Question

Please Answer All 4 parts:

1.) Which of the following statements about cancers is FALSE? Select one:

a. African-Americans have higher rates of prostate and early breast cancer.

b. Most lumps detected in breasts are not cancerous.

c. Testicular cancer has a high survival rate if detected early before it spreads.

2.) How do orgasm and ejaculation differ from one another? Select one:

a. Orgasms are dependent on changes in the activity of neurons in the brain's cortex, while ejaculation is dependent on changes in the activity of neurons in the spinal cord.

b. Orgasms are a purely psychological phenomenon and are not associated with any changes in physiological or neural activity while ejaculation is associated with muscular contractions in the pelvis.

c. They differ from one another in that only men can ejaculate while both men and women can experience orgasms.

d. Two of the above are correct

3.) Which of the following can cause hypoactive sexual desire disorder? Select one:

a. An increase in factors that make sex undesirable.

b. A, B and C all contribute to hypoactive sexual desire disorder.

c. Two of the above

d. A lack of interest in sex that doesn't cause a person any distress.

e. A decrease in factors that make sex desirable.

4.) Match each phase of sex anatomical development with the primary inducer of differentiation and organizational effects at that stage:

(Word Bank)

-estrogen

-DHT

-Terstorsone and MIH

-SRY

hypothalamus (gonadostat): __________.
external genitalia: ____________.
internal genitalia: ___________.
gonads: ____________.

Answer 1

1) Europeans are more susceptible to prostrate and early breast cancer than African Americans.

First statement is false and others are true

2)The activated neurons on the prefrontal cortex of brain leading orgasm.

The motor neurons involved in ejaculation are located in Onuf's nucleus in the sacral spinal cord.

Orgasm has many psychological effects but it is not pure psychological phenomenon.Orgasm is associated with the release in the brain of the neurotransmitter dopamine, which facilitates the experience of pleasure. Brain also releases the hormone oxytocin, creating the feelings of love and attachment.

So the answer is 'a'

3) Many factors that affect the sexual desire of a person including

depression, anxiety and low self-esteem.

Some medication that taking regularly can affect sexual desire.

Conflict or loss of trust in relationships can cause lowered desire for sex.

Therefore an increase in factors that make sex undesirable cause hypoactive sexual desire.

So answer is 'a'

4)The synthesis and secretion of estrogens is stimulated by follicle-stimulating hormone (FSH), which is, in turn, controlled by the hypothalamic gonadotropin releasing hormone (GnRH).

Dihydrotestosterone is differentiate in to external genitalia in males.

Testosterone in presence of MIH (Mullerian-inhibiting hormone) required to differentiate and develop female internal genitalia.

The Sry gene, located on the short branch of the Y chromosome, initiates male embryonic development in the XY sex determination system.

SRY gene on the Y chromosome causes the undifferentiated gonads to become testes.

•Hypothalamus = Estrogen

•External genitalia =DHT

•Internal genitalia =Testosterone and

MIH

•Gonads= SRY