CNS & PNS

Sensory & Motor

Somatic & Visceral

ANS

ENS

CNS= Brain/ Spinal Cord

PNS= Cranial/ Spinal Nerves

Sensory= Information carried out by afferent neuron toward the CNS,initiated by a receptor.

Motor= Information carried out by efferernt neuron away from CNS.

Somatic=Carries information to skeletal muscle (vol)

Visceral(autonomic)=carries information to smooth muscle glands (involuntary).

Muscle

gland

Neuroneuronal

neuroglandular

S= Up system

p= Down system

Smooth muscle movement

organ secretion

Sensory (receiving)

Integrative(deciding)

Motor(reacting)

Dendrite

soma

axon

80% of receptors, sensory portion

and carries out stimulus toward soma

axon hillock

initial segment

Mylinated axons

Unmylinated

irratability

conductivity

secretion

electrical control

regulation

communication

evaluation

brain functions

Microglia

Astrocytes

Oligodendrocytes

Ependymal cells

Schwann cells

satellite cells

Fibroastrocytes- hold neurons in place and replace damaged

Protoplasmicastrocytes- control chemical concentration

Action: Irreversible, nongraded, stimulatory, nondecremental.

Local: reversible, graded, stimulatory and or inhibitory,decremental.

receptor

sensory neuron

interneuron

motor neuron

effector

Pre- where effectors are occuring and less stimulation

post- no stimulation releases potassium

Dura Mater- tough mother

Arachnoid- spiderweb like

pia mater- faithful mother

Lateral (2)

third

fourth

recieve

analyze

sensory

determine response

motor output

Prosencephalon(forebrain)

Mesencephalon(midbrain)

Rhombencephalon(hindbrain)

Telencephalon/Discephalon = Pro

Mesencephalon

Metercephalon/myelencephalon=Rhomb

Cerebrum= telencephalon

thalamus,hypothalamus,epithalamus=diencephalon

Pons/cerebellum= metencephalon

medulla oblongotta-myelincephalon

Gyri

sulci

fissures

hemispheres

lobes

Frontal- concentration, planning, problem solving

Parietal- speech, words, pain, temperature

Temporal- auditory, hearing

occipital- vision

drug

work

gambling

food

sex

Gateway to the cerebral

23 nuclei

Somesthetic

motor

visual

audio

emotional

Controls heart rate

body temp

hunger/thirst

sleep

emotions/memory

light in eyes

gastro intestinal secretions

regular rate of breathing

for transmission

buoyancy

protection

chemical stability

Superior

inferior

middle

superior, inferior, medial, lateral rectus

superior and inferior obliques

acending= sending in sensory info

decending= sending out motor info

G= recieves incoming info in horns

W= carry info up and down in collumns

Fasciculus(posture)

spinothalamic(pain)

Spinocerebellar(movement)

Corticospinal (voluntary move)

vestibulospinal (balance)

tectospinal ( move of head)

C-I: Olifactory- sensory- smell

C-II: Optic-sensory-vision

C-III: Oculomotor- Motor- Movement of eye, opening eye, sixe of pupil

C-IV: Trochlear- motor- eye movement and movement of superior oblique

C-V:Trigeminal-mixed- facial expresions and produce saliva/taste

C-VI:Adbducens-motor-moves lateral rectus.

C-VII: Facial-mixed-facial expressions, produce saliva, taste.

C-VIII:Vestibulochlear-sensory-hearing/balance

C-IX: Glossopharngeal-mixed-taste,control blood pressure, and release saliva.

C-X: Vagus: mixed- viscera control

C-XI: Accessory-motor-control head/neck

C-XIII: hypoglossal-motor-respiration, tongue.

Cervical

brachial

lumbar

sacral

axillary

median

radial

ulnar

musculataneaus

Epineurium- outermost layer

perineurium- looser layer

endoneurium-small lose tissue