Lecture 14- somatic control

Question 1

reflexes

Answer 1

organised neural circuit
usually organised within the spinal cord
predictable, reproducible automatic response

Question 2

examples of reflexes

Answer 2

stretch reflex

withdrawal reflex

Question 3

stretch reflex

Answer 3

1. muscle spindle stretch receptor
2. sensory neuron via dorsal route ganglion
3. monosynapse in gray matter in spinal cord
4. motor neuron to same muscle

Question 4

withdrawal reflex

Answer 4

withdraw from stimulus (ipsilateral)

stabilize other side (contralateral)

Question 5

prefrontal cortex

Answer 5

higher goals planning goals behavior emotional behavior

Question 6

premotor cortex

Answer 6

motor program

Question 7

primary motor cortex

Answer 7

activation of specific motor units

Question 8

Corticospinal pathway (pyramidal tract)

Answer 8

2 neurons
upper motor neuron-lower motor neuron
controls precise movement of hands and feet

Question 9

Basal nuclei

Answer 9

permission to act confirmation allow
modify movement using loop system
help select an appropriate movement for situation

Question 10

cerebellum

Answer 10

coordinates movements
guided by sensory inputs
compares intention with result feedback
maintenance of posture

Question 11

procedural memory

Answer 11

development of automatic movements