Chapter 11: The Nervous System Flashcards
1
Q
cerebellum
A
- inferior to occipital lobes
- dorsal to pons & medulla
- two hemispheres separated by flax cerebelli
- vermis connects hemispheres
- cerebellar cortex (gray matter)
- arbor vitae (white matter)
- cerebellar peduncles
- dentate nucleus (largest)
- integrates sensory info concerning position of body parts
- coordinates skeletal muscle activity
- maintains posture
2
Q
cerebellar cortex
A
gray matter in cerebellum
3
Q
arbor vitae
A
white matter in cerebellum
4
Q
vermis
A
connects cerebellum hemispheres
5
Q
fall cerebelli
A
separates hemispheres of cerebellum
6
Q
brain waves
A
recordings of fluctuating electrical charges in brain; EEG, via electrodes on scalp that detect electrical changes in extracellular fluid of brain
7
Q
4 types of brain waves
A
- alpha
- beta
- theta
- delta
8
Q
alpha
A
awake, resting, eyes closed
9
Q
beta
A
active mental activity, under tension
10
Q
theta
A
mostly in children
11
Q
delta
A
mainly during sleep
12
Q
apnea
A
no breathing, airway constricts
13
Q
spinal cord
A
- slender column of nervous tissue
- begins at foramen magnum & terminates at the L1 - L2 space
- consists of 31 segments; each gives rise to a pair of spinal nerves
14
Q
spinal cord portions (5)
A
- cervical enlargement
- lumbar enlargement
- conus medullaris
- filum terminale
- cauda equina
15
Q
conus medullaris
A
tapered end of spinal cord, between L1 & L2`