Reviews 2 - + CNS: brain + spinal cord - PNS: everything...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: + CNS: brain + spinal cord - PNS: everything else + The Meninge found sandwich between the other two meninges: Arachnoid mater + Cerebellum little-brain = Important in Balance , Planning and Executing. Does not directly influence effector neurons. ( Associates w/ a lot of Motor shiz + give rise to resting tremors ) * 3 distinct parts:- Vestibulocerebellum: maintain Balance & control Eye movement.- Spinocerebellum: enhances muscle tone, coordinates skilled , voluntary movement; (Compare Intent vs. Response & correct any errors) - Cerebrocerebellum: provides input to cortical motor areas & stores procedural memories + The Diencephalon (Thalamus + Hypothalamus) * Hypothalamus responsible for ( Involuntary Internal Response ): or Coordination Center w/ the Autonomic nervous system . like Body Temp . control; Production of Posterior Pituitary Hormones ; food intake control.- Constantly sampling the blood to check for Homeostatic functions , so NO BBB. * Thalamus- Relay station for Preliminary Processing of All Sensory Input Directs stimuli of interest to the proper areas of the brain Has Crude awareness but cant distinguish Location & Intensity Important role in positively reinforcing voluntary motor control + Cerebrum = largest portion of brain.2 Hemispheres connected by Corpus Callosum. > Integration of neural input & output occurs in the gray matter * Cerebral Cortex outer layer of the cerebrum (create consciousness) * Basal ganglia internally localized; involved in movement control * Limbic system links higher cognitive function with emotional response Coordinate aspects of learnings and survival instincts . A ring of forebrain structures surround the brain stem Contains region designated as Reward and Punishment centers Play a key role in Emotion (does not provide conscious percep.) > Signals are transmitted by the white matter * Damage to Premotor Cortex area would result in the inability to perform accurate motor actions * Dual Reciprocal Innervations help bring u back to Homeostatic func. Faster. ( DO NOT serve as backup system) * Constant sampling the blood for toxin is - Medulla. (where 90% of decussation occur) + Ascending tracts: transmit signals derived from afferent input up the spinal cord to the brain. (different tracts for different stimuli) Descending tracts vice versa + The Brain: Glial cells make up 90% of cells the other 10% are Interneurons normally uses only glucose as a fuel for energy production. CANNOT resort to Anaerobic Metabolism Glucose #1 choice If ran out of glucose, will use Ketone body - The most abundant type of neuron in the BODY is Interneuron- Glial cells DO NOT conduct electrical impulse > ( Astrocytes)- provide structures > ( Microglia cells)- Phagocytes / induce formation of blood-brain barrier (have tight junction Astrocytes that seal capillaries) > make CSF made from Choroid plexuses , have similar materials- blood, selectively transport materials by...
View Full Document

This note was uploaded on 07/27/2011 for the course BIOL 3324 taught by Professor Ziburkus during the Fall '07 term at University of Houston.

Page1 / 9

Reviews 2 - + CNS: brain + spinal cord - PNS: everything...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online