Lab 12: Development

Question 1

What are the aspects of the spermatozoa?

Answer 1

Acrosome (head), nucleus (at base of head), midpiece, and flagella

Question 2

What occurs to the secondary oocyte after fertilization?

Answer 2

Morula (more than 2 bumps), blastocyst (many bumps),

Question 3

What are the aspects of the gastrula stage?

Answer 3

Embryonic disc, primitive streak, ectoderm, mesoderm, endoderm

Question 4

After the gastrula stage what structures appear?

Answer 4

Umbilical cord, U. arteries (blue- away from baby), U. veins (red), chorion, chorionic villi, yolk sac, amnion,

Question 5

What are the structures outside of the amnion?

Answer 5

Placenta then uterus,
Inferior: Cervix, mucus plug, vagina

Question 6

What occurred to the rat injected with testosterone?

Answer 6

Increase body mass, decrease testicular and pituitary mass.

Question 7

What occurred to the rate injected with Luteinizing hormone?

Answer 7

Increase body and testicular mas, decreased pituitary mass .