71 Which of the following neurotransmitters would likely cause cavernosal muscle

Question

71 Which of the following neurotransmitters would likely cause cavernosal muscles to CONTRACT?

Select one:

a. Prostaglandins

b. Norepinephrine

c. Nitric oxide

d. Vasoactive intestinal peptide (VIP)

Question 72

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72 Which of the following is a good synopsis of the assumptions underlying the theory of natural selection?

Select one:

a. Traits that decrease reproductive success tend to become more frequent in the population

b. Traits that increase reproductive success tend to become less frequent in the population

c. Traits that increase reproductive success tend to become more frequent in the population

d. There is no relationship between reproductive success and how widely represented a trait is in the population

Question 73

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73 When should males be selective, and females relatively unselective, when choosing a mate?

Select one:

a. When reproductive costs to both sexes are high

b. When reproductive costs to males are low and costs to females are high

c. When reproductive costs to both sexes are low

d. When reproductive costs to males are high and costs to females are low

Question 74

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74 Among the traits that men and women list as important in long-term partners, which of the following do men rank as among the six most important and women do not?

Select one:

a. Intelligence

b. Humor

c. Honesty

d. Good looks

Question 75

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75 Theoretically, what does facial symmetry tell you about a person?

Select one:

a. That their MHC proteins are excessively variable

b. That they have a relatively low level of homozygosity in the genes they possess

c. That they are likely to be unfaithful in a romantic relationship

d. That they are a later-born child

Explanation / Answer

71. Which of the following neurotransmitters would likely cause cavernosal muscles to CONTRACT?

Correct answer : b. Norepinephrine

Explanation: Norepinephrine contracts both the corpus cavernosum and penile vessels, mainly via stimulation of 1-adrenoceptors present in the human corpus cavernosum.

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