the rate of csf is formed

must equal at the rate that is drained

pia mater

inner most layer the gentle mom

menannenges

tissues that surround the brain

arachanoid

on the inside

dura mater

the hard mother on outside

rem sleep

the body has you locked in when you dream

what are the different levels of conciousness

attentiveness,balertness,Relaxation, Innatentiveness

conciusness

state of wakefulness depends one RAs

A cerebellum disfunctions appear how

they have jerky muscle movement and a pears drunk

always check respiration rate its under 10 what should you do

You should hold medication

medulla oblongata

is the vital center

controls heart rate bp and resp

thalmus

serves as a relay station for the sensory info

if you have a deficiency in dopamine

you will have pakinsons

olfactory

lets you smell

occipital lobe

lets you see

temporal lobe

allows you. to hear

where is parietal lobe at

Behind central sulcus

parietal lobe

getting general sensory info called the primary somatoe sensory area

If you damage the broca area what happens

They develope aphasa which they have a hard time speaking

ex cva

decussation

the crossing of nerve fibers from one fibers from one side of brain to the other side

broca area

The part of the brain concerned with speech

key role in voluntary motor function ,personality behavior, emotional expression

frontal lobe

the autonomic nervous system

is part of the pns

how many coccygeal nerves

1

how many lumbar nerves

5

how many thoracic nerves

12

how many cervical nerves

8

If you have abnormal reflexes of cns

may indicate lesions, tumors or neurological diseases like ms

a person will not be able to see if they have a

severed nerve

optic disc is what

the blind spot

what does leretina contain

rods and cone

The baron reflector controls what?

bloodpressure

When your sensor get use to a stimulus is?

Adaption

what happens to a person with a severed optic nerve

They cant see

what nerve tract carries back sensory info

Ascending

The spinal corsd is part of what

part of the cns

thick as your thumb

about 17 inches long

The structure of the eye that avascular and referred to the window of the eye

cornea

The surface of the cerebrum is folded into elevations that resemble speed bumps

gyri or convulations

the part of the brain that is referred to as the vital center

medulla oblongata

what is the enzyme that erases ach

acetylcholinerase

what makes the white mater white

myelin sheath

Mechanoreceptors

Stimulated by changes in pressure or movements of body fluids

Thermoreceptor

stimulated by changes in temp

nociceptors

Pain receptor stimulated by tissue damage or distention

chemoreceptors

stimulated by changes in the chemicals such as hydrogen ion + calcium and food

rods do what in eye

They pick color up, provides us with black and white vision

what happens when circular muscle contract in eye

the pupil constrict

What happens when radial muscle contract

pupil dilate

iris has two eyes muscles

radial muscle and circular muscles

refraction

is the bending of light

fovea centralis

the area that contains the highest concentration of cones

cones are most abundant where

central portion of the retina

rods are most abundant where

periphery

The retina is the inner most layer of the eyeball

The nervous layer contains visual receptors, which are sensitive to light called photo receptors which are cones and rods

how is the pupil eye regulated

by two sets of intrinsic muscles and helps regulate amount of light in eye

cornea reflex

protective function and causes blinking

What is called the window of the eye

the cornea

cornea

covers the area over the iris which is the color part

what are the three layers of eyeball

sclera, retina and choroid

What do tears have

They have losozyme which helps destroy pathogens which helps destroy pathogens prevents infection

Where do tears drain from

lacrimal sac, lacrimal punta, and lacrimal duct

The lacrimal apparatus

it has lacrimal glands and tear ducts its in the upper part of eye which secretes tears towards the nose

eyelashes

Help trap dirt, as well touching eyelids stimulates blinking

The conjunctiva is very vascular

Alot arterys

why must the surface of eye must be kept moist

It will ulcerate and scar eye if you dont

what is conjunctiva

thin mucous membrane that lines the inner surface of eyelids

eyelids aka (palpebrae)

It protects eyes from from foreign objects as well as wash tears over the surface of the eyes

what do the eye brows do?

keep perspiration out of eyes and shades eyes from glaring light,IT participates in facial expression

What are the visual accessory organs

eyebrows, eyelids, conjuntiva, eyelashes, lacrimal apparatus, Extrinistic eye

accessory organs do what ?

Assist with function and protecting the eye from injury

what is the grey matter composed of

cell bodies, interneurons and unmyelinated fibers

The tissue of cns

is white and gray

interneurons

found only in the cns it forms connection between sensory and motor neurons in the brain they play a role in thinking and learning

senosory neurons

carries information from the pns to the cns

motor neuron

make you move

Nervous System

Acts as an interpreter for various organ system.

what is Unmyelinated

Neurons that are not incased in Myelin

What does the myelin do

Protects and insulates the axon

Myelin sheaths

White layer of fatty material that encases most of the nerves fibers of peripheral and central nervous system

WHAT DOES THE MOTOR NEURONS DO?

CARRIES INFORMATION FROM THE CNS TOWARDS THE PERIPHERY .

ALSO CALLED EFFERENT NEURONS

What does the sensory neurons do?

Carries information from-the periphery towards the Cns

also called the Afferent Neurons

What are the 3 types of Neurons

Sensory Neurons,Motor Neurons,Interneurons

What happens at the end of axon

It undergoes extensive branching to form hundreds of thousands of axon terminals this is where chemical neurotransmitters are stored

What does the axon do ?

It transmits information away from the body

what are the parts of the neuron

Dendrite, cell body, axon and Axon terminals

What does it mean when Neurons or Nonmitotic

They do not replicate when they are injured

Neuron

Most important in the transmission of information, it enables the nervous system to act as a vast communication network

What do the Neuroglia's barriers help do ?

The barriers helps prevent toxic substances in the blood stream from entering the nervous tissue of the brain and spinal cord(CNS)

What are the most abundant glial cell?

Astrocytes

What does the Neuroglia don't do ?

They don't conduct electrical impulses

Neuroglia

They support insulate , nourish and care for the delicate neurons. Most of the glial cells are located in the cn.

What converts a plan into action

The motor nerves

what do the motor nerves do

The motor nerves convey info from cns towards the muscle glands of the body.They carry the plan out made by cns

integrative functions

The brain recalls the information it then puts everything together it knows about the subject and then makes a plan

If the vagus nerve is damage what happens

Causes hoarseness to the voice or loss of voice , impaired swallowing

baroreceptor/ vagus nerve do what

regulation of blood pressure

glossopharyngeal

carries taste sensation from the posterior of the tongue to the brain

Vestibulococchlear

A sensory nerve that carries information for hearing and balance from inner ear to brain

trigeminal nerve

A mixed nerve with three branches supplying the facial recognition

trochlear nerve

helps move the eye ball if you damage it may cause double vision and inability to rotate the eye properly

oculomotor nerve

A motor nerve that causes contraction of most of the extrinsics muscles

optic nerve

A sensory nerve that carries visual information from the eye to the primary visual cortex

olfactory nerve

A sensory nerve that carries information from the nose to the olfactory area aka smell

AN efferent or motor neuron

carries the nerve impulse away from cns to the the muscles or thigh

What does the sensory function do?

It gathers info from inside and outside of the body environment.The nerves carry the info to the CNS

chemoreceptors

STimulated by changes in

what are the functions of the nervous System?

Sensory function, Integrative function and Motor Function

Where is the peripheral nervous system is located?

PNS is located outside the CNS

Peripheral Nervous System

PNS

Nerves that connect the CNS with the rest of the body

Inside Cns

Aka Central Nervous System

The Brain

The Spinal Cord

What acts as a conductor for the nervous system so that the functions are performed correctly?

The Nervous system