11_Central Nervous System

11_Central Nervous System - Central Nervous System...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Central Nervous System
Background image of page 1

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

View Full DocumentRight Arrow Icon
Embryonic Development
Background image of page 2
Crainial Meninges Connective tissue layers surrounding brain and spinal cord Functions: Separate brain from skull Enclose and protect blood vessels supplying brain Contain and circulate cerebrospinal fluid
Background image of page 3

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

View Full DocumentRight Arrow Icon
Brain Ventricles Lateral Ventricles Septum pellucidum Third ventricle Mesencephalic (cerebral) aqueduct Fourth ventricle Choroid plexus
Background image of page 4
Cerebral Spinal Fluid (CSF) Produced in the choroid plexus Made of ependymal cells Clear, colorless fluid Circulates through the ventricles Functions: Buoyancy Reduces brain weight by 95% Protection • Provides liquid cushion Environmental stability • Transports nutrients, chemical messengers and removes waste
Background image of page 5

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

View Full DocumentRight Arrow Icon
Hydrocephalus Excessive CSF Can result from either obstruction of CSF flow or problems with the arachnoid villi intrinsically Can be treated by inserting ventriculoperitoneal shunt (VP) or endoscopic third ventriculostomy (ETV) “Water on the brain”
Background image of page 6
Cerebrum Location of conscious thought processes Divided into hemispheres Connected by corpus callosum Gray matter (cortex) houses motor neurons cell bodies White matter houses myelinated axons Gyri and sulci account for large surface area
Background image of page 7

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

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/06/2011 for the course PDBIO 220 taught by Professor Tomco during the Winter '09 term at BYU.

Page1 / 25

11_Central Nervous System - Central Nervous System...

This preview shows document pages 1 - 8. Sign up to view the full document.

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