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60 Cards in this Set

  • Front
  • Back
How much does the brain weigh?
3 lbs
cerebrum
responsible for high level, complex functioning; interprets sensory input, transmits messages to control parts
what are the 4 lobes of the 2 hemispheres of the cerebrum?
frontal lobe
parietal lobe
temporal lobe
occipital lobe
frontal lobe
responsible for intellect, personality behavior, primary motor areas
parietal lobe
responsible for sensory interpretation, spacial perception
temporal lobe
hearing, taste, smell, memory
occipital lobe
visual center
brainstem
controls basic survival functions. all ascending, descending fibers pass thru here.
what are the parts of the brainstem?
midbrain
pons
medulla
midbrain/pons
both have modulating affect on impulses which pass through
pons
has ctr which increases heart rate and produces vasoconstriction
pons serves as communicating point with
cerebellum
medulla
contains centers for control of blood pressure and rate of respirations and heart.
medulla contains the reflex centers for -
cough, sneeze, swallow
medulla is where most _______ pathways cross
descending.
basal ganglia
motor relay control center
thalamus
major relay station for sensory impulses.
which area of the brain gives conscious recognition to crude sensation?
thalamus
hypothalamus
located just below thalamus and in front of midbrain.
which area links nervous system to endocrine system?
hypothalamus
which body functions does the hypothalamus control?
reproduction, appetite, water balance, autonomic nervous system.
RAS stands for ...
reticular activating system
RAS defined
nonspecific sensory transmission system between the medulla and cerebral cortex;
Which area is responsible for arousal (wakeful) state
RAS
The RAS is stimulated by
sensory input from body
motor activity of body
retrograde stimuli from cerebrum.
limbic system
located beside hypothalamus near the inner surface of the cerebrum.
which system is responsible for emotional behavior and drive?
limbic system
cerebellum
coordinates muscle activity
maintains equilibrium; balance; maintains muscle tone and posture.
which area functions below the level of consciousness?
cerebellum
which area is important in memory for motor skills like playing the piano and connects with the pons.
cerebellum
spinal cord
from medulla to about L1 or L2; contains ascending (sensory) tracts and descending (motor) tracts.
what covers the brain and spinal cord?
meninges
what are the 3 layers of the meninges?
dura mater, arachnoid, pia mater.
how much spinal fluid do the 4 ventricles and spinal canal contain?
135 ml
how much spinal fluid is produced daily?
600 ml
What is the purpose of the spinal fluid?
to cushion and carry nutrients, but no blood.
CSF is circulating in which space>
subarachnoid
What is the blood supply of the brain?
receives 20% of CO or about 800-1000 ml/min
where does the blood supply to the brain come from?
internal carotid
vertebral
Circle of Willis
internal carotid
from common carotid branches and supplies cerebrum
vertebral
from subclavian artery; join to form the Basilar artery and supply cerebellum and brain stem.
Circle of Willis
junction for the 2 internal carotids and basilar artery and provides a safety valve - collateral circulation.
What are the structures of the peripheral nervous system
spinal nerves - 31 pairs
cranial nerves - 12 pairs
What does the Autonomic nervous system control?
involuntary functions of the body
sympathetic vs. parasympathetic
sympathetic: fight or flight; norepinephrine; adrenergic.
parasympathetic: conserve energy-day to day; acetylcholine; cholinergic.
How much does the brain weigh?
3 lbs
cerebrum
responsible for high level, complex functioning; interprets sensory input, transmits messages to control parts
what are the 4 lobes of the 2 hemispheres of the cerebrum?
frontal lobe
parietal lobe
temporal lobe
occipital lobe
frontal lobe
responsible for intellect, personality behavior, primary motor areas
parietal lobe
responsible for sensory interpretation, spacial perception
temporal lobe
hearing, taste, smell, memory
occipital lobe
visual center
brainstem
controls basic survival functions. all ascending, descending fibers pass thru here.
what are the parts of the brainstem?
midbrain
pons
medulla
midbrain/pons
both have modulating affect on impulses which pass through
pons
has ctr which increases heart rate and produces vasoconstriction
pons serves as communicating point with
cerebellum
medulla
contains centers for control of blood pressure and rate of respirations and heart.
medulla contains the reflex centers for -
cough, sneeze, swallow
medulla is where most _______ pathways cross
descending.