Nervous Tissue

Question 1

nerve

Answer 1

Neuro

Question 2

nerve cell. properties of excitation, conduction, and secretion

Answer 2

Neuron

Question 3

chemical released at the distal end of a neuron, a messenger

Answer 3

Neurotransmitter

Question 4

towards

Answer 4

“af”

Question 5

away

Answer 5

“ef”

Question 6

afferent. message towards the brain

Answer 6

Sensory neuron

Question 7

efferent, message away from the brain

Answer 7

Motor neuron

Question 8

between

Answer 8

Inter

Question 9

neuron between sensory and motor found only in the CNS

Answer 9

Interneuron

Question 10

electrical and chemical means to send messages QUICKLY from cell to cell

Answer 10

Nervous system

Question 11

Of our 11 systems, which two systems maintain internal communication/coordination?

Answer 11

nervous system (electrochemical) and endocrine (hormones in the blood)

Question 12

What are the 2 subdivisions of the nervous system?

Answer 12

Central nervous system (brain and spinal cord) and peripheral nervous system (nerves and rest of nervous system)

Question 13

The peripheral nervous system is divided into what divisions?

Answer 13

sensory and motor division

Question 14

skin, muscle, bone joint

Answer 14

somatic subdivision

Question 15

thoracic and abdominal organ. heart, lung, stomach and bladder

Answer 15

visceral subdivision

Question 16

prepares the body for action (fight or flight)

Answer 16

sympathetic

Question 17

rest and digest

Answer 17

parasympathetic

Question 18

digestive tract has a nervous system of its own know as?

Answer 18

enteric nervous system

Question 19

What are the functional classes of neurons?

Answer 19

Sensory (afferent) neurons, interneurons, motor (efferent) neurons

Question 20

AKA soma. cell body contains the nucleus

Answer 20

neurosoma

Question 21

receives signals from receptors (1-1000s)

Answer 21

dendrites

Question 22

rapid conduction of nerve signal to target cell

Answer 22

axon

Question 23

where the axon originates and where threshold occurs

Answer 23

axon hillock

Question 24

cytoplasm of the axon

Answer 24

axoplasm

Question 25

plasma membrane of the axon

Answer 25

axolemma

Question 26

spiral layer of insulation

Answer 26

myelin sheath

Question 27

production of myelin sheath

Answer 27

myelination

Question 28

outermost layer (ending) of the myelin sheath

Answer 28

neurilemma

Question 29

myelin covered segment

Answer 29

internode

Question 30

gap between the myelin sheath segments

Answer 30

node of ranvier

Question 31

bulbous end that forms the synapse with the target cell

Answer 31

axon terminal (terminal button)

Question 32

space between 2 neurons, between the axon terminal and the target cell

Answer 32

synapse

Question 33

Where are neurotransmitters released at?

Answer 33

the synapse

Question 34

generate energy for neuron

Answer 34

mitochondria (presynaptic)

Question 35

packages of neurotransmitters that will be released into the synapse by a process know as exocytosis

Answer 35

vesicle (presynaptic)

Question 36

receives signal through synapse from neurotransmitters

Answer 36

receptors (postsynaptic)

Question 37

How do we stop the signal?

Answer 37

reabsorbtion, diffusion, enzyme breakdown (synapse clearance)

Question 38

bulb body, like octopus, up to 15 arms, attach to nerve fibers to form myelin sheath

Answer 38

oligodendrocytes (CNS Neuroglia)

Question 39

resemble cuboidal ciliated epithelia that line the brain and SC, secrete/move CSF

Answer 39

ependymal (CNS Neuroglia)

Question 40

macrophages that develop from WBC and seek out debris, will become clustered when there is an injury, trauma, or stroke

Answer 40

Microglia (CNS Neuroglia)

Question 41

covers brain and nerves except synapse in gray mater. 90% of brain tissue. forms framework, monitors stimuli/blood flow/glucose

Answer 41

Astrocytes (CNS Neuroglia)

Question 42

myelin sheath (PNS Neuroglia)

Answer 42

schwann cells

Question 43

surround the soma of neurons, provide electrical insulation, regulate chemical environment (PNS Neuroglia)

Answer 43

Satellite cells

Question 44

multi dendrite, one axon, most common, brain, SC (CNS)

Answer 44

multipolor

Question 45

single process leading away from soma, bypasses the soma to the SC, sensory

Answer 45

unipolar

Question 46

one dendrite, one axon, found in retina of eye

Answer 46

bipolar

Question 47

multi dendrite, no axon, found in brain

Answer 47

anaxonic