Question 1

What measurable differences are apparently related to homosexual versus heterosexual orientation in adult men?

Accepted Answer

A)  their testosterone levels 
B)  their estrogen levels 
C)  the size of certain parts of their hypothalamus 
D)  the pattern of dendritic branching in their cerebral cortex 
A)  their testosterone levels 
B)  their estrogen levels 
C)  the size of certain parts of their hypothalamus 
D)  the pattern of dendritic branching in their cerebral cortex

Question 2

The difference in the size of the INAH3 in homosexual and heterosexual men is mainly because of a difference in the number of neurons.

Accepted Answer

A) True 
 B)False

Question 3

LeVay's studies indicate a correlation between a man's sexual orientation (homosexuality vs. heterosexuality) and the:

Accepted Answer

A)  amount of testosterone in the blood. 
B)  amount of estradiol in the blood. 
C)  size of one nucleus of the hypothalamus. 
D)  size of one nucleus of the medulla. 
A)  amount of testosterone in the blood. 
B)  amount of estradiol in the blood. 
C)  size of one nucleus of the hypothalamus. 
D)  size of one nucleus of the medulla.

Question 4

Androgen insensitivity syndrome leads to a genetic male with a female external appearance of the genitals.

Accepted Answer

A) True 
 B)False

Question 5

In castrated male rats, the medial preoptic area:

Accepted Answer

A)  does not have as much dopamine as other rats. 
B)  has normal levels of dopamine released in the presence of a receptive female. 
C)  has as much dopamine as normal rats, but the presence of a receptive female does not evoke much release of it. 
D)  releases the same level of dopamine, but not testosterone, as a normal rat. 
A)  does not have as much dopamine as other rats. 
B)  has normal levels of dopamine released in the presence of a receptive female. 
C)  has as much dopamine as normal rats, but the presence of a receptive female does not evoke much release of it. 
D)  releases the same level of dopamine, but not testosterone, as a normal rat.

Question 6

What causes the primitive gonads to develop into masculine structures?

Accepted Answer

A)  the X chromosome 
B)  the sex region Y (SRY) gene 
C)  the sexually dimorphic nucleus 
D)  Müllerian inhibiting hormone 
A)  the X chromosome 
B)  the sex region Y (SRY) gene 
C)  the sexually dimorphic nucleus 
D)  Müllerian inhibiting hormone

Question 7

Decreases in ____ levels generally decrease male sexual activity.

Accepted Answer

A)  estrogen 
B)  oxytocin 
C)  testosterone 
D)  estradiol 
A)  estrogen 
B)  oxytocin 
C)  testosterone 
D)  estradiol

Question 8

Both sexual arousal and orgasm depend on the release of which neurotransmitter from the medial preoptic area neurons?

Accepted Answer

A)  GABA 
B)  Serotonin 
C)  Acetylcholine 
D)  Dopamine 
A)  GABA 
B)  Serotonin 
C)  Acetylcholine 
D)  Dopamine

Question 9

Exposure of a female rat to highly stressful experiences late in pregnancy has what effect on the development of her male offspring?

Accepted Answer

A)  They develop a female anatomy, although their behavior is the same as other males. 
B)  They respond sexually to male partners, although their anatomy is the same as other males. 
C)  Their sexual anatomy and behavior are typically male, but their nonsexual behaviors resemble females. 
D)  They resemble females in all regards, including anatomy, sexual and nonsexual behaviors. 
A)  They develop a female anatomy, although their behavior is the same as other males. 
B)  They respond sexually to male partners, although their anatomy is the same as other males. 
C)  Their sexual anatomy and behavior are typically male, but their nonsexual behaviors resemble females. 
D)  They resemble females in all regards, including anatomy, sexual and nonsexual behaviors.

Question 10

People typically experience a state of complete relaxation shortly after orgasm; this occurs due to the release of:

Accepted Answer

A)  testosterone. 
B)  oxytocin. 
C)  prolactin. 
D)  progesterone. 
A)  testosterone. 
B)  oxytocin. 
C)  prolactin. 
D)  progesterone.

Question 11

There are obvious differences in external anatomy of homosexual humans compared to heterosexual humans.

Accepted Answer

A) True 
 B)False

Question 12

Drugs that reduce testosterone levels in males will most likely reduce their sexual behavior.

Accepted Answer

A) True 
 B)False

Question 13

Someone with testicular feminization:

Accepted Answer

A)  does not produce enough testosterone. 
B)  produces too much estrogen. 
C)  has cells which are insensitive to androgens. 
D)  looks like a male but is infertile. 
A)  does not produce enough testosterone. 
B)  produces too much estrogen. 
C)  has cells which are insensitive to androgens. 
D)  looks like a male but is infertile.

Question 14

Genes on the ____ produce(s) sex differences in addition to those that we can trace to androgens and estrogens.

Accepted Answer

A)  Y chromosome 
B)  X chromosome 
C)  hormones 
D)  X and Y chromosomes 
A)  Y chromosome 
B)  X chromosome 
C)  hormones 
D)  X and Y chromosomes

Question 15

During the early sensitive period, immature mammals have a protein called ____, which is not present in adults.

Accepted Answer

A)  gamma-fetoprotein 
B)  delta-fetoprotein 
C)  beta-fetoprotein 
D)  alpha-fetoprotein 
A)  gamma-fetoprotein 
B)  delta-fetoprotein 
C)  beta-fetoprotein 
D)  alpha-fetoprotein

Question 16

The overall mechanism of early sexual differentiation has been described by saying that nature's "default setting" is to make every mammal:

Accepted Answer

A)  male. 
B)  female. 
C)  intermediate between male and female. 
D)  fully both male and female. 
A)  male. 
B)  female. 
C)  intermediate between male and female. 
D)  fully both male and female.

Question 17

Female rats find sex reinforcing only if they:

Accepted Answer

A)  are submissive 
B)  get to decide when it occurs 
C)  let the male take the lead 
D)  are placed in a controlled setting 
A)  are submissive 
B)  get to decide when it occurs 
C)  let the male take the lead 
D)  are placed in a controlled setting

Question 18

Sex differences are to ____ as gender differences are to ____.

Accepted Answer

A)  anatomy; behaviors 
B)  adults; children 
C)  excitation; inhibition 
D)  scientists; the public 
A)  anatomy; behaviors 
B)  adults; children 
C)  excitation; inhibition 
D)  scientists; the public

Question 19

Congenital adrenal hypertrophy is most likely to have which of these effects?

Accepted Answer

A)  Genetic male develops looking partly feminized. 
B)  Genetic male develops a homosexual orientation. 
C)  Genetic female develops looking partly masculinized. 
D)  Genetic female develops excessive appetite. 
A)  Genetic male develops looking partly feminized. 
B)  Genetic male develops a homosexual orientation. 
C)  Genetic female develops looking partly masculinized. 
D)  Genetic female develops excessive appetite.

Question 20

In humans, testosterone produces its organizing effects on the hypothalamus by itself.

Accepted Answer

A) True 
 B)False

What measurable differences are apparently related to homosexual versus heterosexual orientation in adult men?

The difference in the size of the INAH3 in homosexual and heterosexual men is mainly because of a difference in the number of neurons.

LeVay's studies indicate a correlation between a man's sexual orientation (homosexuality vs. heterosexuality) and the:

Androgen insensitivity syndrome leads to a genetic male with a female external appearance of the genitals.

In castrated male rats, the medial preoptic area:

What causes the primitive gonads to develop into masculine structures?

Decreases in ____ levels generally decrease male sexual activity.

Both sexual arousal and orgasm depend on the release of which neurotransmitter from the medial preoptic area neurons?

Exposure of a female rat to highly stressful experiences late in pregnancy has what effect on the development of her male offspring?

People typically experience a state of complete relaxation shortly after orgasm; this occurs due to the release of:

There are obvious differences in external anatomy of homosexual humans compared to heterosexual humans.

Drugs that reduce testosterone levels in males will most likely reduce their sexual behavior.

Someone with testicular feminization:

Genes on the ____ produce(s) sex differences in addition to those that we can trace to androgens and estrogens.

During the early sensitive period, immature mammals have a protein called ____, which is not present in adults.

The overall mechanism of early sexual differentiation has been described by saying that nature's "default setting" is to make every mammal:

Female rats find sex reinforcing only if they:

Sex differences are to as gender differences are to .

Congenital adrenal hypertrophy is most likely to have which of these effects?

In humans, testosterone produces its organizing effects on the hypothalamus by itself.

The Major Issues

Nerve Cells and Nerve Impulses

Synapses

Anatomy of the Nervous System

Development and Plasticity of the Brain

Vision

The Other Sensory Systems

Movement

Wakefulness and Sleep

Internal Regulation

Emotional Behaviors

The Biology of Learning and Memory

Cognitive Functions

Mood Disorders and Schizophrenia

Filters

Exam 11: Reproductive Behaviors

What measurable differences are apparently related to homosexual versus heterosexual orientation in adult men?

The difference in the size of the INAH3 in homosexual and heterosexual men is mainly because of a difference in the number of neurons.

LeVay's studies indicate a correlation between a man's sexual orientation (homosexuality vs. heterosexuality) and the:

Androgen insensitivity syndrome leads to a genetic male with a female external appearance of the genitals.

In castrated male rats, the medial preoptic area:

What causes the primitive gonads to develop into masculine structures?

Decreases in ____ levels generally decrease male sexual activity.

Both sexual arousal and orgasm depend on the release of which neurotransmitter from the medial preoptic area neurons?

Exposure of a female rat to highly stressful experiences late in pregnancy has what effect on the development of her male offspring?

People typically experience a state of complete relaxation shortly after orgasm; this occurs due to the release of:

There are obvious differences in external anatomy of homosexual humans compared to heterosexual humans.

Drugs that reduce testosterone levels in males will most likely reduce their sexual behavior.

Someone with testicular feminization:

Genes on the ____ produce(s) sex differences in addition to those that we can trace to androgens and estrogens.

During the early sensitive period, immature mammals have a protein called ____, which is not present in adults.

The overall mechanism of early sexual differentiation has been described by saying that nature's "default setting" is to make every mammal:

Female rats find sex reinforcing only if they:

Sex differences are to ____ as gender differences are to ____.

Congenital adrenal hypertrophy is most likely to have which of these effects?

In humans, testosterone produces its organizing effects on the hypothalamus by itself.

The Major Issues

Nerve Cells and Nerve Impulses

Synapses

Anatomy of the Nervous System

Development and Plasticity of the Brain

Vision

The Other Sensory Systems

Movement

Wakefulness and Sleep

Internal Regulation

Emotional Behaviors

The Biology of Learning and Memory

Cognitive Functions

Mood Disorders and Schizophrenia

Filters

Sex differences are to as gender differences are to .