14.6- Reflexes

Question 1

Reflexes

Answer 1

Rapid, preprogrammed, involuntary responses.

Question 2

Properties of reflexes

Answer 2

Stimulus to initiate refles
Rapid response-
Preprogrammed response
Involuntary response

Question 3

Reflex arc

Answer 3

Sensory receptor, effector, and the neural wiring between the two.

Question 4

What are the four common types of spinal reflexes?

Answer 4

Stretch reflex, Golgi tendon reflex, withdrawal reflex, and cross extensor reflex.

Question 5

Muscle spindle

Answer 5

Proprioreceptor
Made from intrafusal muscle fibers surrounded by connective tissue capsule.
These have no myofilaments.- Only have contraction on the end.

Question 6

Stretch reflex

Answer 6

Initiated by muscle spindle as a flexion response to stretch.
this is a monosynaptic response

Question 7

Golgi tendon reflex

Answer 7

this stops muscles from contracting excessively.

Question 8

Reciprocal activation

Answer 8

When sensory neurons communicate with other sensory neurons in the spinal cord that stimulates alpha motor neurons for the antagonistic muscle.
I.E. the quad is contraction too hard and so it is told to relax while the hamstring muscles are told to contract.

Question 9

Withdrawal reflex

Answer 9

Made for withdrawal from pain. Uses nociceptors.

Question 10

Nociceptors

Answer 10

Pain receptors.

Question 11

Cross-extensor reflex

Answer 11

Used in conjunction with withdrawal reflex. If a dog bites your arm you pull that arm back while thrusting the other arm out to push it away.