌性生殖道,该功能称为内向,阴茎也是排出尿液的器官。

    Structure of the Penis
    ::Penis的组织结构

    The structure of the penis and its location relative to other reproductive organs are shown in the diagram . The part of the penis that is located inside the body and out of sight is called the root of the penis. The shaft of the penis is the part of the penis that is outside the body. The enlarged, bulbous end of the shaft is called the glans penis.
    ::阴茎的结构及其相对于其他生殖器官的位置在图表中显示。阴茎在身体内和看不到的地方部分被称为阴茎根。阴茎的轴是阴茎在身体外的部分。轴的宽大、宽阔的端是小腿。

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    This cross section shows the internal anatomy of the penis and related structures. The corpus spongiosum is the column of erectile tissue that contains the urethra. It is sometimes referred to simply as corpus cavernosum, like the other two columns of spongy tissue in the penis.
    ::横截部分显示了阴茎和相关结构的内部解剖学,海绵体是内含尿素的勃起组织柱,有时被简单地称为山洞,就像阴茎中另外两根海绵组织柱一样。

    Urethra
    ::Urethra

    The urethra passes through the penis to carry urine from the bladder — or semen from the ejaculatory ducts — through the penis and out of the body. After leaving the urinary bladder , the urethra passes through the prostate gland, where the urethra is joined by the ejaculatory ducts. From there, the urethra passes through the penis to its external opening at the tip of the glans penis. Called the external urethral orifice, this opening provides a way for urine or semen to leave the body.
    ::尿道穿透阴茎,从膀胱或阴道的精液中尿出,从阴茎和身体中尿出;尿道离开膀胱后,尿道穿过前列腺,尿道与泌尿管连接在一起;从那里,尿道穿过阴茎,到阴茎顶端的阴茎外部开口;称为外尿道,这一开口为尿液或精液离开身体提供了一条途径。

    Tissues of the Penis
    ::阴道组织

    The penis is covered with skin (epithelium) that is unattached and free to move over the body of the penis. In an uncircumcised male, the glans penis is also mainly covered by epithelium, which (in this location) is called the foreskin, and below which is a layer of mucous membrane . The foreskin is attached to the penis at an area on the underside of the penis called the frenulum.
    ::阴茎上覆有未绑住的皮肤(皮囊),可以自由地在阴茎身体上移动。在未受割伤的男性身上,阴茎也主要由上皮环覆盖,(在此处)该皮囊称为外皮,下面是一层粘膜,在阴茎下边一个称为发光膜的区域,头皮附在阴茎上。

    As shown in the drawing, the interior of the penis consists of three columns of spongy tissue that can fill with blood and swell in size, allowing the penis to become erect. This spongy tissue is called corpus cavernosum (plural, corpora cavernosa). Two columns of this tissue run side by side along the top of the shaft, and one column runs along the bottom of the shaft. The urethra runs through this bottom column of spongy tissue, which is sometimes called corpus spongiosum. The glans penis also consists mostly of spongy erectile tissue. Veins and arteries run along the top of the penis, allowing blood circulation through the spongy tissues.
    ::如绘画所示,阴茎的内部由三柱海绵组织组成,可以填充血液,体积膨胀,使阴茎能够勃起。这种海绵组织称为“山洞状”组织(花生、花岗岩),其中两柱组织在井顶并排,一柱组织在井底。尿素穿过海绵组织底柱,有时称为“海绵肉”。阴茎也主要由海绵肉组织组成。阴茎和动脉沿着阴茎顶部运行,允许血液通过海绵组织流动。

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    The penis consists mostly of spongy tissues that can fill with blood, stiffening the organ. The corpus cavernosum urethrae is now usually called corpus spongiosum.
    ::阴茎大部分由海绵组织组成,它们可以填充血液,使器官僵硬。

    Feature: Human Biology in the News
    ::特著:《新闻》中的人类生物学

    Lung , heart, , and other organ transplants have become relatively commonplace, so when they occur, they are unlikely to make the news. However, when the nation’s first penis transplant took place, it was considered very newsworthy.
    ::肺部、心脏和其他器官移植已变得相对常见,因此当它们出现时,它们不太可能发布新闻。 然而,当该国第一次进行阴茎移植时,它被认为是非常有新闻价值的。

    In 2016, Massachusetts General Hospital in Boston announced that a team of its surgeons had performed the first penis transplant in the United States. The patient who received the donated penis was a 64-year-old patient. During the 15-hour procedure, the intricate network of nerves and of the donor penis were connected with those of the penis recipient. The surgery went well, but doctors reported it would be a few weeks until they would know if normal urination would be possible, and even longer before they would know if sexual functioning would be possible. At the time that news of the surgery was reported in the media, the patient had not shown any signs of rejecting the donated organ. The surgeons also reported they were hopeful that such transplants would become relatively common, and that patient would expand to include  wounded warriors and transgender males seeking to transition.
    ::2016年,波士顿马萨诸塞州总医院宣布,一家外科医生小组在美国进行了第一次阴茎移植手术;接受捐赠阴茎的病人是64岁的病人;在15小时手术期间,神经和捐赠者阴茎的复杂网络与阴茎的接受者有着联系;手术进展顺利,但医生报告说,只有几周后他们才能知道正常的排尿是否可行,甚至更早地知道性功能是否可行;在媒体报道手术的消息时,病人没有显示任何拒绝捐赠器官的迹象;这些病人还报告说,他们希望这种移植会变得相对常见,病人会扩大到受伤的战士和试图过渡的变性男性。

    The 2016 Massachusetts operation was not the first penis transplant ever undertaken. The world’s first successful penis transplant was actually performed in 2014 in Cape Town, South Africa. A young man who had lost his penis from complications of a botched circumcision at age 18 was given a donor penis three years later. That surgery lasted nine hours and was highly successful. The young man made a full recovery and regained both urinary and sexual functions in the transplanted organ.
    ::2016年马萨诸塞州手术并不是第一次进行阴茎移植。 2014年,在南非开普敦进行了世界上第一次成功的阴茎移植手术。 一名18岁时因被割破的切除手术并发症而失去阴茎的年轻人在三年后获得了献血阴茎。 手术持续了9小时,非常成功。 年轻人完全康复并恢复了移植器官的尿和性功能。

    In 2005, a man in China also received a donated penis in a technically successful operation. However, the patient asked doctors to reverse the procedure just two weeks later, because of psychological problems associated with the transplanted organ for both himself and his wife.
    ::2005年,中国一名男子在一次技术上成功的手术中也接受了一个捐赠的阴茎,但是,就在两周后,病人要求医生改变手术程序,因为移植器官给他本人和妻子带来的心理问题。

    Summary
    ::摘要

    • The two testes are sperm- and testosterone-producing male gonads. They are contained within the scrotum, a pouch that hangs down behind the penis. The testes are filled with hundreds of tiny, tightly coiled seminiferous tubules, where sperm are produced. The tubules contain sperm in different stages of development and also Sertoli cells, which secrete substances needed for sperm production. Between the tubules are Leydig cells, which secrete testosterone.
      ::这两个睾丸是精子和睾丸酮产卵的雄性鼻腺,它们包含在阴囊内,一个挂在阴茎后面的袋子里。睾丸中装满了数百个细小的、紧紧缠绕的半圆形管,产生精子。管子中装有处于不同发育阶段的精子,还有Sertoli细胞,这些细胞是精子生产所需的隐秘物质。在管子中,有分泌睾丸的细胞。
    • Also contained within the scrotum are the two epididymes. Each epididymis is a tightly coiled tubule where sperm mature and are stored until they leave the body during an ejaculation.
      ::阴囊内还含有两个相片,每个相片都是一个紧紧的管状管状管,精子在那里成熟并储存,直到在射精时离开尸体。
    • The two vas deferens are long, thin tubes that run from the scrotum up into the pelvis. During ejaculation, each vas deferens carries sperm from one of the two epididymes to one of the pair of ejaculatory ducts.
      ::两粒子的延展时间很长,薄管从阴囊跑到骨盆。在射精过程中,每粒子的延展时间从两粒子中的一种携带精子到两条导管中的一种携带精子。
    • The two seminal vesicles are glands within the pelvis that secrete fluid through ducts into the junction of each vas deferens and ejaculatory duct. This alkaline fluid makes up about 70 percent of semen, the sperm-containing fluid that leaves the penis during ejaculation. Semen contains alkaline substances and nutrients that sperm need to survive and “swim” in the female reproductive tract.
      ::两种精液是卵巢中的腺,通过管子将液分泌到每个血管的接缝处和射精管。这种碱性液约占精液的70%,这种精液是精液,在射精过程中离开阴茎的精液。 精液含有精子生存所需的碱性物质和养分,在雌性生殖道中“游动 ” 。
    • The paired ejaculatory ducts form where the vas deferens joins with the ducts of the seminal vesicles in the prostate gland. They connect the vas deferens with the urethra. The ejaculatory ducts carry sperm from the vas deferens, as well as secretions from the seminal vesicles and prostate gland that together form semen.
      ::血管延后与前列腺中精液囊的管子连接。 它们连接血管延后与尿道。 血管延后带带含有血管延后带的精子, 以及精液和前列腺的分泌, 组成精液。
    • The prostate gland is located just below the seminal vesicles, and it surrounds the urethra and its junction with the ejaculatory ducts. The prostate secretes an alkaline fluid that makes close to 30 percent of semen. Prostate fluid contains a high concentration of zinc, which sperm need to be healthy and motile.
      ::前列腺位于基质微粒下方,它环绕着尿道及其与泌尿管的接合点。前列腺分泌了接近30%的精液。前列腺含有高浓度的锌,精子需要健康和运动。
    • The paired bulbourethral glands are located just below the prostate gland. They secrete a tiny amount of fluid into semen. The secretions help lubricate the urethra and neutralize any acidic urine it may contain.
      ::配对的灯泡球腺位于前列腺下方,它们将少量液分泌到精液中,分泌有助于润滑尿,中和任何可能含有的酸性尿液。
    • The penis is the external male organ that has the reproductive function of intromission, which is delivering sperm to the female reproductive tract. The penis also serves as the organ that excretes urine. The urethra passes through the penis and carries urine or semen out of the body. Internally, the penis consists largely of columns of spongy tissue that can fill with blood and make the penis stiff and erect. This is necessary for sexual intercourse so intromission can  occur.
      ::阴茎是具有直肠生殖功能的外部男性器官,它向雌性生殖道输送精子;阴茎也是排出尿液的器官;尿道通过阴茎,从身体中携带尿液或精液;在内部,阴茎主要由海绵组织柱组成,可以填充血液,使阴茎僵硬和勃起;这是发生如此直肠性行为所必需的。

    Review
    ::回顾

    1. What are the testes? Where are they located?
    ::1. 睾丸是什么?它们在哪里?

    2. Describe the structure of a testis.
    ::2. 描述睾丸的结构。

    3. Identify the epididymis and its functions.
    ::3. 说明其经历及其职能。

    4. What are the vas deferens? What do they do?
    ::4. 宽限是多少?它们做什么的?

    5. Where are the seminal ves icles  located? What is their reproductive role?
    ::5. 精锐的卵囊的位置在哪里?其生殖作用是什么?

    6. Which parts of the male reproductive system are connected by the ejaculatory ducts? What fluids enter and leave the ejaculatory ducts?
    ::6. 男性生殖系统的哪些部分与输血管相连?什么液体进入和离开输血管?

    7. Identify the location of the prostate gland relative to other male reproductive organs. What is the prostate’s function?
    ::7. 确定前列腺相对于其他男性生殖器官的位置,前列腺的功能是什么?

    8. Where are the bulbourethral glands? What is their function?
    ::8. 灯泡的腺体在哪里?它们的作用是什么?

    9. Relate the structure of the penis to its two basic functions.
    ::9. 将阴茎的结构与其两个基本功能联系起来。

    10. For each of the descriptions below, match the part of the male reproductive system from the list that best fits it. Each part is used only once.
    ::10. 下面的每一个说明都与最符合男性生殖系统的部分相匹配,每个部分只使用过一次。

    Parts of the male reproductive system: urethra, seminal vesicle, epididymis, testes
    ::男性生殖系统的一部分:尿道、精液、肾上腺、睾丸

    a. Sperm are produced here.
    ::a. 精子在这里产生。

    b. Sperm mature here.
    ::b. 精液在此成熟。

    c. Sperm are transported through the penis in this structure.
    ::c. 精液通过这种结构中的阴茎运输。

    d. This is a gland that produces fluid that is a major component of semen.
    ::d. 这是产生液体的腺,液体是精液的主要成分。

     

    11. A vasectomy is a form of birth control for men that is performed by surgically cutting or blocking the vas deferens so that sperm cannot be ejaculated out of the body. Do you think men who have a vasectomy emit semen when they ejaculate? Why or why not?
    ::11. 输精管切除是对男人的一种节育形式,通过外科切除或挡住血管延后剂,使精子不能从身体中射出,你认为有输精管切除术的男人在射出精液时会射出精液吗?为什么或为什么没有?

     

    12. Which of the following structures are located internally within the body? Choose all that apply.
    ::12. 以下哪些结构位于机构内部?选择所有适用的结构。

    a. testes
    ::a. 睾丸

    b. seminal vesicles
    ::b. 精细囊

    c. epididymis
    ::c. 相继性

    d. prostate
    ::d. 前列腺

    e. glans penis
    ::e. glans 阴茎

    Explore More
    ::探索更多

    Morning erections are part of the normal sleep cycle in men .  Learn more here:
    ::早起是男性正常睡眠周期的一部分。