reflexes

Question 1

what is a reflex

Answer 1

unconscious control of muscle and gland activity triggered by a sudden or high level of sensory stimulation

Question 2

2 types of reflexes

Answer 2

1. somatic reflex

2. autonomic reflex

Question 3

somatic reflex alters what activity

Answer 3

alters skeletal muscle activity

Question 4

autonomic reflex alters the activity of what 3 things

Answer 4

1. smooth muscle activity
2. cardiac muscle activity
3. gland activity

Question 5

somatic reflex: stretch reflex

1. triggered by what
2. triggers what 2 things
3. two functions

Answer 5

1. triggered by sudden stretch of skeletal muscle
2. triggers contraction of the stretched muscle and relaxation of the antagonist
3. protect skeletal muscles from tearing due to overstretching and protects joints from sprains

Question 6

stretch receptors

1. aka
2. what embedded where that give rise to sensation of what

Answer 6

1. aka muscle spindles

2. proprioceptors embedded in all skeletal muscles that give rise to sensation of skeletal muscle length

Question 7

somatic reflex: cross extensor reflex

1. triggered by what
2. triggers what

Answer 7

1. triggered by pain in a limb

2. triggers the limb in pain to withdraw while the opposite limb extends

Question 8

5 components of a reflex arc

Answer 8

1. sensory receptor
2. sensory neuron
3. integration center (interneuron in spinal cord)
4. motor neuron
5. effector