Unit 1 of Final

Question 1

Efferent

Answer 1

motor communication (Brain to body)

Question 2

Afferent

Answer 2

sensory communication (Body to brain)

Question 3

What is the point called where fibers cross?
Where does it occur?

Answer 3

Decussation

Medulla oblongata

Question 4

Commissural fibers
(Important connecting fibers)

Answer 4

fibers that are between the hemisphere
ex: corpus callosum

Question 5

Projection fibers
(Important connecting fibers)

Answer 5

relay sensory and motor information between the cortex and lower levels of CNS and PNS

Question 6

Association fibers
(Important connecting fibers)

Answer 6

bidirectional channels for communication among areas within each hemisphere

Question 7

What is coup and counter-coup?

Answer 7

coup- coup is the primary impact (When the brain is first hit)
counter-coup- secondary impact (the rebound injury from when the brain bounces from the coup)

Question 8

Unipolar (Sensory)

Answer 8

a sensory neuron with one process that connects with sensory surfaces

Question 9

Multipolar (Motor)

Answer 9

a neuron that is for motor control and interneurons that are between motor and sensory neurons.

Question 10

Bipolar neuron

Answer 10

neurons with two processes are often involved with sensory signal transmission

Question 11

Axaxonic

Answer 11

neurons with no axons that don’t generate action potentials.