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| double sac of skin, muscle, and connective tissue on the exterior of the body just ventral to the anus. Normally the primary reproductive organs, the testes, are inside the sac, however in young males, the testes may be retracted into the abdominal cavity |
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| a combined layer of muscle and fibrous tissue just beneath the scrotal skin |
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| the primary sex organ; produces microscopic reproductive cells called sperm or spermatozoa; produce male hormones known as androgens (major one is testosterone) |
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| thin but tough covering seen on the surface of the testis |
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| round cord extending from the testis to the abdominal cavity; composed of the vas deferens, testicular artery, testicular vein, nerve, and lymphatics which are all bound together in a sheath containing fatty tissue |
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| originates from the aorta just caudal to the level of the kidney and descends through the spermatic cord to the testis |
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| runs from the testis through the spermatic cord and empties into either the postcaval vein or into the renal vein |
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| highly coiled tube closely applied to the surface of the testis |
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| sperm duct; tube which continues from the epididymis, courses through the spermatic cord, passes through the abdominal wall, loops over the ureter, terminates at the urethra; carries sperm from the testis to the urethra |
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| small passage in the abdominal wall through which the spermatic cord passes |
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| runs from the urinary bladder through the penis to the outside; carries urine, sperm, and seminal fluid |
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| small, hard gland surrounding the urethra just caudal to the urinary bladder; near the entrance of the two sperm ducts to the urethra; secretes a fluid which will carry the sperm to the outside, seminal fluid, which seems to protect and mobilize the sperm |
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| the male copulatory organ which is visible on the ventral aspect of the cat |
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| outer pocket of skin of penis; also known as the foreskin |
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| distal portion of the penis containing a number of small spines in the cat |
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| opening of the urethra at the end of the glans penis |
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| beneath the skin on either side of the rectum near the anus; they produce an odiferous secretion that enters the anus and presumably is used for sexual attraction or stimulation; lacking in humans |
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| two cauliflower-shaped organs which produce seminal fluid |
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| primary sex organs of the female found just caudal to the kidneys and are sometimes buried in a mass of fat; contain follicles which contain developing eggs; produces hormones estrogen and progesterone |
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| arise from the aorta caudal to the level of the kidneys and run to the ovaries |
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| found parallel to the ovarian arteries; return blood from the ovaries to either the postcaval vein or to the renal vein |
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| very short and highly coiled tube adjacent to the ovary; fertilization usually occurs here; leads to the uterine horn |
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| long tubular structures continuing from the short fallopian tubes; in the cat, fertilized eggs typically implant and undergo development here; humans lack these in adulthood, instead, the fallopian tubes lead to a single pear-shaped uterus |
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| mesentery supporting the ovary, fallopian tube, and the uterine horn; extends to the lateral body wall |
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| part of the uterus where the two uterine horns join; lies dorsal to the urethra |
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| continues from the body of the uterus caudally through the pelvic canal; lies between the urethra and large intestine; unites with the urethra in the cat |
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| the common passageway after the union of the vagina and the urethra |
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| opening of the vestibule to the exterior |
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| the lateral lips bordering the urogenital opening |
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| the labia and urogenital opening together |
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| outermost layer of the uterus |
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| middle layer of the uterus; composed of interlacing smooth muscle bundles which are separated by connective tissue |
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| inner layer of tissue in the uterus; varies cyclically in correlation with ovarian secretory activity |
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| innermost portion of the endometrium; composed of columnar epithelium and found adjacent to the uterine cavity |
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| numerous glands seen in the endometrium which open into the uterine cavity; produce "uterine milk" during early pregnancy which is the first source of nourishment for the early embryo |
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| numerous tubules which make up most of the testis; concerned with the production of sperm cells |
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| seen in the center of a seminiferous tubule under high power |
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| interstitial cells of Leydig |
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| located between the seminiferous tubules; important in the production of androgens |
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| inside seminiferous tubules, produce sperm cells |
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