Physiological Psych. Module 9.2 Quiz
Approximately what percent of the mammalian body is composed of water?
70%
What area of the brain is largely responsible for detecting osmotic pressure?
OVLT and subfornical organ
Hypovolemia induces thirst by the production of which hormone?
angiotensin II
Like vasopressin, ____ constricts the blood vessels, compensating for the drop in blood pressure.
angiotensin II
Hypovolemic thirst ____.
can be satisfied better by salt water than by pure water
The hormone aldosterone results in the ____.
conservation of sodium
Vasopressin raises blood pressure by ____.
constricting the blood vessels
What effect does the hormone angiotensin II have?
constriction of blood vessels
The lateral preoptic area and surrounding parts of the hypothalamus control ____.
drinking
After a lesion to the lateral preoptic area, a rat would react to an increase in sodium levels by ____.
drinking less and excreting highly concentrated urine
Eating salty potato chips increases the concentration of sodium in the ____.
extracellular fluid
Sodium-specific hunger is closely associated with ____.
hypovolemic thirst
Your posterior pituitary is most likely to release antidiuretic hormone (ADH) ____.
if you are very thirsty
Vasopressin and angiotensin II are similar in that they both promote ____.
increased blood pressure
What causes hypovolemic thirst?
low blood volume
What kind of thirst is produced by an increased concentration of solutes in the blood?
osmotic
The tendency of water to flow across a semipermeable membrane from the area of low solute concentration to the area of higher concentration is termed ____.
osmotic pressure
A combination of the hormones aldosterone and angiotensin II leads to an increase in preference for ____ tastes.
salty
Diabetes insipidus literally means "passing without taste" because the urine is produced in such large quantities that it is tasteless. This disease is most likely caused by a problem with the production or release of ____.
vasopressin
Which hormone, released by the posterior pituitary, both raises blood pressure and enables the kidneys to reabsorb water?
vasopressin
