Question

Riley has a 37-day menstrual cycle. She most likely ovulated on what day of her cycle?

	(a) day 19
	(b) day 17
	(c) day 18
	(d) day 25
	(e) day 23

Which of the following is the correct path taken by spermatozoa as they move from the testis to the epididymis?

a)	seminiferous tubule → rete testis → straight tubule → efferent ductule → caput

b)	seminiferous tubule → straight tubule → testis → efferent ductule → caput epididymis

c)	seminiferous tubule → rete testis → sertoli cells → straight tubule → efferent ductule - caput epididymis

d)	seminiferous tubule → efferent ductule → rete testis → straight tubule → caput epididymis

The amount of plasma that filters into the nephrons is approximately _____________ of the total volume.

	a)    4/5
	b)    1/5
	c)    3/4
	d)    1/2
	e)    90%

Answer 1

1. Answer:-(e) day 23

Explanation:- ovulation occurs about 14 days before the next menstrual cycle starts. If the average menstrual cycle is of 28 days , ovulation occurs around day 14. If the cycle is of 37 days, ovulation occurs around (37-14=23) day 23.

2. Answer:- (b)seminiferous tubule--->straight tubule--->

Rete testis---> efferent ductule--->caput epididymis

Explanation:-

3. Answer:-(b)1/5

Explanation:- normal renal plasma flow is 625ml/min, 20% (1/5th) of which yields normal GFR of 125ml/min that get filtered to form filterate. The filterate then goes into tubules.