Create an account
Cerebellum vital to the control of rapid muscular activities.
ex: speaking, running, typing, dancing.
*does not initiate the movement
Each hemisphere divided in 3 lobes:
Flocculonodular- consists of NODULUs and paired FLOCCULI
Both Direct and Indirect projections that ggo to spinals cord, cerebral cortex, and basal ganglia
(Essential for learning skilled movements)
-Connects the Diencephalon to the Spinal Cord
- Control all brain ouptput; cardiac , respiratory,sensorimotor
Midbrain, Pons, Medulla Oblongata
SUPERIOR Structure from Dorsal view
- the CORPORA QUADRIGEMINA(superior &inferior colliculi)
- the floors of the 4TH ventricle
-and 3 cerebellar penducles.
Brainstem: INTERNALLY consists of ...
Cranial Nerve nuclei,
longitudinal fiber tracts, and the
Modify, facilitate, and regulate all coritcal functions
Regulate swallowing; CN 5,7,9,10,12
actions such as awaking/sleeping cycle
RF involved with...
Cortical arousal, pain perception, regulate toncil modulation and act of spinal and cranial motor functions.
- Link between the cerebral hemispheres and the peripheral and cranial sensory input systems.
-Contains all incoming sensory & outgoing motor fiber + important reticular and cranial nerve nuclei
-Generate neurotransmitters vital to regualte telencephalic, diencephalic, brainstem and spinal cord functions
Corpora Quadrigemina; 4 rounded elevations (tectum)
-2 Superior Colliculi= reflex control of eye movement, visual reflez and coordination of vestibular generated head & eye move(reflex eye control) searching, tracking
- 2 Inferior Colliculi= Mediate the transmission of auditory impluses from the ear to the thalamus and auditory cortex.
- (auditory transmission)
* 3 subdivisions of the midbrain:
1) tectum- orientation map for survival (roof) lens accomodation
2) tegmentum- contains cranial nerve nuclei, red nucleus, and reticular central gray region (central part)
3) basis pedunculi- consists of pes peduncili
Contain SUBSTANTIA NIGRA
the largest nucleus of the midbrain
-degeneration result in Parkinsons disease
Brainstem- PONS (metencephalic)
separated from midbrain by SUPERIOR PONTINE SULCUS.
and from medulla by INFERIOR PONTINE SULCUS .
- contain all DESCENDING (MOTOR) and ASCENDING (SENSORY) fibers
Major surface structures (4)
VENTRAL MEDIAN SULCUS- divides medulla in half!
PYRAMIDAL TRACT- carries motor info from motor cortex to spinal cord for skeletal muscles.
INFERIOR OLIVARY NUCLEUS-
After motor fibers cross (from pyramidal tract) the midline, form..
LATERAL CORTICOSPINAL TRACT; a motor pathway of the spinal cord
Internally 2 parts:
1) Tegmentum: contains serval nuclei (vital reflexes)
2) PYRAMID: contains descending motor fibers
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together