Question

 

1.) What effect would increasing sympathetic input to the pen*s have on a man's ability to get an erection? Select one:

a. It would decrease blood flow to the pen*s, making it more difficult to get an erection.

b. It would increase blood flow to the pen*s, making it easier to get an erection.

c. It would have relatively little effect on a man's ability to get an erection.

2.) What does estradiol do during sexual differentiation? Select one:

a. It inhibits development of the Wolffian ducts

b. It doesn’t play a role in the development of gonads or genitalia

c. It stimulates development of the Mullerian ducts

d. It stimulates development of the clitor1s in female embryos

3.) What does estradiol do during sexual differentiation? Select one:

a. It inhibits development of the Wolffian ducts

b. It doesn’t play a role in the development of gonads or genitalia

c. It stimulates development of the Mullerian ducts

d. It stimulates development of the ovaries

e. It stimulates development of the clitor1s in female embryos

4.) Which portion of the autonomic nervous system must be most active in the genitals for vaginal lubrication to occur? Select one:

a. Parasympathetic

b. Sympathetic

c. Somatic

Answer 1

Answer-

According to the given question-

Question 1-

Pen*s is under control of both sympathetic nervous system (T11-L2) and parasympathetic nervous system (S2-S4). Input from parasympathetic nervous system helps in erection while input from sympathetic nervous system inhibits the erection and appear as flaccid. When cavernosal smooth muscle relax under the influence of parasympathetic nervous system then the flow of blood to pen*s increases and leads to erection. But due to action of sympathetic nervous system cavernosal smooth muscle contracted and make pen*s flaccid.

So correct answer is (A) It would decrease blood flow to the pen*s, making it more difficult to get an erection.

Question 2-

Female have ovary which are responsible for secreting estrogen or estradiol and they do not secrete testosterone which is also called antiMullerian hormone, due to which growth and differentiation of wolffian ducts into male genital tract does not occur and suppression of Mullerian duct also not occur. Mullerian ducts developed into fallopian tube, uterus, as well as one third part of v*gina. But external genital such as clitoris, labia minora, labia majora and lowe part of v*gina are not needed any hormone for their development.

So correct answer is (C) It stimulates development of the Mullerian ducts.

Question 3- estradiol secreted from ovary and helps in development of female sexual characteristic.

So correct answer is (C) It stimulates development of the Mullerian ducts.

Question 4-

Parasympathetic nervous system plays an important role during both male and female sexual organs. V*ginal lubrication is due to influence of Parasympathetic nervous system.

So correct answer is (a) Parasympathetic