MUSCLE TISSUE

Question 1

There are four characteristics associated

with muscle tissue:

Answer 1

Excitability
Contractility
Extensibility
Elasticity

Question 2

it is when the tissue can receive and respond to stimulation

Answer 2

Excitability

Question 3

it is when the tissue can shorten and thicken

Answer 3

Contractility

Question 4

it is when the tissue can lengthen

Answer 4

Extensibility

Question 5

it is when the tissue can return to its resting state

Answer 5

Elasticity

Question 6

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

Answer 6

Movement (both voluntarily and involuntarily)

Maintaining posture

Supporting soft tissues within body cavities

Guarding entrance and exits of the body

Maintaining body temperature

Question 7

3 types of muscle tissue

Answer 7

skeletal mucle tissue
cardiac muscle tissue
smooth muscle tissue

Question 8

they move or stabilize the position of the skeleton

Answer 8

skeletal muscle tissue

Question 9

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

Answer 9

skeletal muscle tissue

Question 10

6 Skeletal Muscle Tissue features and characteristics:

Answer 10

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

Question 11

are multinucleated with peripheral nuclei

Answer 11

Fibers

Question 12

filaments form distinct cross- striation patterns

Answer 12

Actin and myosin

Question 13

Muscle is surrounded by connective tissue

Answer 13

epimysium

Question 14

Muscle fascicles surrounded by connective tissue

Answer 14

perimysium

Question 15

Each muscle fiber surrounded by connective tissue

Answer 15

endomysium

Question 16

muscle under conscious control

Answer 16

Voluntary

Question 17

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

Answer 17

Skeletal muscles

Question 18

are directly
involved in the breathing process.

Answer 18

Skeletal muscles

Question 19

it moves food, urine, and reproductive tract secretions

Answer 19

smooth muscle tissue

Question 20

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

Answer 20

smooth muscle tissue

Question 21

Smooth Muscle Tissue features and characteristics:

Answer 21

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

Question 22

are found in hollow organs and blood vessels

Answer 22

Smooth Muscle Tissue

Question 23

Fibers are fusiform in shape and contain single nuclei

Answer 23

Smooth Muscle Tissue

Question 24

smooth muscle is in what shape?

Answer 24

fusiform

Question 25

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

Answer 25

Smooth Muscle Tissue

Question 26

what surrounds the smooth muscle tissue

Answer 26

sacroplasm sarcolemma

Question 27

a thin cell membrane

Answer 27

sarcolemma

Question 28

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

Answer 28

Smooth Muscle Tissue

Question 29

smooth muscle tissues appear --- or ----

Answer 29

smooth or nonstriated

Question 30

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

Answer 30

Smooth muscle fibers

Question 31

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

Answer 31

Smooth muscle

Question 32

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

Answer 32

blood pressure and the flow of blood.

Question 33

it moves blood and maintain blood pressure

Answer 33

cardiac muscle tissue

Question 34

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)

Answer 34

Cardiac Muscle Tissue

Question 35

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

Answer 35

Cardiac Muscle Tissue

Question 36

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

Answer 36

Cardiac Muscle Tissue

Question 37

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

Answer 37

Cardiac Muscle Tissue

Question 38

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

Answer 38

intercalated disks.

Question 39

Located in the intercalated disks are the

Answer 39

gap junctions

Question 40

enable ionic communication and continuity between adjacent cardiac muscle fibers.

Answer 40

gap junctions

Question 41

Exhibit autorhythmicity and spontaneously generate stimuli

Answer 41

Cardiac Muscle Tissue

Question 42

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

Answer 42

Cardiac muscle tissue

Question 43

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

Answer 43

Cardiac muscle tissue

Question 44

has spindle-shaped, nonstrited uninucleated fibers

Answer 44

smooth muscle tissue

Question 45

it occurs in walls of internal organs

Answer 45

smooth muscle tissue

Question 46

these muscles are involuntary

Answer 46

smooth muscle tissue and cardiac muscle tissue

Question 47

has striated, branched, uninucleated fibers

Answer 47

cardiac muscle

Question 48

it occurs in walls of heart

Answer 48

cardiac muscle

Question 49

has striated, tubular, multinucleated fibers

Answer 49

skeletal muscle tissues

Question 50

is usually attached to skeleton

Answer 50

skeletal muscle tissue

Question 51

it is voluntary

Answer 51

skeletal muscle

Question 52

single, very long clindrical multinucleate cells with obvious striations

Answer 52

skeletal muscle tissue

Question 53

has branching chains of cells; uni- or binucleate striations

Answer 53

cardiac muscle tissue

Question 54

are single fusiform, uninucleate; no striations

Answer 54

smooth muscle tissue