Figure 36.3 illustrates the external reproductive organs of the female. The mons pubis is the anterior mound superficial to the symphysis pubis. Two folds of skin, the lateral labia majora, and the medial labia minora, surround the vaginal orifice and the urethral orifice. The urethral orifice is anterior to the vaginal. The vaginal orifice may be partially covered by a thin membrane termed the hymen. Between the urethral orifice and the mons pubis is the clitoris.

Most of the reproductive organs of the female are internal. The largest of these organs is the uterus. The uterus is a pear-shaped organ. The anterior, broad portion is the fundus, the central portion is the body, and the narrow portion is the cervix. The cervix opens into a muscular canal, the vagina, which opens externally between the labia minora.

Extending laterally from each side of the fundus of the uterus is a uterine tube (Fallopian tube) which ends in an enlarged funnel-shaped infundibulum. Finger-like projections of the infundibulum are fimbriae.

The infundibulum lies over and around the ovary. Usually one or two fimbriae touch the ovary. The ovary is the primary sex gland of the female, producing the major sex hormones as well as ova.

Figure 36.3 Female Reproductive System, external

Anus Clitoris Labia majora Labia minora Möns pubis Urethral orifice Vaginal orifice

The ovaries, uterine tubes, and uterus are held in place by ligaments. Examples of these are the ovarian and broad ligaments. The ovarian ligament connects the ovary to the uterus. The broad ligament holds the uterus in place.

Exercise 36.4

Correctly label Figures 36.4, 36.5, and 36.6. Exercise 36.5

Examine the model of the female reproductive structures. Identify the following: body of the uterus, cervix, external os of uterus, fimbriae, fundus of the uterus, infundibulum, ovary, uterine tube, ureter; urethra, urinary bladder; uterus, and vagina.

Femal Reproduction System Label
Figure 36.4 Female Reproductive System, midsagittal section

Infundibulum Ovary Symphysis pubis Urethral orifice Urinary bladder Uterine tube Uterus Vagina Vaginal orifice

Exercise 36.6 Cat dissection.

Using Figure 36.6 as a guide locate the following structures of the urinary system in the cat: urinary bladder; kidneys, renal artery, renal vein, ureters, and urethra.

Locate the small, light-colored ovaries posterior to the kidneys.

Locate the uterine tube with its infundibulum and fimbriae.

Note that the uterus in cats is branched. If your cat is pregnant, open the uterus and remove a fetus. Note the placenta and umbilical cord.

Exercise 36.7

Using a microscope, examine a prepared slide of an ovary and identify a Graafian follicle. Examine a section through a testis and identify spermatozoa.

Figure 36.5 Female Reproductive System, frontal section Body Cervix Fimbriae Fundus Infundibulum Ovarian ligament Ovary Vagina

Figure 36.6 Urinary and Reproductive Systems of the Female Cat

Figure 36.6 Urinary and Reproductive Systems of the Female Cat

Male Sex Gland

1. __The primary sex glands of the male are the two (1) .

3. __The distal end of the penis is known as the (3) .

4. __The erectile tissues of the penis are (4), (5) , and (6).

7. __The fold of skin covering the glans penis is the (7).

8. __The secondary sex glands in the male are (8) . (9) , and


11. _ The largest secondary sex gland in the male is the (11) .

12. _ Sperm travel from the epididymis in the (12) .

13. _ The duct within the prostate gland which empties into the urethra is the (13) .

14. _ The smallest of the secondary sex glands in the male are the (14).

16. _ The primary female sex organs are the (16) .

17. _ These organs are held in place by the (17) ligaments.

18. _ An ovum is carried from the ovary to the uterus through a (18) tube.

21. _ The finger-like projections at the end of the uterine tubes are (21).

22. _ The vagina opens externally between the medial and lateral (22) .

True/false. The vagina and the urethra share a common opening in humans.

The broad funnel at the end of the uterine tube is an £241.

Broad Ligament Anatomy Ureter

■illWlm^mmim Graafian follicle

Broad Ligament Anatomy Ureter
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