| word(s) |
 |
|
| definition |
|
|
| cerebrum |
thinking part of brain/ has lobes |
| Blood Brain Barrier |
maintains a stable environment for brain/ prevents flux of hormones, ions and amino acids |
| meninges |
coverings of the brain |
| dura mater |
outermost meninx/ double-layered/ means tough mother |
| arachnoid mater |
never dips into sulci/ loose brain covering |
| subdural space |
narrow cavity between AM and DM |
| subarachnoid space |
space between AM and PM/ filled with CSF |
| pia mater |
gentle mother/ delicate tissue/ clings tightly to the brain |
| cerebrospinal fluid |
watery, plasmalike fluid in brain containing glucose, urea, cations and some WBCs |
| roles of CSF |
mechanical and chemical protection, circulation |
| medulla oblongata |
has a cross over of motor fibers |
| pons |
relat station for brain |
| inferior colliculi |
startle reflex (auditory) |
| superior colliculi |
visual reflex |
| cerebellum |
coordinate voluntary movements/ receives and processes inputs/ provides timing for movements |
| diencephalon |
central core of forebrain |
| thalamus |
edits and sorts information coming to cerebrum |
| hypothalamus |
main visceral control center |
| autonomic control center |
involuntary/ BP, pupil size, heart rate |
| epithalamus |
produces melatonin/ regulates sleep/wake and mood cycles |
| cerebral cortex |
another word for gray matter |
| gyri |
elevated ridges of tissue |
| sulci |
shallow groove between gyri |
| fissure |
deeper groove than gyri |
| cerebral white matter |
myelinated nerve fibers grouped into large tracts |
| association tract |
connect area within single hemi/ connect adjacent gyri and specific lobes |
| commissural tract |
corpus callosum/ connect corresponding areas of right and left hemis |
| projection tract |
ties cortex with the rest of nervous system |
| limbic system |
the "emotional brain" |
| functions of cerebral cortex |
consiousness, perception, communication, memory, appreciation, and understanding |
| sensory area |
mediate concsious awareness of sense information |
| motor area |
control voluntary movements |
| association area |
integrate information for purposeful action |
| contra-lateral |
term used when each hemisphere is concerned with sensory and motor functions of the OPPOSITE side of the body |
| lateralization |
term used when two hemispheres are not entirely equal but there is some specialization |
Ch.18 LTI-MA 509
