Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy > Muscle > Flashcards

Muscle Flashcards

1
Q

What are neurons

A

Electrically excitable cells that make up the nervous system

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

What are glea cells

A

Supporting cells That help with nurves

nursement
insulation
Ionic regulation of extracellular fluid

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

What types of glial cells Are found in the CNS

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

What types of glee cells are in the PNS

A

Schwann cells
( Surround the axon’s to form the Mylin sheath)

Satellite cells
Surround the cell bodies and help regulate the chemical environment

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

3 functional classes of neurons

A

Sensory.(afferent)

Motor ( Efferent)

Internurons

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

Function of Effrent Neurons

A

Recives signals from the CNS to send to effectors such as muscles and glands

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

Function of Is afferent neurons

A

To retrieve signals from receptors to send the CNS

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

What is membrane potential

A

The difference in electrical charge between the inside and outside of the cell

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

What is depolarization

A

When membrane potential becomes less negative

The upward line on the action potential chart

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

What is hyperpolarization

A

When the membrane potential becomes more negative

Line below resting potential on action potential chart

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

What causes the membrane to become hyper polarized

A

When potassium channels in the neuronal membrane open

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

When do Voltage gated sodium channels open

A

Open when the neuron depolarizes to the threshold voltage

Initiates the action potential

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

Is what are the phases of an action potential

A

Resting state
Depolarization
repoleraization
hyperpolarization

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

describe resting state

A

Both voltage gated channels are closed

Potassium leak channels are open

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

Describe The State of depolarization

A

Is wind voltage gated sodium channels are open

When sodium ion’s enter the cell

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

Describe the state of repolerization

A

When voltage gated sodium channels Are inactive

When voltage gated potassium channels channels are open

When potassium Leaves Is cell

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

Describe the state of hyperpolarization

A

when potassium Permeability is higher than at rest

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

What Are the types of Nuro transmitters

A

Biogenic amines

Acetylcholine

Amino acids

Nuropeptides

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

1st step of action. Potential

A

Action potential travels down the axon To the synapse

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

2nd step of action potential

A

Acetylcholine Is released into the synaptic cleft

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

3rd step in action potential

A

Acetylcholine binds to receptors on sarcolemma

22
Q

4th step in action potential

A

Channel opens and allows ions to diffuse across the muscle cell.

Na ions go in. K ions go out

23
Q

5th step in action potential

A

Sarcolemma depolerizes

24
Q

What happens during depolerization

A

Voltage gated Na channels open and trigger action potential

25
Q

6th step in action potential

A

Action potential travels along the sarcolema and down T tubules

26
Q

7th step in action potential

A

Electrical signals gets to sarcoplasmic reticulum and open up calcium channels.
Calcium ions then diffuse out of the SR

27
Q

8th step in action potential

A

Calcium ions bonds to troponin

On the thin myofilaments

28
Q

9th step in action potential

A

Tropomyosin shifts positions and active sites on actin are now exposed

29
Q

Sensory and motor subdivisions make up?

A

The peripheral nervous system

30
Q

Multipolar neurons are made of

A

One axon and multiple dendrites

31
Q

Bipolar neurons are made of

A

One axon and one dendrite

32
Q

Unipolar neurons are made of

A

A single process

33
Q

Anaxonic neurons are made of

A

No axon and multiple dendrites

34
Q

The sympathetic and parasympathetic nervous system makes up what?

A

The visceral motor

Autonomic

35
Q

What is the most common neuron structure

A

Multipolar

36
Q

Microglia

A

Found in CNS phagocytize microorganisms

37
Q

Ependymal cells

A

Found in the CNS
Line cavities of the brain and spinal cord.
Secreate CSF

38
Q

Satellite cells

A

Provide electrical insulation and regulate the chemical environment

Surround somatic of nurons
Found in PNS

39
Q

Schwan cells

A

Found in PNS

Form nurilema (myalin) around all PNS fibers.

Aid in regeneration of damaged neve fibers

40
Q

Neuroglia

A

Protect nurons and help them function

Bind nurons together and provide supportive scaffold

41
Q

Oligodendracytes

A

Form myelin in brain and spinal cord

42
Q

Atrocytes

A

Cover brain surface and nonsynaptic regions of nurons form supportive framework in CNS

43
Q

What influences the speed of nerve signal conduction

A

diameter of axon

Presence of Myelin

44
Q

What iron has the greatest influence on the resting membrane potential of most neurons

A

Potassium

45
Q

What are properties of action potentials

A

All or none

non decremental

Self propagating

46
Q

What are the events in order during a single action potential

A

local potential depolarizes membrane

Threshold is reached

Depolarization spike

Repolorization

hyperpolarization

47
Q

Was the resting membrane potential of a neuron

A

-70 mV

48
Q

What ion has the greatest influence on the resting membrane potential

A

K+ ions

49
Q

Why do K+ ions have the greatest effect on the RMP

A

Because they are the most permeable ions to the membrane

50
Q

Where’s the voltage threshold

A

Is the minimum needed to open voltage gated channels

-55mV

51
Q

After acetylcholine diffuses across the syneptic Is clessed where does it find to ligand gated channel’s

A

Binds to the sarcolemma

Anatomy (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions