Brain Anatomy
CNS
PNS
Neurons
Miscellaneous
100
What is the second largest part of the brain called, responsible for balance, coordinated movement and posture?
The cerebellum
100
What 2 structures make up the CNS?
Brain and spinal cord
100
What are the 2 divisions of the PNS?
Somatic Nervous System and Autonomic Nervous System
100
What are the e main parts of a neuron?
Dendrite, cell body, and axon
100
What are the 2 main divisions of the nervous system?
Central Nervous System and Peripheral Nervous System
200
What is the cerebral cortex?
The thin layer of gray matter that forms the surface of the cerebrum
200
What is a reflex?
An involuntary response to a sensory stimulus
200
What muscle type is affected by somatic reflexes?
skeletal muscle
200
Do myelinated or unmyelinated axons conduct impulses faster?
Myelinated
200
What type of cell comprises a myelin sheath?
Schwann cell
300
Name the 4 major lobes of the cerebrum
Frontal, parietal, temporal and occipital
300
What are the 4 major divisions of the CNS?
Brain stem, cerebellum, diencephelon and cerebrum
300
What does the autonomic nervous system regulate?
The body's automatic or involuntary functions
300
What is the olfactory cranial nerve responsible for?
Sense of smell
300
What is action potential?
Nerve impulse
400
What three structures make up the brain stem?
Medulla oblongata, pons and midbrain
400
Ridges of the cerebrum are called this
Gyri
400
What is another name for parasympathetic nervous system?
Craniosacral
400
The part of the neuron that carries an impulse toward the cell body is the...
Dendrite
400
What is the name of the band that connects the right and left hemispheres of the brain?
Corpus Callosum
500
What three structures make up the diencephalon?
Hypothalamus, thalamus and pineal gland
500
What are the three meningeal layers? Which is the thin, innermost layer?
Dura mater, arachnoid mater and pia mater The pia mater is the thin, innermost layer
500
Which of the 2 types of autonomic responses kicks in during a stressful event?
Sympathetic response
500
What is another name for motor neuron? In which direction do they move?
-Efferent neuron -Away from the brain
500
How many pairs of cranial nerves are there? How many pairs of spinal nerves?
12 cranial 31 spinal
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