NERVES

Functions of the nerves

1)Communication and control

2)Sensory

3)Interpret

4)Motor

CNS (central nervous system)

Brain and spinal cord

PNS (peripheral nervous system)

Cranial nerves

ANS (autonomic nervous system)

Involuntary movement

Nerve tissues

Neurons

Neuroglia

Nerves

Parts of a nerve cell

cell body, dendrites, axon

myelin sheath

covers neuron to protect it

not all nerves have this

Neurilemma

Inside the myelin sheath, is what fixes a nerve when it gets hurt

Is grey matter myelinated or unmyelinated?

unmyelinated

Is white matter myelinated or unmyelinated?

myelinated

Cerebral cortex is split into 4 parts...

Frontal

Parietal

Temporal

occipital

Diencephalon: Thalamus

Middle of the brain

Holds basic instinctual control, fight or flight instincts

Pons

A brain structure that relays information from the cerebellum to the rest of the brain

Midbrain

A small part of the brain above the pons that integrates sensory information and relays it upward.

medulla oblongata

Part of the brainstem that controls vital life-sustaining functions such as heartbeat, breathing, blood pressure, and digestion.

where does the spinal cord come in through the skull

There is a hole in the bottom of the spine where the spinal cord enters

Cerebellum

'mini brain'

Balance and control

Ventricles in the brain

Filled with fluid to protect the brain. The membrane that holds this fluid is called meninges

3 layers of meninges

the dura- thick and DURAbule

arachnoid- webbed kind of texture.

Pia- the thin layer, coach Pia was a little short man

Circle of Willis

Main blood supply to the brain

Types of neurons

sensory, motor, interneurons

Synapse

the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron

(the part where it jumps between neurons, neurotransmitters help them make the jump)

Sulci

shallow grooves in the brain

Gyri

folds in the brain