Human A&PBIO 304 · American River College ← Week 08 pre-work

BIO 304 · Week 08 · Interactive Workbook

Male & Female Reproduction

This one workbook covers the male reproductive lecture and the female reproductive and mammary glands lecture. Every answer can be found in those two videos. Type your answers, draw in the boxes or upload a photo of a hand drawing, then use Save as PDF to submit. Your work saves on this device as you go.

Watch first: Male Reproductive System lecture · Female Reproductive System & Mammary Glands lecture. Both videos are also on the Week 08 pre-work page.

Due Friday, July 31 by 5:00 PM. Nothing is due mid-week; work at your own pace and submit everything by Friday at 5.

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Male notes → Female notes →

Part 1 of 3 · Recall

Fill in the blanks

Type the term that completes each statement, using the word bank. Each item is marked (Male), (Female), or (Both).

Word bank

OvariesFimbriaeAmpullaProlactinOxytocinProstateEpididymisEndometriumMyometriumCorpus luteumCryptorchidismCremaster muscleSeminal vesiclesSeminiferous tubulesInterstitial (Leydig) cellsSertoli (sustentacular) cells

  1. (Male) Coiled tubes inside the testis where sperm are made
  2. (Male) Support/"nurse" cells that protect sperm and form the blood-testis barrier
  3. (Male) Cells outside the tubules that secrete testosterone
  4. (Male) Muscle that raises and lowers the testes to control temperature
  5. (Male) Coiled duct behind the testis where sperm mature and gain motility
  6. (Male) Gland that makes about 60% of semen, with fructose for energy
  7. (Male) Gland that adds milky fluid and PSA; can enlarge and squeeze the urethra
  8. (Male) The condition of an undescended testis
  9. (Female) The female gonads; almond-sized and paired
  10. (Female) Finger-like fringes that sweep the egg into the uterine tube
  11. (Female) Widest part of the uterine tube and usual site of fertilization
  12. (Female) Structure left after ovulation that makes progesterone
  13. (Female) Inner uterine lining that sheds during menstruation
  14. (Female) Thick muscular layer of the uterus with oxytocin receptors
  15. (Both) Hormone from the anterior pituitary that makes breast milk
  16. (Both) Hormone from the posterior pituitary that ejects (lets down) breast milk

Define it: high-yield vocabulary

Write a clear definition in your own words for each term.

  1. Spermatogenesis
  2. Blood-testis barrier
  3. Testosterone
  4. Inhibin
  5. Ovulation
  6. Corpus luteum
  7. Capacitation
  8. Homologous structures
  9. Prolactin
  10. Oxytocin

Part 2 of 3 · Anatomy lab

Draw and label

Box A. Male reproductive system (side view)

Directions

  1. Draw a testis inside the scrotum. Behind the testis, draw the comma-shaped epididymis.
  2. From the epididymis, draw the ductus (vas) deferens going up and looping over the bladder.
  3. Add the seminal vesicle, the prostate (under the bladder, wrapping the urethra), and the bulbourethral gland.
  4. Draw the urethra running through the penis to the outside.
  5. Label all of the above, then draw arrows tracing the path of sperm: seminiferous tubules → epididymis → ductus deferens → ejaculatory duct → urethra.
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Your uploaded drawing for Box A. Male reproductive system

Box B. Female reproductive system (front view)

Directions

  1. Draw the uterus in the center (pear shaped, upside down).
  2. On each side, draw a uterine (fallopian) tube reaching out toward an ovary, ending in the fringed fimbriae.
  3. Below the uterus, draw the cervix and the vagina.
  4. Label: ovary, uterine tube, fimbriae, ampulla, uterus, cervix, vagina.
  5. Inside the uterine wall, label the endometrium (inner lining) and the myometrium (muscle layer).
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Your uploaded drawing for Box B. Female reproductive system

Structures to label

Label each of these on your drawings.

  1. Testis
  2. Epididymis
  3. Ductus (vas) deferens
  4. Seminal vesicle
  5. Prostate
  6. Bulbourethral gland
  7. Penis / urethra
  8. Ovary
  9. Uterine (fallopian) tube
  10. Fimbriae
  11. Ampulla
  12. Uterus
  13. Endometrium
  14. Myometrium
  15. Cervix
  16. Vagina

Part 3 of 3 · Physiology

Reason it through

A. Hormones and function

Temperature control: explain what the dartos and cremaster muscles do in COLD versus WARM conditions, and why the testes sit outside the body in the scrotum.
Trace the hormone control of the testis: start at the hypothalamus (GnRH), go to the anterior pituitary (LH and FSH), name each target cell, and explain how testosterone and inhibin turn the system back down (negative feedback).
Cryptorchidism: why does an undescended testis need to be corrected, and what two risks did the lecture give for a testis that stays in the abdomen?
Breastfeeding hormones: explain the difference between prolactin and oxytocin (what each one does and where each is released from), and what triggers oxytocin release.
Follicle to corpus luteum: describe what happens to the mature (Graafian) follicle at ovulation and what it turns into afterward if there is no fertilization.

B. Homologous structures

Male and female parts that come from the same starting tissue are called homologous. Fill in the matching partner.

  1. Testes (male) are homologous to the __________ (female).
  2. Scrotum (male) is homologous to the __________ (female).
  3. Penis (male) is homologous to the __________ (female).
  4. Bulbourethral (Cowper's) glands (male) are homologous to the __________ (female).
  5. Prostate (male) is homologous to the __________ (Skene's / paraurethral glands, female).

Submit · due Friday, July 31 by 5:00 PM

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