Bio Chapter 14

Front 1

components of brainstem

Back 1

diencephalon, midbrain, ponds, medulla oblongata

Front 2

brain barrier system

Back 2

regulates what can get from bloodstream to tissue fluid of the brain, guard blood capillaries and choroid plexus

Front 3

blood CSF barrier

Back 3

protects the brain at chloroid plexus
---tight junctions b/w endothelial cells

Front 4

circumventricular organs

Back 4

places in third and fourth ventricles where barrier is absent --potential for brain invasion

Front 5

medulla oblongata

Back 5

regulates

-cardiac center
-vasomotor center
-respiratory center
-reflex center: coughing, sneezing, gagging, swallowing, vomiting....

Front 6

pons

Back 6

sensory roles include hearing, equilibrium and taste and facial sensations

motor roles include urination, eye movement, facial expression, chewing swallowing, tears

Front 7

midbrain

Back 7

contains cerebral aqueduct, contains two CNs of eye movement: trochlear and occulomotor, related to cerebral peduncles

Front 8

reticular formation

Back 8

loosely organized web of gray matter that runs vertically through all levels of the brain stem, deals w/....

1. somatic motor control/muscle tone
2. cardiovascular control
3. pain modulation
4. habituation
5. sleep and consciousness

Front 9

vermis

Back 9

connects right and left hemispheres of cerebellum

Front 10

thalamus

Back 10

ovoid mass on each side of brain perched at the superior end of the brainstem beneath the cerebral hemispheres

-"gateway to cerebral cortex"
-key role in motor control-circuits b/w thalamus, cerebellum, and cerebral cortex and basal nuclei
-involved w/ limbic system
-

Front 11

hypothalamus

Back 11

beneath thalamus, around 3rd ventricle

"Pituitary Master"
1. hormone secretion
2. hunger and thirst
3. sleep and wake rhythym
4. autonomic effects - ANS
5. thermoregulation
6. memory
7. emotional behavior

Front 12

circadian rhythyms

Back 12

sleep cycles

Front 13

parietal lobe association area

Back 13

where we percieve stimuli

Front 14

temporal lobe association area

Back 14

where we identify said stimuli

Front 15

frontal lobe association area

Back 15

where we plan our response to that stimuli

Front 16

prefrontal cortex

Back 16

seat of judgement, intense and control over expression of emotions

Front 17

hypothalamus and amygdala

Back 17

where feelings actually COME FROM

Front 18

amygdala

Back 18

recieves input from sensory systems and has two outputs

1. hypothalamus: somatic and visceral motor effects of emotion -->heart beating fast, nausea
2. Prefrontal cortex - expression of emotions