Histo 1

Question 1

Multipolar (Structure)

Answer 1

This is either a motor (efferent) or interneuron.

Question 2

Unipolar (structure)

Answer 2

Sensory or afferent – only somatic (skin, muscles) information

Question 3

Bipolar (structure, rare):

Answer 3

sensory or afferent – only special sensation. Smell, taste, vision, hearing, equilibrium. Only found in the head.

Question 4

Astrocytes

Answer 4

Neuroglia - most common. Connect via gap junctions, work to support, help in BBB, major role is to control ionic environment around neurons. Regulate K concentrations

Question 5

CNS White Matter

Answer 5

composed of primarily myelinated axons and some neuroglia; white due to myelin.

Question 6

Gray Matter

Answer 6

composed of neuronal cell bodies, dendrites, unmyelinated axons, axon terminals, and neuroglia; gray due to Nissl bodies and lack of myelin.