Chapter 2

Question 0

Bipolar neuron

Answer 0

One axon and one dendrite

Question 1

Multipolar Neuron

Answer 1

One axon and many dendrites.

Question 2

Unipolar neuron

Answer 2

A neuron with one axon attached to it’s soma. The axon divides with one branch receiving sensory signals and the other sending info to the CNS

Question 3

Axoplasmic transport

Answer 3

An active process by which substances are propelled along the microtubules.

Question 4

Astrocyte

Answer 4

A glial cell that provides support for the neuron.
Provides nutrients and other substances.
Regulates the chemical composition of the extracellular fluid.

Question 5

Oligodendrocyte

Answer 5

Glial cell in the CNS that forms myelin sheaths

Question 6

Microglia

Answer 6

Smallest glial cell

Protects the brain from invading microorganisms

Question 7

Blood brain barrier

Answer 7

A semipermeable barrier between the blood and the brain produced by cells in the walls of the brain’s capillaries

Question 8

Area Postrema

Answer 8

A region of the medulla where the blood-brain barrier is weak.
Poisons are detected and can initiate vomiting.

Question 9

Sodium-potassium transported

Answer 9

A protein found in the membrane of all cells that extrudes sodium ions from and transports potassium ions into the cell.

Question 10

Saltatory conduction

Answer 10

Conduction of action potentials by myelinated axons.

Jumps from nodes of Ranvier.

Question 11

Acetylcholine

Answer 11

A neurotransmitter found in the brain, spinal chord, and parts of the PNS
Muscle contraction