NEUROLOGIC SYSTEM, MUSCULOSKELETAL AND
ENDOCRINE QUESTIONS WITH DETAILED VERIFIED AND
100% ACCURATE ANSWERS
Peripheral Nevous System (PNS) Correct Answers 12 pairs of cranial
nerves and 31 spinal nerves
PNS Correct Answers somatic nervous system and autonomic nervous
system
afferent nerves Correct Answers Also called sensory nerves; nerves that
carry impulses from cells, tissue, and organs back to CNS via sensory
receptors.
efferent nerves Correct Answers Also called motor nerves; nerves that
carry information out of the CNS to other areas of the body (cells,
tissues, and organs).
Neuron Correct Answers a nerve cell; the basic building block of the
nervous system
-uses glucose as fuel source
Parts of a neuron Correct Answers cell body, dendrites, axon
CNS cell bodies Correct Answers -where most cell bodies are found
-grouped together are called nuclei
,ganglia or plexus Correct Answers -cell bodies groups in PNS
Dendrites Correct Answers Branchlike parts of a neuron that are
specialized to receive information and direct it to the cell body.
The Axon Correct Answers the extension of a neuron, conducts
impulses to other neurons or to muscles or glands
Myelin Sheath Correct Answers -lipid material that covers axons
-pillow cases on axon
-divided down the axon by nodes of Ranvier
Nodes of Ranvier Correct Answers Gaps in the myelin sheath to which
voltage-gated sodium channels are confined.
-where nutrient exchange occurs
Myelin Sheath Correct Answers how impulses flow between nodes of
Ranvier
salutatory conduction Correct Answers the propagation of action
potentials along myelinated axons from one node of Ranvier to the next
node, increasing the conduction velocity of action potentials.
, associational neurons Correct Answers also called interneurons, largest
in number, located in CNS
-transmit impulses from neuron to neuron
Cranial nerve I Correct Answers Olfactory (smell)
Cranial nerve II Correct Answers Optic - vision
Cranial nerve III Correct Answers Oculomotor (motor)
Cranial nerve IV Correct Answers Trochlear (motor)
Cranial Nerve V Correct Answers trigeminal nerve
Cranial nerve VI Correct Answers Abducens (motor)
Cranial Nerve VII Correct Answers Facial - controls most facial
expressions & secretion of tears & saliva & taste
Cranial Nerve VIII Correct Answers Vestibulocochlear (hearing and
balance)
Cranial Nerve IX Correct Answers Glossopharyngeal - taste & senses
carotid blood pressure