1. in testing for clarity of focus while viewing an object (visual acuity), one of the things a technician measures is the sensitivity of
a. cones in dim light conditions
b. rods in bright light conditions
c. cones in bright light conditions
d. rods in dim low light conditions
2. the nerve pathway of the impulses in a reflex arc response is
a. sensory neuron -- sensory receptor -- interneuron -- motor neuron
b. sensory receptor -- interneuron -- motor neuron -- sensory neuron
c. sensory receptor -- sensory neuron -- motor neuron
d. motor neuron -- interneuron -- sensory neuron -- sensory receptor
3. both giantism and dwarfism are disorders caused by malfunction of
a. thyroid
b. pituitary
c. adrenals
d. gonads
4. which of the following statements about hormones is accurate?
a. hormones are produced by the central nervous system and stored in exocrine glands.
b. hormones are transported from endocrine glands by the circulatory system.
c. hormones cause an instantaneous stimulating effect.
d. hormones stimulate only one target organ or group of cells.
5. in response to low blood pressure, the kidney produces substance M, which in turn causes the adrenal cortex to produce substance N. the presence of substance N results in the reabsorption of substance Q and water into the blood. the reaborption of water compensates for the low blood pressure. substance Q is most likely
a. sodium ions
b. ADH
c. aldosterone
d. adrenalin
6. a higher than normal thyroxine level in blood inhibits secretion of some substances from the gland labelled
a. pituitary
b. adrenal
c. pancreas
d. ovaries\testicles
7. a target organ for aldosterone is the structure labelled
a. pancreas
b. kidney
c. ovaries
d. testicles
8. in an emergency situation, which physiological response in humans likely would occur becasue of the release of adrenaline?
a. increase in blood flow to digestive organs
b. constriction of lung air passages
c. decrease in arterial blood pressure
d. dilation of pupils
9. which structures are involved in negative feedback control of adrenaline (epinephrine) secretion?
a. hypothalamus, medulla oblongata, and adrenal gland
b. pituitary gland, thyroid gland, and medulla oblongata
c. hypothalamus, pituitary gland, adrenal gland
d. pituitary gland, thyroid gland, and adrenal gland
NUMERICAL RESPONSE
glands
1. pituitary, 2. thyroid, 3. pancreas, 4. adrenals, 5. ovaries, 6. testes
Hormones
1. ACTH, 2. ADH, 3. cortisol, 4. epinephrine, 5. FSH, 6. insulin, 7. testosterone, 8. thyroxine, 9. TSH
The ________secretes__________, which stimulates the ________ to produce __________.
(gland) (hormone) (gland) (hormone)
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