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ZOOLOGY LAB > MUSCLE TISSUE > Flashcards

MUSCLE TISSUE Flashcards

1
Q

There are four characteristics associated

with muscle tissue:

A

Excitability
Contractility
Extensibility
Elasticity

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2
Q

it is when the tissue can receive and respond to stimulation

A

Excitability

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3
Q

it is when the tissue can shorten and thicken

A

Contractility

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4
Q

it is when the tissue can lengthen

A

Extensibility

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5
Q

it is when the tissue can return to its resting state

A

Elasticity

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6
Q

5 The characteristics of muscle tissue enable it
to perform some important functions, including:

A

Movement (both voluntarily and involuntarily)

Maintaining posture

Supporting soft tissues within body cavities

Guarding entrance and exits of the body

Maintaining body temperature

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7
Q

3 types of muscle tissue

A

skeletal mucle tissue
cardiac muscle tissue
smooth muscle tissue

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8
Q

they move or stabilize the position of the skeleton

A

skeletal muscle tissue

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9
Q

they guard entrances and exits to the digestive, respiratory, anf urinary tracts, genrates heat, and protects internal organs

A

skeletal muscle tissue

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10
Q

6 Skeletal Muscle Tissue features and characteristics:

A

Fibers are multinucleated with peripheral nuclei

Actin and myosin filaments form distinct cross- striation patterns

Muscle is surrounded by connective tissue epimysium

Muscle fascicles surrounded by connective tissue perimysium

Each muscle fiber surrounded by connective tissue endomysium

Voluntary muscle under conscious control

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11
Q

are multinucleated with peripheral nuclei

A

Fibers

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12
Q

filaments form distinct cross- striation patterns

A

Actin and myosin

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13
Q

Muscle is surrounded by connective tissue

A

epimysium

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14
Q

Muscle fascicles surrounded by connective tissue

A

perimysium

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15
Q

Each muscle fiber surrounded by connective tissue

A

endomysium

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16
Q

muscle under conscious control

A

Voluntary

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17
Q

function in pairs to
bring about the coordinated
movements of the limbs, trunk,
jaws, eyeballs, etc.

A

Skeletal muscles

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18
Q

are directly
involved in the breathing process.

A

Skeletal muscles

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19
Q

it moves food, urine, and reproductive tract secretions

A

smooth muscle tissue

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20
Q

it controls diameter of respiratory passageways and regulates diamter of blood vessels

A

smooth muscle tissue

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21
Q

Smooth Muscle Tissue features and characteristics:

A

Found in hollow organs and blood vessels

Fibers are fusiform in shape and contain single nuclei

Each cell is filled with a specialized cytoplasm, the
sarcoplasm and is surrounded by a thin cell membrane,
the sarcolemma.
Contain contractile actin and myosin filaments; however,
they are not arranged in the regular, cross-striated
patterns that are visible in both the skeletal and cardiac
muscle fibers

As a result, these muscle appear smooth or nonstriated

Smooth muscle fibers are also involuntary muscles and
are, therefore, under autonomic nervous system and
hormonal control

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22
Q

are found in hollow organs and blood vessels

A

Smooth Muscle Tissue

23
Q

Fibers are fusiform in shape and contain single nuclei

A

Smooth Muscle Tissue

24
Q

smooth muscle is in what shape?

A

fusiform

25
Q

Each cell is filled with a specialized cytoplasm, the
sarcoplasm and is surrounded by a thin cell membrane,
the sarcolemma.

A

Smooth Muscle Tissue

26
Q

what surrounds the smooth muscle tissue

A

sacroplasm
sarcolemma

27
Q

a thin cell membrane

A

sarcolemma

28
Q

they are not arranged in the regular, cross-striated
patterns that are visible in both the skeletal and cardiac
muscle fibers

A

Smooth Muscle Tissue

29
Q

smooth muscle tissues appear — or —-

A

smooth or nonstriated

30
Q

are also involuntary muscles and
are, therefore, under autonomic nervous system and
hormonal control

A

Smooth muscle fibers

31
Q

controls slow, involuntary
movements such as the contraction of the
smooth muscle tissue in the walls of the
stomach and intestines.

A

Smooth muscle

32
Q

The muscle of the arteries contracts and
relaxes to regulate the ——- and the ———

A

blood pressure and
the flow of blood.

33
Q

it moves blood and maintain blood pressure

A

cardiac muscle tissue

34
Q

Primarily located in the walls and septa of the heart and in the walls of
the large vessels attached to the heart(aorta and pulmonary trunk)

A

Cardiac Muscle Tissue

35
Q

exhibit distinct cross-striations as a result of the arrangement of actin and myosin filaments similar to skeletal muscles

A

Cardiac Muscle Tissue

36
Q

Transmission electron microscopy reveals similar A bands, I bands, Z lines, and repeating sacromere units

A

Cardiac Muscle Tissue

37
Q

Exhibits only one or two central nuclei, are shorter, and are branched

A

Cardiac Muscle Tissue

38
Q

terminal ends of adjacent cardiac
muscle fibers show characteristic and
dense-staining, end-to-end junctional
complexes called

A

intercalated disks.

39
Q

Located in the intercalated disks are
the

A

gap junctions

40
Q

enable ionic communication and continuity between adjacent cardiac muscle fibers.

A

gap junctions

41
Q

Exhibit autorhythmicity and
spontaneously generate stimuli

A

Cardiac Muscle Tissue

42
Q

plays the most
important role in the contraction of the
atria and ventricles of the heart.

A

Cardiac muscle tissue

43
Q

It causes the rhythmical beating of the
heart, circulating the blood and its
contents throughout the body as a
consequence.

A

Cardiac muscle tissue

44
Q

has spindle-shaped, nonstrited uninucleated fibers

A

smooth muscle tissue

45
Q

it occurs in walls of internal organs

A

smooth muscle tissue

46
Q

these muscles are involuntary

A

smooth muscle tissue
and
cardiac muscle tissue

47
Q

has striated, branched, uninucleated fibers

A

cardiac muscle

48
Q

it occurs in walls of heart

A

cardiac muscle

49
Q

has striated, tubular, multinucleated fibers

A

skeletal muscle tissues

50
Q

is usually attached to skeleton

A

skeletal muscle tissue

51
Q

it is voluntary

A

skeletal muscle

52
Q

single, very long clindrical multinucleate cells with obvious striations

A

skeletal muscle tissue

53
Q

has branching chains of cells; uni- or binucleate striations

A

cardiac muscle tissue

54
Q

are single fusiform, uninucleate; no striations

A

smooth muscle tissue

ZOOLOGY LAB (7 decks)

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