Question

1. Which of the following is essential for male sexual behavior in both rats and monkeys?

a. The vomeronasal organ

b. The main olfactory bulbs

c. The amygdala

d. The medial preoptic area

e. All of the above

2. In a sex test with a male and female rhesus monkey, which of the following would be the best measure of the female’s attractivity?

-The male mounting the female

- T estosterone concentrations in the male’s blood

-The female approaching the male

- The female performing lordosis

- Estrogen concentrations in the female’s blood

Answer 1

Male sexual behavior in both rats and monkey requires the action of other sensory organs that involves following:

1. The Vomeronasal organ also known as Jacobson’s organ that specializes in chemoreception of moisture borne odour particles. This is present in nasal chamber and found in amphibians, reptiles and mammals. This organ sends chemical messages during sexual activity.

2. Main olfactory bulb is connected to amygdala and plays role in sexual arousal activity by sending odour information to amygdala and higher brain areas.

3. Amygdala is a subcortical brain structure and play role in both fear and pleasure emotions.

4. Medial pre-optic area also known as anterior hypothalamus is involved in the motivation of masculine behavior among males during sexual activity.

Thus the male sexual behavior in both rats and monkeys require all of the above for sexual activity.

2. In a sex test with a male and female rhesus monkey Female approaching a male is the best measure of the female attractivity. During follicular phase of their ovarian cycles the females approach towards males and spent most of their times in their vicinity than during their luteal phases of the cycle.