4 uterus
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4. Uterus. Hollow, muscular, pear-shaped organ Located medially in the anterior portion of the pelvic cavity Body of the uterus (22) : upper 2/3 Cervix (5) : lower 1/3 Connects to vagina (6) Cervical orifice (24) : opening from uterus to vagina. Uterine Wall.

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4. Uterus

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4 uterus

4. Uterus

  • Hollow, muscular, pear-shaped organ

  • Located medially in the anterior portion of the pelvic cavity

  • Body of the uterus (22): upper 2/3

  • Cervix (5):

    • lower 1/3

    • Connects to vagina (6)

  • Cervical orifice (24): opening from uterus to vagina


Uterine wall

Uterine Wall

  • Endometrium(20)– mucosal layer

  • Myometrium(21) - _______ layer

  • Perimetrium(23) – serosal (thin, watery-filled) layer


6 vagina

6. Vagina

  • Fibromuscular tube that extends from the uterus to the outside of the body

  • Located posterior to urinary bladder (11) and urethra (12), and anterior to rectum (14) (see Fig. 19.7 diagram)

  • Functions:

    • Conveys uterine secretions

    • Receives penis during intercourse

    • Channel for birth


Vaginal wall

Vaginal Wall

  • Inner mucosal layer

    • LACKS mucosal glands

    • Mucous comes from uterine glands and vestibular glands at mouth of vagina

  • Middle muscular layer

    • Mostly smooth muscle (involuntary)

    • Bulbospongiosus muscle (voluntary) closes off vaginal orifice (7)


Vaginal wall continued

Vaginal Wall, continued…..

3. Outer fibrous layer

  • Dense connective tissue

  • Attaches vagina to surrounding organs

    • Urethra (13)

    • Rectum (14)


Female external accessory organs

Female External Accessory Organs

  • Labia majora

  • Labia minora

  • Clitoris

  • Vestibule


9 labia majora

9. Labia Majora

  • Enclose and protect other external accessory organs

  • Correspond to male scrotum

  • Composed of 2 rounded folds of adipose tissue, smooth muscle, and skin that lie on either side of other the other accessory organs

  • Anterior ends join to form the mons pubis


8 labia minora

8. Labia Minora

  • 2 flattened folds that lie between the labia majora

  • Join with the labia majora posteriorly

  • Merge anteriorly to form a protective, hoodlike covering around the clitoris


10 clitoris

10. Clitoris

  • Small projection at the anterior end of the vulva (the external accessory organs that surround the vaginal opening)

  • Corresponds to male penis:

    • 2 columns of erectile tissue (corpora cavernosa)

    • Glans, erectile tissue at anterior end, contains sensory nerve endings

  • So what would be its function?


Vestibule

Vestibule

  • The space enclosed between the labia minora

  • Vestibular glands:

    • 2 at the opening of the vagina

    • Correspond to male bulbourethral glands (FUNCTION?)

  • Vestibular bulbs:

    • lie beneath the mucosa of the vestibule on either side

    • A mass of erectile tissue


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