Nervous System 1

Front 1

Afferent pathway

Back 1

Ascending (from periphery to brain)

Front 2

Efferent pathway

Back 2

Exiting brain( the response or reaction from the brain involving muscles and glands)

Front 3

CNS

Back 3

Consists of brain and spinal cord . Fxn is to absorb info and interpret and then decide on the desired action. 12 paris cranial nerves & 31 pairs of spinal nerves.

Front 4

PNS

Back 4

Consists of many receptors . Is a two way transport system involving efferent and afferent . Involves spinal and cranial nerves .

Front 5

Somatic vs autonomic

Back 5

Somatic = voluntary

Autonomic = involuntary & splits into para and sympathetic

Front 6

Brain stem

Back 6

Located b/t brain and spinal cord . Controls basic functions like breathing sleep and BP.

has midbrain ( role in vision hearing, head movement and the fright reflex)

Has medulla oblongata ( respiration, heart rate, blood vessel D , sensations of touch and a role in swallowing breathing and hiccups) Has pons for respiration

Front 7

Cerebellum

Back 7

Located at base and back of brain responsible for coordination and balance .

Front 8

Diencephalon

Back 8

Contains hypothalamus and Thalamus which regulates temp, water bal, hunger , sex drive has pineal gland (which Secreted melatonin sleep)

Front 9

Cerebrum

Back 9

Mass of brain

Front 10

Frontal lobe

Back 10

Problem solving judgement and motor fxn

Front 11

Parietal lobe

Back 11

Forms centre of cerebrum , manages sensation handwriting and body pos.

Front 12

Temporal lobe

Back 12

Lateral and inferior to parietal . Involved in memory and hearing.

Front 13

Occipital

Back 13

Posterior of cerebrum superior to cerebellum contains the brains visual processing system .

Front 14

Protection for CNS

Back 14

Skull protects brain. Vertebrae the spinal cord. Protective tissue membrane called meninges (protects brain and spinal cord) meninges consist of dura arachnid and pia mater .

Front 15

Dura mater

Back 15

Strong thick fibrous and contains 2 layers

Front 16

Sub arachnoid and pia mater

Back 16

The arachnoid mater lines the inner side if the dura mater. A space is found between the pia and arachnoid mater which contains CSF

Front 17

Cerebrospinal fluid

Back 17

Cushions brain and spinal cord. Consists of mostly water and few WBC, few proteins and no RBC. Anything that impacts on the movement of CSF Inc chance of brain damage .

Front 18

Blood brain barrier

Back 18

Blood brain barrier protects the brain against pathogenic injury . It's the low permeability of the capillaries in the brain that is referred to as the blood brain barrier .

Front 19

Neuron structure

Back 19

Dendrities = receive info

Cell body (soma) = integrates info

Axon/ Terminals transmits info to another neuron or effector organ .

Front 20

Neuroglia/glia

Back 20

Non- neuronal cells that maintain homeostasis, form myelin , provide support and protection for for neurons in the C& PNS

Front 21

Nervous tissue organisation in CNS

Back 21

Grey matter has cell bodies and dendrities

White matter has axons bundled together called tracts

Front 22

Cerebellum

Back 22

Coordination

Balance

Front 23

Diecephalon

Back 23

Hypothalamus

Integrates messages to brains other ares