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Flashcards in reflexes Deck (8)
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1
Q

what is a reflex

A

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

2
Q

2 types of reflexes

A
  1. somatic reflex

2. autonomic reflex

3
Q

somatic reflex alters what activity

A

alters skeletal muscle activity

4
Q

autonomic reflex alters the activity of what 3 things

A
  1. smooth muscle activity
  2. cardiac muscle activity
  3. gland activity
5
Q

somatic reflex: stretch reflex

  1. triggered by what
  2. triggers what 2 things
  3. two functions
A
  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
6
Q

stretch receptors

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

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

7
Q

somatic reflex: cross extensor reflex

  1. triggered by what
  2. triggers what
A
  1. triggered by pain in a limb

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

8
Q

5 components of a reflex arc

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