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
