Brain ch 18 part 2

liveitupsunshine's version from 2017-04-14 23:49

Section 1

Question Answer
what are the pyramidsbulges on the anterior side of the medulla
knowing where you limbs are located in spaceproprioception
what neurons relay info to the cerebellum from proceptorsinferior olivary nucleus
what are the bands of white matter through which axons extend to the thalumusmedial lemniscus
what sends fine touch and proprioception info from upper body to the thalumuscunaete nucleus
what send fine touch and proprioception info from the lower body to the thalumusgracile nuclei and fasicles
what are the 2 centers of the medulla and their functions1)cardiovascular center - regulates heart rate and BV diameter 2)respoeratory center - adjusts basic breathing rythum
what cranial nerves do the medulla house (form) VIII - XII (8-12)
what cranial nerves are housed in the ponsV - VIII (5-8)
where is the cerebral aquductmidbrain
what is another name for midbrainmesencephalon
what relays info from skeletal muscles, cerebral cortex, and cerebellumpons
peduncles functionimpulse move through this to the spinal cords
what coordinates eye movementsuperior colliculi
what contriols auditory stemuli and startle reflexinferior caliculi
3 midbrain nuclei and functions`1)substantia nigra - helps with subconscious muscle activity and secrete dopamine 2)red nucleus - help control volentary movement of limbs 3)mesencephalic nucleus - convaeys propriocetive info to brainstem to control skeletal muscles of head and face
a central constricted area of the cerebelumvermis
what is the main function of the cerebellumchecks how well consciously initiated movements are carried out and to send feedback to the cotex (outside)
describe the cerebellar cortexgrey matter that foem parallel folds called folia
describe the arbor vitae (the tree of life)tracts of white matter that runs through cerebellum ( looks like coral)
describe 3 cerebellar perdunclesconducts impulses between cerebellum and other parts of brain,
what is located at the diecephalon ( above the brainstem)thalumus, hypothalumus, and epithalumus
what is the flocculonodulare lobeequalibrium and balace center

Section 2

Question Answer
function of thalumusrelays sensory info to cerebral cortex, it processes senses and sends to appropriate spot to relate to action
what sense is not evaluated by the thalumussmell
what is a interthalumus adhersion, connect right and left
describe thalumus2 oval shaped masses of grey matter inferior to corpus callosum
what is controled by the anterior nucleus of thalumusemothion, alertness, memory
what is controlled by the medial nuclei of thalumusemothions, learning, awerness, cognition
what is controlled by the lateral group od medial nucleirecieves and sends out, emotional expression, sensory info intergration
what is controled by the ventral group of medial nuclei1) lateral genticulate nucleus- visual impulse 2)medial genticulate nucleus - auditoru impulse
what is controlled by the intralaminar nucleipain perception and awakening
what are the4 regions of the hypothalumus1)mammilary region (posterior) 2)tuberal region (medium eminance & infundibulum) 3)supraoptic region (sup to optic chaism) 4) preoptic region (regulates autonomic function)
what do mammilary bodies docommunication hum, one region to another
describe tuberalcollection point of hormones
describe supraoptic regionoptic nurves cross in optic chiasm, below this region
describe peroptic regionregulates autonomic fuctions
describe infundibulumconnects hypothalumus and patuitary gland
describe median eminencesecretions collect here before being entering portal system
describe mammillary bodiesrelays info to amygdlal and hippocampus to tha;umus
function of hypothalumuscontrol autonomic system, production of hormones, regulates emotional and behavioural patterns, eating and drinking, body temp, and circadian rythms
describe epithalumuspost aspect, pineal glands and serets melitonin (circadian rythum)

Section 3

Question Answer
describe cerebrumprovides congitive functions, cerebral cortex (white matter) and folds in cortex called gryi (sing.gyrus)
what connects the right and left hemesphiers of cerebrumcorpus collosum
what is the larg crack in the sup aspect of cerebrum through right and left hemesphierlongitudinal fissure
what are the 2 sulcilateral sulcus and the central sulcus (seperates fronal and pariatal lobe)
function of precentral gyrusprimary motor area
function of postcentral gyrusprimary somatosensory cortex (sensaton of skin)
what tract corrisponds with gyri of opposite sideCOMMISSURAL TRACTS
what tract corrisponds with gyri of same sideassociation tracts
what tract corrisponds with other components of brain (not gyri)projection tracts (ie: brainstem, thalumus, and spinal cord)
what are the 3 basal ganglia (nuclei) and functionglobus pallidus, putaman, cuadate nucleus - helps initiate and terminate movement, supress unwanted movement, and regulate muscle tone
limbic system function of hippocampuslong term memory
limbic system function of amygdalaintense emotion, (ie:aggression, fear) links memory and emotion
limbic system function of olfactory bulb (cranial nerve 8)involved in olfaction (links smell to memory)
limbic system function of cingulatelinking behavioural outcome to motivations (teaching association)
limbic system function of dentate gyrusmemory formation and depression (drop in seretonin)
what is limbic system (emotional brain)governs emotional aspect of behavior; which influances memory
primary somatosensory (touch and skin) areapostcentral gyrus
primary visual (sight) areaprimary visual area of occipital lobe
primary auditory (hear) areaprimary auditory area of temperal lobe
primary gustatory (taste) areaprimary gustatory area of parietal lobe
primary olfactory (smell) areaprimary olfactory area of temporal lobe
Primary motor areaprecentral gyrus (frontal)
what is broca's speech areafrontal lobe - left hemisphere, involved in planning and production of speech
what is wernicke's areatemperal and parietal lobe-left hemisphire, recognition os spoken language (choosing the wrong words=fluenta aphasa) same comprehension confussion
function of cerebral cortex motor areas
function of cerebral cortex association areaintergration, memory, thought
function of prefrontal cortexpersonality, mood, planning for futurre, risk assesment

Section 4

Question Answer
olfactory nerve (CNI)sensory = smell
optic nerve (CNII)sensory = vision
oculomotor nerve (CNIII)motor = eye and upper eyelid movement
trochlear nerve (CNIV)motor = eye movement
trigeminal nerve (CNV) (largest)sensor/motor = pain, touch, & temp - supplies muscles for mastication
abducens nerve (CNVI)motor = eye movement / abduction
facial nerve (CNVII)sensory/motor = taste buds ant. 2/3 toungue - facial expression
vestibulocochlear nerve (CNVIII)sesory = hearing - vestibular branch = impulses for equilibrium (balance) - cochlear branch = impulses for hearing
glossopharyngeal nerve (CNIX)sesory/motor = tastebuds pot. 1/3,- release saliva
vagus nerve (CNX)sensory/motor = proprioception and stretch - swallowing and vocilization
accessory nerve (CNXI)motor = sterniocleiomastoid and trapizius muscles to coordinate head movement
hypoglossal nerve (CNXII)motor = speech and swallowing