Braaaaains Flashcards
highest functions: memory, reasoning, sensation, voluntary mvmt
cerebral cortex
-automatic movements - swinging arms while you walk
basal ganglia
sensory impulses, relays to cerebral cortex
thalamus
- maintains homeostasis (temp, heart rate, BP), endocrine, emotions (anger, sex drive)
- hormones secreted here act directly on pituitary gland
hypothalamus
nerve fibers & tracts connecting brain & spinal cord
One part acts on BP & respiratory
midbrain, pons, medulla
- coordination of voluntary movements
- tests: rapid hand movement, coordination
Cerebellum
highway for ascending/descending tracts between brain & spinal nerves; mediates reflexes
Spinal cord
personality, behavior, emotion, intellectual functions
Frontal lobe
sensation from skin & tongue
parietal
vision reception
occipital
hearing, taste, smell
temporal
motor, speech
broca’s
speech & comprehension
wernicke’s
from sensory receptors TO CNS
afferent
from CNS to msks, organs, glands
efferent
skeletal msks (voluntary)
somatic
smooth msks (involuntary) → homeostasis, heart, glands
autonomic
sympathetic
fight or flight → heart rate slows then increases, BP & pupil size DILATES
parasympathetic
rest & digest → gastric secretions, slows heart rate, CONSTRICTS pupils
autonomic nervous system reacts to event, causing bradycardia (slow down) AND allows vasodilation in the lower extremity vessels & causes blood to flow down resulting in fainting
vasovagal
- expressive
- understands what you’re saying
- words are slow and laborious but meaningful
- person is frustrated
- posterior inferior frontal lobe
broca’s
- receptive
- no comprehension
- words are fluent but nonsensical
- no idea that what they’re saying is nonsense
- posterior superior temporal lobe
wernicke’s
+ romberg = indicates
loss of balance. → MS or drunk
+ pronator drift
arm drifts downward, either palm pronates, or arms unable to find original point: somatic cerebral disease
Ptn w/ flaccid msk tone may have what disease processes?
polio
guillian-barre
Ptn w/ spastic msk tone may have what?
cerebral palsy
spinal cord injury