Nervous System Flashcards
How many pairs of spinal nerves?
A. 12 pairs
B. 31 pairs
C. 8 pairs
D. 21 pairs
B. 31 pairs
- 12 pairs - CN
- 8 pairs - cervical nerves
- 21 pairs - denticulate ligaments
Functional division of the NS which controls primarily involuntary activities
Visceral/Autonomic
Functional division of the NS which controls primarily voluntary activities
Somatic
These are specialized for the reception, integration, transformation, and transmission of information in the NS
Neurons
Are short and highly branched; carry impulses TOWARD the cell body
dendrites
*dendriTes = Toward
Are usually single and long, have fewer branches and carry impulses AWAY FROM the cell body
axons
*AxOn = Away frOm
Collection of cell bodies in the PNS is called:
ganglia/ganglion
Collection of cell bodies in the CNS
nuclei
Spinal and cranial nerve ganglia are what type of neurons?
unipolar, bipolar, multipolar
unipolar
Type of neuron found in the olfactory epithelium, retina and inner ear
(unipolar, bipolar, multipolar)
bipolar
Motor cells in the anterior and lateral horns of the spinal cord, autonomic ganglion cells are:
(unipolar, bipolar, multipolar)
multipolar
Which of the following is not found in the PNS:
A. schwann cell
B. astrocytes
C. satellite cell
B. astrocytes
- cells found in the PNS = SS
- cells found in the CNS = MOAN
Which of the following CNS cells plays a role in myelin sheath formation:
A. astrocytes
B. microglia
C. schwann cell
D. oligodendrocytes
C. oligodendrocytes
Which of the following is responsible for phagocytosis of waste products of nerve tissue:
A. schwann cell
B. astrocytes
C. oligodendrocytes
D. microglia
D. microglia
Myelin sheath is formed by the ____ in PNS and ____ in the CNS
PNS = Schwann CNS = Oligodendrocytes
