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49 Cards in this Set

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Medulla Oblangata
enlarged extension of spinal cord, main reflex center, cardiovascular center-- controls heartbeat respirations bld vessel diameter
Pons
helps medulla directly superior to medulla
Midbrain
visual/ auditory area superior part of brainstem
Diencephalon
part of brain with Hypothalamus and thalamus
Hypothalamus
heartbeat, bllod vessels, reg. of sleep cycles, appetite control, emotions, center for autonomic nervous system inferior, involuntary
thalamus
superior, only afferent neurons, sends sensory images to brain, relays impulses from sense organs to cerebrum
cerebrum
main part of brain, largest, gyri, sulci and fissures, consciousness, thinking, memory, sensations, vision, hearing. emotions, willed movement, normal speech, right and left hemisphere
corpus callosum
connects right and left hemispheres
gyri
ridges
sulci fissures
grooves
primary motor area
initiates volutanry action of muscles
Broca's area
allows one to say words
Auditory association area
perceive sound
Wernicke's area
allows you to translate thought to word
Cerebellum
production of smooth coordinated movements, maintains posture, maintains equilibrium
Cerebrovascular Accident (CVA)
Stroke, destruction of neurons of motor area of cerebrum, due to hemorrhage or cessation of blood flow, poor oxygen supply, leads to hemiplegia
Cerebral Palsy
childhood, permanent, but nonprogressive damage to motor control, spastic contractions
spastic contractions
involutary contractions
paraplegia, hemiplegia, triplegia, quadriplegia
both legs, one side of body, both legs and on arm, all limbs.
Dementia
memory loss, loss of attention span, loss of intellect, personality changes, loss of motor control
Alzheimer Disease
plaques and tangles in brain tissue, interrupt transmissio at synapses
Seizure disorders
sudden bursts of neuron activity, mild= consciousness, motor conrtol sensory perception, server= jerky involuntary muscle contractions or unconsciuosness
epilepsy
recurring seizures, due to tumors trauma chemical imbalances, treated with drugs that block neurotransmitters
Cauda equina
fan of spinal nerves at end of spinal cord
White matter
surrounds grey matter, masses of mylenated axons
gray matter
butterfly shaped dendrites/cell bodies of axons in teh white matter
Meninge
membrane surounding spinal cord
pia mater
inermost membrane covers spinal cord
dura mater
outermost membrane attaches to inside of vertebrae
arachnoid
traps cerebrospinal fluid b/w it and the pia mater
ventricle
spaces deep within brain,
lateral, third, fourth ventricle
wierd curve shaped ventricle, under lateral ventricle, venttricle at bottom
cerebral aqueduct
connects 3rd and 4th ventricle
Cerebrospinal fluid
fluid that is filtered out of blood that circulates throughout spinal cord and brain
Choroid plexus
capiliaries that filter cerebrospinal fluid out of blood
Spinal nerves
31 pairs of these
cervical pairs, thoracic, lumbar sacrospinal coccygeal
8,12,5,5,1
dermatones
areas supplied by a single spinal nerve
neuritis
inflammation of nerve
neuralgia
nerve pain
Sciatica
inflammation of sciatic nerve in thigh
Bell's Palsy
compression/ degeneration of facial nerve, paralysis of facial features
Shingles
viral infections, virus travel sover sensory nerve to skin of single dermatone, results in swollen red vesivles that rupture, preceeded by burning and itching
Autonomic nervous system
efferent nerves that regulate incoluntary functions, miantains homeostasis, heart, bld vessels, hollow internal organs
sympathetic nervous system
emergency system, during strees, strenuous exercise, strong emotions, fight or flight
Parasympathetic Nervous system
in control of normal everyday conditions
hypertension/ heart disease
high blood pressure, weakens heart and bld vessels, stress induced
ulcers
stress ionduceddue to changes in digestive secretion
Neuroblastoma
tumor of sympathtic nervous system exaggereated sympathetic effects increased heart rate sweating high bld pressure