Psychology Chapter 8-10

At what point in the menstrual cycle, if any, are women who are not on birth-control pills most likely to initiate sexual activity?

About midway between two menstrual periods. Around time of ovulation

Research with cats indicates that messages from the pons to the spinal cord during sleep prevent us from:

Acting out our dreams

When would you be most likely to experience osmotic thirst?

After eating salty foods

Variations in insulin level alter hunger by changing the:

Availability of glucose to the cells

One function served by alpha-fetoprotein in the developing rat fetus is to:

Blind to estradiol to prevent it from entering cells

A cycle of food-deprivation followed by overeating characterizes

Bulimia

Humans and all other mammals are poikiolothermic.

False

Whether or not a person becomes obese is entirely dependent on their genetic makeup

False

Melatonin is released by the SCN

False, it's released in the pineal gland

Dreams only occur during REM sleep.

False, when people are woken up during nonREM sleep, they also sometimes report dreaming

What develops from the Müllerian ducts?

Female reproductive structures

Parts of the hypothalamus can generate a cyclic pattern of hormone release in:

Females only

The superachiasmatic nucleus is found in the

Hypothalamus

The difference between males and females in the sexually dimorphic nucleus is that it is:

Larger in males than in females

Which of the following substances is produced by fat cells?

Leptin

Which is true of androgens and estrogens

Males and females both have androgens and estrogens, but in different amounts.

What is the first point in the digestive system where enzymes begin to break down food?

Mouth

Sometimes people find themselves unable to move their postural muscles immediately after awakening. Why?

Parts of the brain is still sleep

Tasting and chewing are motivating factors in:

Satiety

sleep spindles and K complexes are most characteristics of which sleep stage?

Stage 2

Which of the following is NOT a function of sleep?

To increase body temperature

Animals produce endogenous circadian rhythms that last ____.​

True

Homeostasis refers to temperature regulation and other biological processes that keep body variables within a fixed range

True

Hormones are capable of inducing long-lasting changes throughout the body. Correct!

True

Light is the primary stimulus that resets the circadian rhythm for land animals (including humans)

True

Most mammals at about the age of weaning lose the intestinal enzyme lactase

True

Wolffian ducts are found in

female and male fetuses early in development

An organizing effect differs from an activating effect of a hormone in that an organizing effect:

produces more long-lasting effects

The hormone that prepares the uterus for pregnancy is:

progesterone

What is narcolepsy?

sudden periods of sleepiness during the day