Chapter 12- Reflexes

Question 1

Reflex arc

Answer 1

Route of a single reflex, 5 steps:

Stimulus, activation of sensory neuron, info processing in CNS, motor neuron, response of peripheral effector.

Question 2

Innate reflexes

Answer 2

Results from connections formed between neurons during development. Withdrawal from pain, chewing, ect.

Question 3

Acquired reflexes

Answer 3

Conditioned reflexes that become rapid and automatic. Enhanced by repetition.

Question 4

Somatic reflexes

Answer 4

Involuntary control of the skeletal muscles.

Question 5

Visceral or autonomic reflexes

Answer 5

Control or adjust the activities of smooth muscle, cardiac muscle, glands, and adipose tissue.

Question 6

Classification of neural reflexes

Answer 6

(1) their development, (2) nature of resulting motor response, (3) complexity of the neural circuit involved, or (4) site of information processing.

Ex. Polysynaptic, somatic, spinal reflex

Question 7

Reciprocal inhibition

Answer 7

When a specific muscle contracts, opposing muscles must relax to permit the movement.

Question 8

Ipsilateral reflex arcs

Answer 8

Same side reflexes that occur in stretch and withdrawal reflexes.

Question 9

Crossed extensor reflexes

Answer 9

Contra lateral reflex arc.

Question 10

Reflexes

Answer 10

Rapid, automatic responses to specific stimuli. Preserves homeostasis.