Relfexes

Question 1

reflex

Answer 1

automatic response to stimulus that occurs without conscious thought to maintain homeostasis

Question 2

autonomic reflexes responsible for

Answer 2

maintaining BP, blood Co2, water intake

Question 3

somatic reflexes responsible for

Answer 3

removes body from painful stim or keeps body from suddenly falling

Question 4

reflex arc

Answer 4

basic functional unit of nervous system that is capable of receiving stimuli and producing a response

Question 5

monosynaptic reflexes

Answer 5

simplest pathways without interneurons involved

Question 6

polysynaptic reflexes

Answer 6

interneurons between sensory and motor neurons

Question 7

stretch reflex

Answer 7

simplest reflex; monosynaptic
muscle contraction in response to stretch of that muscle

Question 8

sensory receptor of stretch

Answer 8

muscle spindle

Question 9

motor neurons of stretch

Answer 9

Alpha motor neuron–causes contraction
Gamma motor neuron–maintains tension and sensitivity by also causing contraction

Question 10

golgi tendon reflex

Answer 10

prevents contracting muscles from applying excessive tension to tendons

Question 11

golgi tendon organs

Answer 11

encapsulated nerve endings with numerous branches with swollen ends adjacent to bundles of collagen fibers of tendon near muscle
receptor of golgi tendon reflex

Question 12

golgi tendon reflex produces

Answer 12

spontaneous relaxation of muscles
ie when weight lifter suddenly drops weight

Question 13

sensory neurons of GTO stimulate

Answer 13

interneurons to release inhibitory neurotransmitters to AMN and cause muscle releaxtion

Question 14

withdrawal reflex

Answer 14

remove limb or body part from painful stimulus usually with flexor muscles

Question 15

reciprocal innervation

Answer 15

enforces withdrawal reflex by relaxing extensor muscle of reflex
also involved with stretch by making opposing muscle relax while one stretches

Question 16

cross extensor reflex

Answer 16

associated with withdrawal reflex
withdrawal of one limb causes extension of another
ie if lift foot up bc stepped on nail; other foot will extend, take weight and prevent fall