Chapter 3 Flashcards
The CNS is composed of the _____ and _____.
spinal cord
brain
The brain is composed of the _____, _____, and _____.
cerebellum
brain stem
cerebrum
The brain stem is composed of the _____, _____, and _____.
midbrain
pons
medulla
The cerebrum is composed of the _____ and _____.
diencephalon
cerebral hemisphere
The diencephalon is composed of the _____ and _____.
thalamus
hypothalamus
The cerebral hemisphere is composed of the _____, _____, _____, and _____.
hippocampus
amygdala
basal ganglia
cortex
The basal ganglia is composed of the _____ and _____.
caudate nucleus
lenticular nucleus
The cortex is composed of the _____, _____, _____, _____, and _____ lobes.
frontal parietal occipital temporal limbic
_____ is responsible for expanding the surface area of the brain.
Gyrification
The brain has approximately _____ of surface area.
2.5 ft^2
_____ of the brain’s surface area is hidden in sulci.
2/3
Interneurons only participate as a _____.
relay
Motor circuits consist of _____ and _____.
primary afferents
lower motor neurons
Voluntary movements require use of the _____.
corticospinal tract
