Chapter 12: Spinal Reflexes

Question 1

Reflex

Answer 1

an automatic reaction to a stimulus without a thought. Stereotypical and atuomatic

Question 2

reflex arc

Answer 2

sensrot receptor-> sensory neuron -> interneuron -> motor neuron -> effector organ

Question 3

stretch reflex

Answer 3

muscles contract in response to a stretching force applied to them (knee jerk reflex)

Question 4

golgi tendon reflex

Answer 4

almost opposite of stretch reflex. it prevents contracting muscles from applying excessive tension to tendons

Question 5

golgi tendon organ

Answer 5

encapsulated nerve endings that have at their ends numerous terminal branches with small swellings associated with bundles of collagen fibers in tendon.

Question 6

withdrawal reflex

Answer 6

function is to move body limb or other part away from a painful stimulus

Question 7

reciprocal innervation

Answer 7

causes relaxation of extensor muscle when flexor muscle contracts