Ray Francis C. LabraMedical Physics StudentDe La Salle University

The Human Brain

Definitions

Brain = the control center of movement

Cranium = part of the skull that directly covers the brain

Menininges = the three protective membranes between the brain and the cranium

Definitions continued Dura mater = outermost

membrane; it is the toughest and thickest

Arachnoid = the middle layer pia mater = inner most layer,

consists mainly of small blood vessels and follows the contours of the brains surface

Definitions continued Cerebrospinal fluid = bathes

the entire brain and fills the ventricles, protects the inner parts of the brain from varying pressures and transports chemical substances around the system

ventricles = a series of four cavities near the brains center

Definitions continued

Each hemisphere of the brain is restricted to a certain intellectual function. The left hemisphere is dominant in most people

Function of the Brain