Chapter 8

Autonomic Nervous System

Made up of sympathetic and parasympathetic divisions and controls all involuntary body functions.

Axon

Delivers signals/ impulses to its target location or to another neuron. At the end of the axon is the axons terminals

Brainstem

Found at the base Of the brain and is made up of three different organs

Cell body

contains the nucleus and most of the cytoplasm

Cerebellum

The mini brain located in the lower back of the head works with our senses of balance coordination and equilibrium uses information from the semicircular canals and proper sectors of the muscles to tell us our location we can hinder its ability due to drugs, alcohol, etc

Cerebrum

largest part of the brain and controlled all conscious thought memory and most senses

Corpus callosum

a bridge of white matter that connects the two hemispheres together messages to cross

Cranial Nerves

12 pairs named with Roman numerals

Dendrite

receive signals that may result in a nerve impulse

Dietencephalon

region of the brain that incases the third ventricle

Gyri

The Ridges and bulbous parts of the cerebral cortex

Meninges

three thin layers protective membrane that wrap around the CNS

Parasympathetic

rest and Digest default mode of the body when not in an emergency situation

somatic nervous system

Controls all voluntary actions and body functions muscle movement

Spinal nerves

31 pairs

Sulci

The shallow grooves about 1/4 inch deep around Gyri

Sympathetic

Fight or flight the neurotransmitters adrenaline is secreted

Neuroglia

non-neuronal cells in the nervous system that support, protect, and nourish neurons