Anat nervous

Question 1

nervous system

Answer 1

blood vessels, nueral tissue n CT

function: snesory, integrative, motor

Question 2

neural tissue cells

Answer 2

neuron=nerve cell; react to changes in surrounding

neuroglial: maintains homeostasis, provide support/protection, form myelin

Question 3

nerves

Answer 3

bundles of axons

Question 4

sensory receptors

Answer 4

end of peripheral neuron provide sonsery function. convert info into nerve impusles-PNS-CNS

Question 5

integrated

Answer 5

signals from senosry that r bought 2gether then decision are made by the person

Question 6

motor functions

Answer 6

CNS- effectors (muscle & glands-secret when stimulated)

Question 7

motor part of PNS

Answer 7

somatic and autonomuc nervous system

Question 8

cell body

Answer 8

granualr cytoplasm, mitochondria, golgi, microtubule, only part that has ribosome

neurofibrils: fine thread extend into axon for support

Question 9

chromatophilic substance (Nissl bodies)

Answer 9

in cytoplasm (rough ER in membranous packets)

Question 10

replication

Answer 10

mature neurons don’t divide, neural stem cells do

Question 11

dendrites=many

Answer 11

axon: one
arises from axonal hillock
conduct impulse away from cell body

cytoplasm: many mitochondria, tubules, neurfibril NO RIBOSOMES

Question 12

axon

Answer 12

branches: collateral
extensions w/ specialized endings: axon terminal.
official end: synaptic knob then synaptic ccleft (space)

Question 13

axonal transport

Answer 13

vesicals, mitochondria, ions, nurtients, transmitters moving from cell body to ends of axon

Question 14

schwann cells

Answer 14

PNS, encase large axon, lipids. layers of membrane around

Question 15

nodes of ranvier

Answer 15

gaps in myelin shealth betw schwann cells

Question 16

for smaller axon

Answer 16

PNS enclose in schwann but lack myeling shealth. lie in grooves

Question 17

white matter

Answer 17

myelinated

Question 18

oligodendrocyte

Answer 18

CNS nuroglial cells produce myelin
CNS myelinated axons lack neurilemmae
star shaped w/ few process, in row along myelinated axon
provide myelin for multiple cell at once

Question 19

grey matter

Answer 19

unmyelinated axon n cell bodies

Question 20

bipolar neurons

Answer 20

2 processes (1 axon, 1 dendrites)
eyes nose ears sensory

Question 21

unipolar neurons



Answer 21

single process- 2 branches, single axon
1 branch (peripheral process) dendrites
other branch (central process) eneters brain/spinal cord
cell bodies form gnaglia sensory (most)

Question 22

multipolar neurons

Answer 22

many process from cell bodies/ 1 axon, other dendrites
CNS
internueron motor

Question 23

nterneurons association/internuncial

Answer 23

CNS

link btw other nuerons. part of CNS to another part of CNS

Question 24

neuroglial cells in PNS

Answer 24

• Schwann

- Satellilte: support ganglia (clusters of cell bodies)

Question 25

neuroglia CNS

Answer 25

astrocytes oligodendrocytes ependyma microglia

Question 26

astrocytes

Answer 26

star shaped
btw neurons n bvesses support n hold structures together
aid metabolism
regulate concentration of ions
injury, form scar tossue in CNS
blood brain barrier

Question 27

microglia

Answer 27

smallest w/ few proces CNS support, phagocytize stuff, proliferate when brian injury/disease

Question 28

ependyma

Answer 28

cuboidal/colummnar/cilia inner lining of central canal in spinal cord, single layer cover ventricles n cover choroid plexuses

Question 29

presynaptic neuron

Answer 29

bring impulse to synapse to stimulate postsynaptic neuron or effector
synaptic cleft: space that separates them

Question 30

synaptic transmission

Answer 30

process of impulse in pre to post

Question 31

nerve impulse axon-axon terminal

Answer 31

knobs: contain synaptic sac containing neurotransmitter

nerve impulse reach knob: voltage calcium channel O, Ca in. ^ in Ca inside cause vesicles to exocytos transmitters

Question 32

action of transmitter on postsynaptic cell

Answer 32

excitatory: on -inhibitory: off

Question 33

meninges

Answer 33

membranes located btw bone and nervous tissue, protect

outside
dura
arachnoid
pia
inside

Question 34

dura mater

Answer 34

tought, white, dense CT, blood vessels n nerves, spearated from vertebare by epidural space (blood, loose CT, adipose)

Question 35

arachnoid

Answer 35

thin, weblike, no blood,

beneath: subarachnoid space contain CSF

Question 36

pia mater

Answer 36

very thin, nerve n blood vessl, follow contour

Question 37

ventricles

Answer 37

filled w/CSF, continouse w/ central canal

• lateral
  1st: left hemisphere
  2nd: right hem

3rd: beneath corpus callosum, conects w/ lateral
4th: infront of cerebellum

Question 38

cerebral aqueduct

Answer 38

connects 4th to 3rd ventrical

Question 39

choroid plexuses

Answer 39

capillaries from pia secrete CSF, in lateral first then to 3td/4 the into central canal/ into subarachnoid through 4th ventricle

Question 40

CSF

Answer 40

aborded into blood, great concentration of sodium n lest glucose/potassium
nurtitive n protective
maintain stable ionic concentration

Question 41

knee-jerk

Answer 41

monosynaptic: 2 neurons, striking patellar ligaments intiate.
guadriceps femoris muscle goup, lumbar region

Question 42

withdrawal reflex

Answer 42

touching something painful, uses interneurons