Section 1
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cutaneous sensory area
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Last updated
6 years ago
Date created
Mar 1, 2020
Cards (56)
Section 1
(50 cards)
cutaneous sensory area
superior aspect of parietal lobe
visual area
inferior, occipital
resting potential
-polarized (ions in opposite places-negative on inside and positive on outside) -threshold of excitatory
primary motor area
sends impulses to skeletal muscles
CSF function
provides watery cushion to protect the brain
midbrain
composed of nerve fiber tracts -reflex centers for vision and hearing -cerebral aqueduct: 3rd-4th ventricles
layers of the cerebrum
gray matter: outer layer; composed of neuron cell bodies white matter: fiber tracts inside gray matter(corpus callosum connects hemispheres)
arachnoid layer
middle layer, web-like
occitpital lobe association areas
visual: emotions, feelings, memoresi
somatic NS divisions
sympathetic (arousal) and parasympathetic (calming)
PET scan
how much glucose(or a chemical) the brain is using and where it goes -brain functions (by warm colors) EX: deals with depression RISKY!!
MRI
detailed image -creates brain slices (many images)
blood brain barrier
includes the least permeable capillaries of the body -excludes many potentially harmful substances -useless against fats and fat soluble molecules, respiratory gases, alcohol, nicotine, and anesthesia
parietal lobe associated areas
speech language/vocab
EEG
brain waves through their electrical output
Cerbrospinal Fluid (CSF)
similar to blood plasma composition -formed by the choroid plexus -forms a water cushion to protect the brain -circulated in arachnoid space, ventricles, and central canal of the spinal cord
somatic NS
controls voluntary movements of skeletal muscles
brocas area
speak/language
thalamus
surrounds 3rd ventricle relay station for sensory impulses transfers impulses to the correct part of the cortex for localization and interpretation
phrenology
by Franz Gall-- study of bumps on the brain= FAILURE
areas of cerebrum
somatic sensory area, primary motor area, brocas area
action potential
-depolarized -cell fires
temporal lob associated areas
music: emotions, feelings, memories
sensory area for taste
center sulci
protection of CNS in order
(outer) scalp and skin, vertebral column, meninges, CSF, and blood brain barrier (inner)
dura mater
double layered external covering -folds inward -periosteum: attached to surface of skull -meningeal layer: outer covering of brain
somatic sensory area
recieves impulses from the body's sensory receptors
primary motor areas
skeletal muscles (frontal lobe)
epithalamus
forms the roof of the 3rd ventricle -houses the pineal body (endocrine gland) -includes the choroid plexus-forms CSF
Hypothalamus
under thalamus -important ANS center: regulates body temp and metabolism, controls water balance -important part of limbic system (emotions) -pituitary gland is attached to hypothalamus
Diencephalon
on top of brain stem; enclosed by cerebral hemispheres made up of thalamus, hypothalamus, and epithalamus
pons
the bulging center part for brain stem -composed of fiber tracts -includes nuclei involved in breathing
pia mater
inner layer, clings to brain surface
frontal lobe association aresas
made decisions plan problem solving
cerebrum
left and right hemispheres more than half of brain mass ridges (gyri) and sulci (grooves)
hypothalamus functions
regulates body temp and metabolism controls water balance
sensory are for smell
deep isolated gray matter
brain stem
-attaches to the spinal cord -parts include: midbrain, pons, medulla oblongata
autonomic NS
controls self-regulated action of internal organs and glands
divisions of the peripheral NS
autonomic and somatic
medulla oblongata
lowest part of brain stem -merges into spinal cord -includes fiber tracts -heart rate control, blood pressure regulation, breathing, swallowing, and vomitting
medulla oblongata functions
heart rate control blood pressure regulation breathing swallowing vomiting
meninges
dura mater, arachnoid mater, pia mater
surface lobes of cerebrum
frontal lobe, parietal lobe, occipital lobe, temporal lobe
regions of the brain
cerebral hemispheres diencephalon, brain stem, cerebellum
CT scan
3-D x-ray --helps to locate tumors
fMRI
functional magnetic resonance imaging -PET and MRI combo -brain function (red color)
frontal eye field
eye movement
cerebellum
provides involuntary coordination of body movements
auditory area
temporal (lateral)
Section 2
(6 cards)