Brainscape's Knowledge GenomeTM

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


See full index

Bio 305 > Exam 2 > Flashcards

Exam 2 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

striated and voluntary

A

skeletal muscle

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

striated and involuntary

A

cardiac muscle

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

not striated and involuntary

A

smooth muscle

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

skeletal muscle cell

A

muscle fiber

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

bundles of thick and thin filaments

A

myofibrils

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

attached to bone and innervated by somatic motor neurons

A

skeletal muscle

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

attached to one another and controlled by autonomic nervous system

A

cardiac, smooth muscle

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

activation of force generating sites in cross bridges

A

contraction

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

deactivation of force generating sites

A

relaxation

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

composed of myoisn

A

thick filaments

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

made of 2 heavy chains and 4 light chains

A

myosin

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

attach thick and thin filaments

A

cross-bridges

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

made of actin, troponin, tropomyosin, nebuiln

A

thin filaments

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

play a role in thin filament assembely

A

nebulin

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

unit of repeating pattern of thick and thin filaments

A

sarcomere

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

lies between ends of a band of 2 adjacent sarcomeres; contain only thing filaments

A

I bands

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

narrow light band in the center of A band; contain only thick filaments

A

H zone

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

center of the H zone

A

m- line

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

boundary of each sarcomere; anchor end of each thin filament

A

z line

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

prevents excessive stretch and anchor thick filament together

A

titin

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

consist of a single motor neuron and all of the muscle fibers it innervates and thus controls

A

motor unit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

response of a singe muscle fiber to a brief stimulus

A

simple twitch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

time between reaching threshold and onset of contraction; AP spreads along muscle and allow calcium to be released from SR

A

latent period

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

modified cytoplasm outside SR

A

sacroplasm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

membrane of myocytes; capable of propagating AP to all sarcomere via transverse tubules

A

sarcolemma

26
Q

myosin cross bridges bind to actin and the corssbridges then flex to slide actin

A

contraction

27
Q

myosin filament bind to and move actin filaments; basis for contraction of stimulated skeletal, smooth and cardiac muscles

A

sliding filament theory

28
Q

bring action potential into skeletal muscle fibers so the wave of depolarization passes close to the SR stimulating the release of Ca+2

A

transverse tubules

29
Q

located on the SR and and allows Ca+2 calcium release into cytosol

A

ryanodine receptor

30
Q

binds to calcium causing conformational change in tropomyosin

A

troponin

31
Q

pulls tropomyosin of the myosin bind site of actin

A

calcium-troponin complex

32
Q

point of synaptic contact between the axon-terminal of a motor neuron and the muscle fibers it controls

A

neuromuscular junction

33
Q

force generated by muscle on object

A

tension

34
Q

force generated on the muscle

A

load

35
Q

muscle length stays the same tension increase rapidly and dissipates slowly

A

isometric contraction

36
Q

tension does not change; shortening occurs slowly only after taking up elastic tension and the relaxing muscle quickly returns to its resting length

A

isotonic contraction

37
Q

partial dissipation of elastic tension between subsequent stimuli

A

unfused tetanus

38
Q

no time for dissipation of elastic tension between rapidly reoccurring stimuli

A

fused tetanus

39
Q

actin filaments lack room to slide so little tension can be developed

A

short sacromere

40
Q

lots of actin and myosin overlap and plenty of room to slide

A

optimal length sacromere

41
Q

acting and myosin don’t overlap much so little tension developed

A

long sarcomere

42
Q

lose in ability to maintain tension despite stimulation

A

fatigue

43
Q

contract slowly and respond to repetitive stimulation without fatigue

A

slow-oxidative muscle; type 1

44
Q

responds quickly and to repetitive stimulation with intermediate rate of fatigue

A

fast-oxidative glycolytic muscle; type IIa

45
Q

used for quick burst of strong activity

A

fast glycolytic muscle; type IIb

46
Q

proportion of the body size dependent on how many interneurons it has

A

motor homunculus

47
Q

muscle acts as a single unit; synchronous contractions

A

single unit smooth muscle

48
Q

cells respond independently

A

multi-unit smooth muslce

49
Q

gab junctions

A

channel that allow current to flow form one cell to another

50
Q

plasma and cells

A

blood

51
Q

red blood cells

A

erthorocytes

52
Q

white blood cells

A

leukocytes

53
Q

blood clott cells

A

platelets

54
Q

gives blood its red color

A

hemoglobin

55
Q

separates two sides of heart

A

septum

56
Q

hear msucle

A

myocardium

57
Q

heart rate time stroke volume

A

cardiac out put

58
Q

determine the heart rate

A

auto-rhythmic pacemaker cells

59
Q

cells determine the stroke volume

A

contractile cells

60
Q

rapid opening of voltage gated sodium channels

A

depolarization phase

61
Q

opening of potassium channels

A

repolarization phase

62
Q

cluster of pacemaker cells

A

sinoatrial node

Bio 305 (2 decks)

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