SPLH 620 EXAM 1 (KU)
QUESTIONSAND ANSWERS 100%
CORRECT
Question : what is the nervous system?
Correct answer: it is a system containing a network of
neurons and it controls body functions
Question : what is the CNS?
Correct answer: central nervous system - made up of brain
and spinal cord,
Question : what is the PNS?
Correct answer: peripheral nervous system -
Question : sagittal plane
Correct answer: divides brain into right and left
Question : coronal plane (frontal)
Correct answer: divides brain into anterior and posterior
Question : axial (transverse)
Correct answer: divides brain into upper and lower
Question : what are the 2 basic cell types in the CNS?
Correct answer: neurons (information carriers) and glia
(support cells)
Question : what do neuroglia do in general?
Correct answer: provide physical support, nutrient flow, and
nerve "housekeeping"
Question : what are the 3 primary types of neuroglia and what
part of the NS are they in?
Correct answer: astrocytes (CNS), oligodendroglia (CNS),
and Schwann cells (PNS)
Question : what do astrocytes do?
Correct answer: - clean up local debris, including dead
neurons
provide nutrients
regulate chemical composition of extra cellular fluid
Question : what do oligodendroglia do?
Correct answer: - provide support for axons
produce myelin sheath
Question : what is the makeup of myelin?
Correct answer: 80% lipid and 20% protein
Question : what are the nodes of ranvier?
Correct answer: gaps in the myelin sheath
Question : what do microglia do?
Correct answer: - smallest glial cells
protects brain from invading microorganisms
Question : what do Schwann cells do?
Correct answer: - support cells
produce myelin
each cell provides myelin for one neuron
Question : what is a neuron?
Correct answer: - nerve cell
it is the information processing and transmitting element in the nervous system
100 to 1000 billion in our nervous system
Question : what are the 3 main parts of a typical neuron and
what are their functions?