Pig Dissection Reproductive Anatomy

Pig Dissection
Reproductive Anatomy
Fall 2008
Human Female Anatomy
Human Female Anatomy
Female Reproductive Structure and
Function
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5. Ovaries
Two, pelvic cavity
Produce hormones, eggs (ova)
4. Fallopian Tubes (oviducts)
Tubes, transport ovum, site of fertilization
Can get blocked; Permanent birth control = tubal ligation
Ectopic Pregnancy
3. Uterus
Womb, 3 in. long, placenta develops here
2. Cervix
Opening into uterus, must dilate for birth
1. Vagina
Tube, 3 – 4 inches
Birth canal, receives male penis
Female Reproductive Cancer Sites
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Ovarian, uterine, cervical
May require hysterectomy
Causes?
Multiple sexual partners can increase risk
HPV virus – risk of cervical
Herpes virus – risk of uterine
Tests?
Pelvic Exam, Pap smear
HPV
• Human
Papilloma Virus
• Genital Warts
Cervical Cancer
• Gardasil
Female Human vs. Pig Anatomy
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Pig has bihorned uterus
Two uterine horns fuse into
uterine body
Human - 3 separate openings
Vagina, urethra, anus
Pig only two
Anus, combo vagina/urethra
Pig urethra fuses with vagina to
form
urogenital sinus
Opens to the outside via the
urogenital orifice (opening)
Female Pig Anatomy
Human Male Anatomy
Human Male Anatomy
Male Reproductive Structure and
Function
• 1. Testes
• Produce hormones, sperm
• Two, develop in pelvic cavity, drop into
scrotum by passing through a hole
(ring) inguinal ring
in inguinal ligament
• Inguinal ligament stretches
across pubic bone to top of pelvis
• Spermatic Cord suspends testes in
scrotum; contains artery, vein, nerve
• Epididymis – sac on top of testes,
where sperm gain flagellum
• 2. Scrotum
• Holds testes
• Why suspended in scrotum?
• 3. Vas Deferens
• Tube, about 12 inches
• Carries sperm from testes up into body to
urethra
• Cut in a vasectomy
• 7. Urethra
• Tube that carries urine out bladder into
penis
• Vas deferens empty into this
• Also carries semen
• Semen = liquid in which sperm swim
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5. Prostate Gland
Wraps around posterior urethra
Lies on top of rectum
Adds fructose and alkaline fluid to semen
Why?
4. Seminal Vesicles
Two, lie close to urethra, below prostate
Also add fructose and alkaline fluid to semen
6. Cowper’s Glands
Also called Bulbourethral glands
Lie close to urethra
Secrete lubricating fluid called Pre ejaculate
Usually occurs prior to ejaculation
when male is aroused
• Can contain sperm and impregnate a female
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8. Penis
Contains urethra
Can release urine and semen
Places semen in female
Male Reproductive Cancer Sites
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Testes
Prostate
Tests?
Prostate Exam
Rectal and Blood test
Hernias
Hernia = rupture of
weakened body wall,
usually in abdominal area;
intestines can protrude
through it
Inguinal Hernia
Usually requires surgical repair
Male Human vs. Pig Anatomy
• Main difference is penis
• Human hangs between legs
• Pig/Quadrapeds – curves upward just
under abdominal skin to exit through
urogenital orifice just inferior to umbilicus
Male Pig Anatomy