Test 1 Ch. 4 Neuromotor basis for motor control

Question 1

neuromotor system

Answer 1

components of the CNS and PNS involved in the control of coordinated movement

Question 2

Neuron

Answer 2

nerve cell

- basic component of nervous system

Question 3

dendrites

Answer 3

extensions from the neurons cell body

• receive info from other neurons
• neuron could have none or as many as thousands of dendrites

Question 4

axon

Answer 4

extensions form neurons cell body

• send out info to other neurons
• neuron has only one axon

Question 5

Motor Neuron

Answer 5

(Efferent neuron)

- nerve cells that send neural impulses FROM the CNS to the skeletal muscle fibers

Question 6

sensory neurons

Answer 6

(Afferent neurons)

- nerve cells that send neural impulses to the CNS

Question 7

Interneuron

Answer 7

• connects the axons descending from brain

- and sensory nerves ascending to the brain

Question 8

Central Nervous System

Answer 8

2 components

• brain
• spinal cord

Question 9

Cerebrum

Answer 9

located in forebrain, has 2 halves (right and left cerebral hemispheres)

• learning how to receive information
• perception
• interpret
• movement

Question 10

Cerebellum

Answer 10

(brian structure) located behind the cerebral hemispheres and attached to the brain stem

• motor control center of brain
• key role in the execution of smooth and accurate movements

Question 11

association areas

Answer 11

connects info form the several different sensory cortex areas

• allow interaction b/t perception and higher order cognitive function
• ex. selecting the correct response in choice reaction time situations

Question 12

Motor Unit

Answer 12

the alpha motor neuron and all the muscle fibers it innervates
- serves as the functional unit of motor control for the innervation of muscles involved in a movement