Action pathway- blood brain barrier Flashcards
what is the sensory neuron
afferent neuron, affector
where is the sensory neuron located
in sense organ
what is the association neuron
connector neuron
where is the association neuron
brain or spinal cord
what is the motor neuron
efferent (effectors)
where are motor neurons
in muscles or glands
where does the message go after the sensory neuron
association neuron
where does the message go after the association neuron
motor neuron
what is the order in which the message goes
sensory neuron, association neuron, motor neuron
function of motor neuron
carry out action
what is a reflex action
involuntary, rapid, reaction for survival, no brain involvement
what is included in the CNS
includes brain and spinal cord
CNS nickname
command center
function of CNS
interpret incoming information and issue instructions
how much does the brain weigh
3 lbs
where is the cerebrum located
top
how many hemispheres are in the cerebrum
2
what are the grooves in the cerebrum called
sulci
what are the ridges in the cerebrum called
gyri
what does the cerebrum control
conscious thought, learning, emotional response, higher intellectual reasoning
is the cerebrum voluntary or involuntary
voluntary
where is the broncas area located
cerebrum
broncas area
cerebrum, controls speech, stroke- lack of h2o
what causes a stroke
lack of o2
corpus callosum
connects right a left hemisphere (cerebrum)
what shape is the corpus callosum
horseshoe
what type of matter does the cerebrum contain
white matter
parkinsons disease
tremors, problems wit muscular movement, lack of dopamine (neurotransmitters)
cause of parkinsons
lack of dopamine
Thalmus nickname
relay station
function of thalmus
prevent overload
what does the thalmus control
crude recognition of whether a sensation is pleasant or not
function of hypothalmus
controls body temperature, h2o balance, metabolism, EMOTIONS, DRIVES
what does the hypothalmus influence
pituitary gland and pineal gland
what gland use to be #1 before the hypothalmus
pituitary
where is the hypothalmus located
under thalmus
what does the limbic system control
thirst, appetite, pain, pleasure center
where is the lymnoc system located
hypothalmus
mamilary bodies and location
involved in smell (hypothalmus)
mammary glands and location
breast tissue, milk (hypothalmus)
medulla oblongata location
part of the brain stem that connects with the spinal cord (very back of the head, occipital)
what does the medulla oblongata control
blood pressure, breathing, swallowing, vomiting (viral processes)
is the medulla oblongata involuntary or voluntary
involuntary
what does the cerebellum control
balance and equilibrium, body movement
what does the cerebellum control
cauliflower
is the cerebellum voluntary or involuntary
involutary
cerebral palsy
at birth, baby has no O2. physically handicap, skeletal muscles effected, spastic jerking movement (cerebellum)
what are meninges
covering over the brain tissue and spinal cord
meningitis
infection of the meninges
contagious flue like symptoms
is meningitis contagious
yes
what type of symptoms occurs with meningitis
flue like
encephalitis
brain swelling, H2O on the brain- hydrocephalus. cause by germs and fluid
cause of encephalitis
h2o on the brain and germ caused
hydrocephalus
H2O on the brain (bad)
cerebrospinal fluid
fluid in brain and spinal cord (good) cushion
function of cerebrospinal fluid
protection
cerebrospinal fluid abbreviation
CSF
what is the blood brain barrier composed of
capillaries
function of blood brain barrier
prevents certain substances from entering brain tissue (not drugs)
what things enter past the blood brain barrier
glucose, essential, amino acid, h2o cross barrier
