CNS

CNS during embryonic

simple tube, neural tube

Gyri

elevated ridges of tissue

Sulci

shallow grooves separating the gyri

Flower POT

Frontal, Parietal, Occipital, Temporal

Frontal

primary motor, move our body (complex memories)

Broca's Area

in frontal lobe; controls ability to speak

Parietal

somatic sensory, recognize pain, coldness, light touch

Occipital

visual, seeing

Temporal

audio (deep inside is smell and memory)(complex memories)

White matter

inside the brain

Gray matter

outside brain (unmyelinated)

Corpus Callosum

connecting the two hemispheres

Diencephalon

(called Interbrain) contains thalamus, hypothalamus, epithalamus

Thalamus

relay station, sensory impulses, pleasant or unpleasant

Hypothalamus

autonomic nervous system, body temp, water balance, metabolism, thirst, appetite, sex, pain

Epithalamus

forms the cerebrospinal fluid

Brain Stems

(3 inches) contains midbrain, pons, medulla. helps breathing and blood pressure

Cerebellum

precise timing and helps balance and equilibrium

Meninges

3 membranes protecting CNS (dura matter=outermost layer)

Arachnoid Mater

middle layer, weblike extensions, attach it to Pia mater

Pia Mater

clings tightly to surface of brain and spinal cord

Cerebrospinal fluid

made from blood plasma, continually moving

Blood-Brain Barrier

made of least permeable capillaries, protects brain, only water, glucose, and important amino acids get though wall

Concussion

slight brain injury, no permanent damage

Contusion

result of marked tissue destruction

Intracranial hemorrhage

bleeding from vessels

Cerebral epidema

swelling of brain

Motor aphasia

damage to Broca's area, can't speak

Spinal Cord

17 inches, foramen magnum to first or second lumbar vertebra

Gray matter in Spinal Cord

looks like butterfly, surrounds central canal

White matter in Spinal Cord

myelinated fiber tracts, brain to cord