Reflexes and the reflex arc

Question 1

rapid, automatic responses to stimuli designed to protect the body and maintain homeostasis

Answer 1

reflexes

Question 2

involve contraction of skeletal muscles

Answer 2

somatic reflexes

Question 3

regulate smooth muscle, cardiac muscle and endocrine glands

Answer 3

autonomic reflexes

Question 4

reflexes can be either one of which two types

Answer 4

somatic or autonomic

Question 5

basic structure of all reflexes, originates from a sensory receptor that detects a change

Answer 5

reflex arc

Question 6

the sensory receptor sends an action potential (nerve impulse) along what and to the gray matter of the spinal cord or brainstem

Answer 6

sensory neuron

Question 7

sensory neurons synapses with this, which serves to integrate the incoming sensory impulse with other impulses from other sensory neurons

Answer 7

interneurons

Question 8

the integrated response of the reflex is sent out from the spinal cord or brainstem by what

Answer 8

motor neurons

Question 9

with this neuron the reflex arc ends in contractions or inhibition of skeletal muscle

Answer 9

somatic neuron

Question 10

with this neuron the reflex arc ends in smooth muscle within an organ or blood vessel, cardiac muscle or endocrine gland

Answer 10

autonomic neuron

Question 11

this reflex is considered a simple, monosynaptic (two neuron) reflex arc because it involves only a sensory neuron and a motor neuron (with only one synapse between them) without any interneurons

Answer 11

stretch reflex

Question 12

a neuron that transmits impulses between other neurons

Answer 12

interneuron

Question 13

kneecap reflex checked by doctor

Answer 13

stretch reflex

Question 14

this reflex is due to a strong stimulus to a receptor that causes the sensory somatic neuron to send impulses to the spinal cord

involves synapses with several interneurons that will cause a contraction of a specific set of muscles responsible for pulling the limb away from the painful stimulus

aka flexor reflex

Answer 14

withdrawal reflex

Question 15

in this reflex, the afferent sensory impulse crosses to the other side of the spinal cord and stimulates the muscles that extend the opposite limb

Answer 15

crossed extensor reflex

Question 16

reflexes that start on one side and travel to the opposite side of the body

Answer 16

contralateral reflexes

Question 17

reflexes that have the stimulus and response on the same side of the body

Answer 17

ipsilateral reflexes

Question 18

the upper CNS normally produces a dampening or inhibitory effect on what

Answer 18

reflex arcs

Question 19

muscles contract with more force and produce more limb movement than normal

Answer 19

hyperreflexive

Question 20

the reflex will be less than normal or absent all together

Answer 20

hypreflexive

Question 21

a light tap on the medial canthus of the eye should produce a blink of the eyelids

Answer 21

palpebral reflex

Question 22

shining a light in one eye and the iris in both eyes constrict, does not assess vision

Answer 22

PLR (pupillary light response)