Getting Pregnant

Question 1

What happens to the spermatozoa in the tail of the epididymis?

Answer 1

They are capable of movement and have the potential to fertilise

Question 2

Name 3 functions of the seminal plasma

Answer 2

Transport medium, nutrition and buffering capacity

Question 3

What are the properties of the substance produced by the seminal vesicles?

Answer 3

alkaline fluid containing fructose, prostaglandins and clotting factors

Question 4

Name the 4 phases of human sexual response

Answer 4

Excitement phase, Plateau phase, orgasm phase and resolution phase

Question 5

What is the somatic and autonomic efferent that cause erection?

Answer 5

Pudendal nerve and pelvic nerve

Question 6

What function does NO serve?

Answer 6

Causes vasodilation to get an erection

Question 7

How does viagra work?

Answer 7

Slows the rate that cGMP is degraded so vasodilation lasts longer

Question 8

What is capacitation?

Answer 8

maturation of sperm in the female reproductive tract

Question 9

How long does a spermatozoa survive for in the female?

Answer 9

48-72 hrs

Question 10

How long does an oocyte live for?

Answer 10

6-24 hrs

Question 11

What is the purpose of the acrosome on a sperm?

Answer 11

Contains enzymes to breakdown the zona pellucida. (sperm binds to ZP3 glycoprotein of ZP)

Question 12

What prevents multiple sperm fertilising an oocyte?

Answer 12

Cotical reaction (series of calcium waves)

Question 13

What is the cell type in a morula?

Answer 13

Totipotent stem cells