BIOL 223 - Exam 4

____ pairs of cranial nerves originate from the brain, and _____ pairs of spinal nerves originate from the spinal cord.

• 2; 12

• 8; 24

• 12; 31

• 15; 36

The part of the efferent division of the nervous system that transmits impulse form the CNS to smooth muscle, cardiac muscle, and glands is the

• somatic motor nervous system

• somatic sensory division

• visceral sensory division

• autonomic nervous system

Collections of neuron cell bodies outside the CNS are called

• ganglia

• nerves

• nuclei

• nerve tracts

The major site for processing information and integrating mental processes is the

• ANS (parasympathetic division)

• ANS (sympathetic division)

• CNS

• PNS

In a neuron, the nucleus and Nissl bodies are located in the

• axon

• dendrites

• neuron cell body

• collateral axons

Axons end by branching to form small extensions with enlarged ends. The enlarged ends are called

• dendrites

• presynaptic terminal

• postsynaptic membranes

• axon hillocks

Neuroglia cells with cytoplasmic extensions that form sheaths around axons in the CNS are called

• astrocytes

• ependymal cells

• microglia

• oligodendrocytes

Which of these cell types produce and help circulate cerebrospinal fluid?

• astrocyte

• microglia

• ependymal cells

• oligodendrocytes

The axons that make up the white matter of the CNS form

• endoneurium

• epineurium

• nerve fascicles

• nerve tracts

The outer layer of gray matter of the brain is called the

• cortex

• ganglia

• fascicle

• nuclei