Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

A&P > Neural Tissue > Flashcards

Neural Tissue Flashcards

(52 cards)

Start Studying
1
Q

Neuron

A

Basic functional unit of nervous system
Non dividing
Fx communication, info processing, and control functions of nervous system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Neurolgia

A

Supporting neurons

Repair and supply nutrients

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Central nervous system

A

Inside dorsal cavity
Spinal cord and brain
Fx bring sensory info in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Periphereral nervous system

A

Neural tissues outside of CNS

Carries motor commands to peripheral tissues

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Afferent division of PNS

A

Carries sensory info from PNS sensory receptors to CNS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Efferent division of PNS

A

Carries motor commands from CNS to PNS muscles and glands

Think reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Somatic nervous system

A

Controls skeletal muscle contractions and joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Structure of a neuron

A

Cell body
Short branched dendrites
Long single axon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Dendrites

A

Internal communication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Axon hillocks

A

Where axon starts

Thick section of cell body where axon attaches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Axon terminal

A

Play a role in communication with other cells and touch the post synaptic cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Structural classification of neurons

A

Anaxonic neurons
Bipolar neurons
Unipolar neurons
Multipolar neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Anaxonic neurons are located

A

In brain and sense organs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Bipolar neurons are located

A

Special sensory organs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Unipolar neurons are found

A

Sensory neurons of PNS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Multipolar neurons are found

A

Skeletal muscle neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Proprioceptors

A

Monitor position and movement skeletal muscle and joints

This is a type of sensory receptor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Somatic sensory neurons

A

Monitor the outside world and our position within it

CNS to skeletal muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Visceral sensory neurons

A

Monitor internal conditions and the status of other organ systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Types of neurolgia of CNS

A

Ependymal cells
Astrocytes
Oligodendrocytes
Microglia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Ependymal cells

Study These Flashcards
A

In brain ventricles

Secrete Cerebrospinal fluid

22
Q

Astrocytes

Study These Flashcards
A

Part of blood brain barrier

23
Q

Oligodendrocytes

24
Q

Microglia

Study These Flashcards
A

Defense by engulfing cellular debris, waste products, pathogens

25
Neurolgia of the PNS
Satellite cells | Schwann cells
26
Ganglia
Masses of neuron cell bodies outside of CNS
27
Wallerian degeneration
Axon distal to injury separates from cell body and Schwann cells form a path for new growth
28
Depolarization
Sodium enters cell causing membrane potential to be more positive
29
Repolarization
Restoring normal resting potential
30
Hyperpolarization
Gated potassium channels open and potassium leaves the cell causing the inside of the cell to become more negative
31
Graded potentials
Local potentials proportional to size of stimuli Na and k channels Depolarization, repolarization, and hyper polarization
32
Action potential
Changes in the membrane potential that affect entire excitable membrane
33
Threshold
When membrane is depolarizer to initiate action potential
34
Electrical synapse
Direct physical contact between cells
35
Chemical synapses
Involves neurotransmitter
36
Excitatory neurotransmitters
Cause depolarization and promote generation of action potential
37
Inhibitory neurotransmitters
Cause hyper polarization and suppress generation of action potential
38
Cholinergic synapses
Release acetylcholine
39
Four main parts of neurons
Cell body Dendrites Axon Telendria— terminal branches
40
Schwann cells
PNS | Form myelin sheaths on axons
41
Satellite cells
PNS | Surround cell body and regulate environment
42
Leak channels
Found in plasma membrane of neuron | Resting potential
43
Chemical gated channels
Cell body and dendrites | Chemical synapse
44
Voltage gated channels
Axon hillock and axon | Action potential
45
Stimulus gated channel
Dendrites of sensory neurons | Action potential
46
All or nothing
Stimulus that triggers action potential has to reach threshold. If it does action potential is generate. If it doesn’t reach threshold action potential is not generated. This is possible in excitable membranes
47
Gray matter
Contains neurons, cell bodies, dendrites, and unmyelinated axons
48
White matter
Myelinated axons
49
Relative refractory period
The membrane can only respond to larger than normal stimuli because of hyper polarization.
50
Absolute refractory period
Can’t respond to any stimuli. Sodium channels are open and sodium is moving into cell.
51
Continuous propagation
Action potential spreads by depolarization in a series of steps in un myelinated axons. Takes longer due to more axon to cover and travel down
52
Salatory propagation
Action potential has to jump from node to node in myelinated axons. It’s much faster

A&P (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions