Psy 356 Ch. 9 Quiz

Which items are incorrectly paired?

Bulimia nervosa; significant weight loss

_______ involves periodic binge eating followed by _______ or taking laxatives to avoid weight gain.

Bulimia; vomiting

Long-term energy storage is accomplished by storage of fat in _______ tissue

adipose

The hormone _______ acts to conserve sodium by acting on the _______.

aldosterone; kidneys

_______ refers to the active process of maintaining a relatively stable internal environment.

Homeostasis

Suppose that your car battery dies, and you find yourself stranded in a winter storm. Which response would not be considered a behavioral mechanism for regulating body temperature while you are waiting for help to arrive

Lowering your breathing rate

Which example demonstrates ectothermic behavior? a. A person shivering in a cold house b. A dog panting on a hot day c. A turtle basking on a sunny log d. A group of birds roosting together at night

A turtle basking on a sunny log

What is the significance of a set zone, as opposed to a precise set point, in terms of thermoregulation

The wide variety of conditions that animals face makes a tolerance, or set zone, instead of a precise set point, more adaptable

Which statement about leptin is false? a. It stimulates POMC neurons. b. It decreases feeding behavior. c. It is believed to exert short-term control over appetite. d. It inhibits NPY neurons

It is believed to exert short-term control over appetite.

An excess of glucose in urine is symptomatic of

diabetes mellitus.

It is thought that each individual's _______ is in two-way communication with the brain via chemical signals and the _______.

enterotype; vagus nerve

Thermoregulation is considered a negative feedback system because

restoring the desired temperature turns off the response.

In rats, lesions of the ventromedial hypothalamus (VMH) lead to all of the following except a. defense of a new target weight. b. initial weight gain. c. self-maintenance of normal weight. d. a voracious appetite.

self-maintenance of normal weight.

Two physiological responses to hypovolemia are _______ of blood vessels and the secretion of _______ by the posterior pituitary.

constriction; vasopressin

The body stores glucose for later use after first converting it to a more complex form called

glycogen

One of the reasons we know that insulin is not the only cue for satiety is that

high doses of insulin initiate eating.

Physiological saline is also sometimes described as

isotonic

The response to increase in the salt concentration of the extracellular solution is called _______ thirst.

osmotic

Research on the effects of leptin indicates that activation of POMC neurons in the hypothalamus

suppresses hunger

When an animal loses a lot of blood, there is a tendency of baroreceptors to signal

thirst

The saltiness of fluid in the stomach and intestine is monitored by neurons in the gut, and this information is communicated to the brain via the

vagus nerve

Which intervention or research findings has not been an effective weight loss strategy?

Drugs that block the visual appeal of food

High circulating levels of leptin activate the _______ satiety neurons and simultaneously inhibit the _______ hunger neurons.

POMC; NPY

Which statement correctly describes osmotic pressure? a. The tendency of a solvent to move across a membrane in order to equalize the concentration of solute on both sides of the membrane b. The tendency of a solvent to sink due to higher density c. The force of solute against a cell membrane d. The spontaneous spread of solute molecules through a solvent

The tendency of a solvent to move across a membrane in order to equalize the concentration of solute on both sides of the membrane