Physiology UPDATED ACTUAL Exam
Questions and CORRECT Answers
Sensory - CORRECT ANSWER - Function of the nervous system. Senses changes within
or outside the body and sends that info to the spinal chord and brain.
Integrate - CORRECT ANSWER - Function of the nervous system. Brain and spinal cord
receive, analyze, store, and integrate the info to produce a response.
Motor - CORRECT ANSWER - Function of the nervous system. An instruction of the
body to do something.
Neuron - CORRECT ANSWER - The basic functional unit of nervous system. High
requirement for oxygen. Cannot reproduce but can regenerate if the cell body remains intact.
Neuroglia - CORRECT ANSWER - Also known as glial cells. Provide
structural/functional support and protection to neurons.
Soma - CORRECT ANSWER - Central body cell of the neuron
Dendrites - CORRECT ANSWER - Neuron cell processes that receive stimuli/impulses
and transmit information toward the soma. Short and branched.
Axons - CORRECT ANSWER - Neuron cell processes that conduct nerve impulses away
from the soma toward an other neuron or an effector cell. A long, single process.
Myelin - CORRECT ANSWER - Cell membrane of glial cells tightly wrapped around the
axon.
, Oligodendrocytes - CORRECT ANSWER - Glial cells of the brain and spinal chord
Schwann cells - CORRECT ANSWER - Glial cells of the peripheral nerves
Faster - CORRECT ANSWER - Myelinated axons conduct impulses __________ than
unmyelinated ones
White Matter - CORRECT ANSWER - Nervous tissue containing myelinated axons
Nodes of Ranvier - CORRECT ANSWER - Gaps in the myelin sheath between adjacent
glial cells
Speed of Conduction - CORRECT ANSWER - Myelin sheath and nodes of Ranvier work
together to enhance the ____________ ___ ______________ of nerve impulses along the axon.
CNS - CORRECT ANSWER - Central Nervous System. Consists of the Brain and Spinal
Cord
PNS - CORRECT ANSWER - Peripheral nervous system. Consists of the Nerves
extending outward from the central axis to the periphery of the body.
Cranial Nerves - CORRECT ANSWER - Nerves that originate directly from the brain
Spinal nerves - CORRECT ANSWER - Nerves that emerge from the spinal cord
Afferent nerves - CORRECT ANSWER - Conduct impulses toward the CNS. Also known
as sensory nerves, they conduct sensation from sensory receptors in the skin and other locations
to the CNS.