Neuron Types

Question 1

Multipolar

Answer 1

Always motor neurons
Control skeletal muscle are multipolar

Question 2

Bipolar

Answer 2

found in retina, inner ear & olfactory

Question 3

Unipolar

Answer 3

are always sensory neurons

Question 4

Astrocytes (CNS)

Answer 4

Form blood-brain barrier by covering blood capillaries

Question 5

Oligodendrocytes (CNS)

Answer 5

Each forms myelin sheath around more than one axon in CNS
Analogous to Schwann cells of PNS

Question 6

Microglia (CNS)

Answer 6

Small cells found near blood vessels
Phagocytic role - clear away dead cells

Question 7

Ependymal (CNS)

Answer 7

Form epithelial membrane lining cerebral cavities (ventricles) & central canal of the spinal cord
Produce cerebrospinal fluid (CSF)

Question 8

Satellite Cell (PNS)

Answer 8

Flat cells surrounding neuronal cell bodies in peripheral ganglia
Support neurons in the PNS

Question 9

Schwann Cells (PNS)

Answer 9

Cells encircling PNS axons
Each cell produces part of the myelin sheath surrounding an axon in the PNS