Chapter Two

Question 1

most typical type of neuron

Answer 1

motor neuron

Question 2

neurons that carry sensory impulse from sensory organs to CNS

Answer 2

sensory neurons

Question 3

neuron that carries motor impulses from CNS to specific effectors

Answer 3

motor neuron

Question 4

T/F: The Purkinje cell is located in the cerebrum.

Answer 4

False. Purkinje cells are located in the cerebellum.

Question 5

Dendrites look like tree branches

Answer 5

Purkinje cell

Question 6

Where are pyramidal cells primarily found?

Answer 6

motor cortex, amygdala, hippocampus

Question 7

star-shaped glia; protect synapses from outside chemicals; can synchronize messages

Answer 7

astrocytes

Question 8

tiny glia; remove virus, fungi, damaged cells

Answer 8

microglia

Question 9

creates myelin sheaths in brain/spinal cord; supplies nutrients and support to axons

Answer 9

oligodendrocyte

Question 10

creates myelin sheaths for peripheral neurons; supplies nutrients and support to axons

Answer 10

Schwann cells

Question 11

the gradient

Answer 11

polarization

Question 12

-70 mV

Answer 12

resting potential

Question 13

______ Na+ out; ____ K+ in

Answer 13

3; 2

Question 14

all-or-none law

Answer 14

almost all action potentials will be equal in amplitude and speed