Nervous Sysstem Paramedic Lvl 2010 Chapter 8

Front 1

sciatic nerve

Back 1

largest peripheral nerve in the body. located at the hip and down both legs bilaterally.

Front 2

-Sympathetic pathway

Back 2

Fight or flight
Responsible for the bodys response to shock and stress
Adrenal glands

Front 3

-Parasympathetic Nervous sysystem

Back 3

Feed and Breed/ Rest and Reslax
Relaxes the body

Front 4

-Preganglionic neuron (first nerve)

Back 4

the first of two nervess, separated by a ganglionic synapse, in a series between the CNS and the organs that are innervated

Front 5

-Postganglionic Neuron (second nerve)

Back 5

the second of two nerves, separated by a ganglionic sunapse. in a series between the CNS and the organs that are innervated

Front 6

acytocholine

Back 6

a neurotransmitter secreted by the autonommic nervous system

Front 7

acetylcholinesterase

Back 7

an enzyme that rapidly destros acetylcholine onve it has reached the target tissue

Front 8

action potential

Back 8

electrical signals passing along nerve fibers

Front 9

adrenal glands

Back 9

endocrine glands that are located on top of the kidneys that release adrenatine when stimulated by the sympathetic nervous system

Front 10

* norepinephrine

Back 10

a neurottransmitter secreted bu the autonomic nervous system

Front 11

adrenergic

Back 11

description of a neuron that secretes the neurotransmitter norpinephrine.

Front 12

neuroglia

Back 12

provide supporting skeleton for neural tissue. isolate and protect the cell membranes of nerons. repair and protect from pathogen

Front 13

unmyelinated axons

Back 13

unsheathed axons, action potential electrical signals in th nerves prpagate along the entire axon membrane

Front 14

myelinated nerves

Back 14

sorrounded by myelinated sheath manyfactured byu a form of nervouse tissue called schwann cells

Front 15

beta-1

Back 15

primary type of stimulation in the heart fibers
causes-increased heart rate

Front 16

beta-2

Back 16

bronchodialation

Front 17

alpha-1

Back 17

vaso constriction

Front 18

alpha-2

Back 18

variable effects to the brain
enhibits the release of transmitters

Front 19

*Nodes of Ranvier

Back 19

Located between the individual Schwann cells at intervals of approximately 1 to 1.5 mm

Front 20

Schwann cells

Back 20

nervous tissue that helps form the myelin sheath around certain neurons

Front 21

white matter

Back 21

bundles of myelinated nervves are refferred to as white matter

Front 22

synaptic vessels

Back 22

neurotransmitters are contained within these

Front 23

frontal lobe of the brain

Back 23

conscious thought, speech, smell, primary motor area

Front 24

parietal lobe of the brain

Back 24

taste, primary sensory area, body awarness, language

Front 25

tempral lobe of the brain

Back 25

hearing, reading

Front 26

occipital lobe of the brain

Back 26

vision

Front 27

thalmus

Back 27

relays most sensory information from the spinal cord and certain parts of the brain to the cerebral cortex.
senses for pain, temperature, and pressure

Front 28

Hypothalmus

Back 28

controls carious homeostaric funtions such as body temp, respirations, and heartbeat

Front 29

Cerebral Cortex

Back 29

receives info from skin, muscles, glands, and organs

send messages to move skeletal muscles

performs thinking, learning. and remembering

Front 30

Basal nuclei

Back 30

coordination of slow, sustained movements

Front 31

cerebellum

Back 31

subconscious movements of skeletal muscles

Contributes to muscle tone, posture, balance. and equilibrium

Front 32

Brain stem

Back 32

reflex ccenter of eyeball, head, and trunk

transmits info between brain and spinal cord

Front 33

(CSF) cerebrospinal fluid is created by this cell

Back 33

choroid plexus

Front 34

Venticles of the brain

Back 34

hollow areas in the brain

Front 35

foramen magnum

Back 35

where the spinal cord leaves the brain

Front 36

cauda equina

Back 36

where the spinal cord gives rise to individual nerve roots in the lumbar spine

Front 37

ascending fibers

Back 37

fibers that carry sensory information from the periphery to the brain

Front 38

descending fibers

Back 38

fibers that cary motor impulses from the brain to the fibers of the periipheral nervous system

Front 39

corticospinal tracts

Back 39

coordinates movements especially of the hands

Front 40

reticulospinal ttracts

Back 40

transmit information related to the involuntary body movements

Front 41

Ganglia

Back 41

collections of nerve cell bodies outside the CNS

Front 42

motor nerves

Back 42

carry commands from the brain to the reveptor on the muscle for nerve impulses
(neuromuscular junctions)

Front 43

plexus

Back 43

several nerves come together to form an organized intermingling

Front 44

4 types of plexus

Back 44

cervical plexus
brachial plexus
lumbar plexus
sacral plexus

Front 45

sciatic nerve

Back 45

the largest peripheral nerve in the body. runs down both legs

Front 46

olfactory nerve

Back 46

provides sense of smell

Front 47

optic nerve

Back 47

provides vision

Front 48

oculomotor nerve

Back 48

allows movment of eyes and eyelids

Front 49

vagus nerve

Back 49

provides motor functions

Front 50

accessory nerve

Back 50

control swallowing

Front 51

hypoglossl nerve

Back 51

provides motor functions for the tongue, throat

Front 52

parasympathetic nerves release acetylcholine, which stimulate

Back 52

muscarinic receptors

Front 53

sympathetic fibers release either _________ or acetylcholine to stimulate

Back 53

(norepinepherine) to stimulate adrenergic receptors or acetylcholine to stimulate muscarinic receptors