quiz 9

Question 1

Produces a rapid withdrawal of the body part from a painful stimulus: ipsilateral

Answer 1

Flexor

Question 2

Prevents muscle over-stretching and maintains muscle tone.

Answer 2

stretch

Question 3

Produces muscle relaxation and lengthening in response to tension: the contracting muscle relaxes as its antagonist is activated

Answer 3

Tendon

Question 4

Receptors sensitive to stimuli arising outside the body are classified as

Answer 4

extereoceptors

Question 5

a group of neuron cell bodies in the PNS is a

Answer 5

ganglion

Question 6

at which level of the somatosensory system are conscious decision made about low-grade touch stimuli?

Answer 6

perceptual level

Question 7

The length of a muslce is communicated to the brain via a

Answer 7

muscle spindle

Question 8

a physician can determine the approximate location of a psinal injury simply by testing areas of the skin for numbness. These skin areas are referred to as

Answer 8

dermatomes

Question 9

Preparing the body for the “fight-or-flight” response is the role of the

Answer 9

sympathetic nervous system

Question 10

preganglionic axons are

Answer 10

nonmyelinated

Question 11

which of the following statements is true of the parasympathetic nervous system?

Answer 11

the fibers emerge from the brain and sacral portion of the spinal cord

Question 12

regulation of heart rate at low normal levels is achieved by the

Answer 12

parasympathetic division

Question 13

which of these effectors is not directly controlled by the autonomic nervous system?

Answer 13

skeletal muscle

Question 14

Norepinephrine is secreted by_________

Answer 14

some axons of the sympathetic nervous system

Question 15

the main integration center for the ANS is the

Answer 15

hypothalamus

Question 16

once a sympathetic preganglionic axon reaches a trunk ganglion, it can do all but

Answer 16

synapse with a parasympathetic neuron in the same trunk ganglion

Question 17

the sciatic nerve is a combination of which two nerves?

Answer 17

common fibular and tibial

Question 18

nociceptors respond to what type of stimulus?

Answer 18

Pain

Question 19

through the process of __________, seemingly inboluntary activites can be voluntarily controlled.

Answer 19

biofeedback

Question 20

Which receptors are stimulated by epinephrine?

Answer 20

adrenergic

Question 21

Consists of an ipsilateral withdrawal reflex and a contralateral extensor reflex: important in maintaining balance.

Answer 21

Crossed-extensor