Muscle

Question 1

Muscle tissues are highly specialized to do what

Answer 1

contract and shorten to produce movement

Question 2

how many types of muscle tissues are there name them

Answer 2

there are 3, skeletal muscles, cardiac muscles, and smooth muscles

Question 3

skeletal muscles tissue is packaged by what tissue

Answer 3

connective tissue

Question 4

connective tissue packaged skeletal muscles tissue into what organs

Answer 4

skeletal muscles

Question 5

skeletal muscles are attached to what

Answer 5

the skeleton

Question 6

we can control skeletal muscles how

Answer 6

voluntarily consciously

Question 7

these skeletal muscles form what

Answer 7

the flesh of the body or the so called muscular system

Question 8

when skeletal muscles contract they do what

Answer 8

pull on bones or skin

Question 9

the contraction of these skeletal muscles results in what

Answer 9

gross body movement or facial expressions

Question 10

describe cells of skeletal muscles

Answer 10

The cells of skeletal muscle are long, cylindrical, multinucleate, and they have obvious striations (stripes).

Question 11

skeletal muscle cells are uni or multi nucleated

Answer 11

multi

Question 12

skeletal muscle cells are striped or no

Answer 12

yes they are striped

Question 13

skeletal muscles are elongated how does that help their function

Answer 13

provide a long axis for contraction

Question 14

skeletal muscles are often called what

Answer 14

muscle fibers

Question 15

cardiac muscle is found only in the

Answer 15

heart

Question 16

when cardiac muscle contracts what happens

Answer 16

As it contracts, the heart acts as a pump and propels blood through the blood vessels.

Question 17

does cardiac have stripes

Answer 17

yes it has stripes

Question 18

cardiac cells are uni or multi nucleated

Answer 18

uni nucleated

Question 19

describe cardiac cells

Answer 19

uni nucleated relatively short, branching cells that

fit tightly together (like clasped fingers) at junctions called intercalated discs.

Question 20

what is the name of the junction that cardiac cells fit in

Answer 20

intercalated discs

Question 21

describe intercalated discs

Answer 21

contain gap junctions that allow ions to pass

freely from cell to cell

Question 22

the intercalated cells allowing that ties the cardiac cells to a what

Answer 22

This ties the cardiac cells into a functional syncytium resulting in rapid conduction of the exciting electrical impulse across the heart.

Question 23

what does the functional syncytium result in

Answer 23

rapid conduction of the exciting electrical impulse across the heart

Question 24

how are cardiac muscles controlled

Answer 24

Cardiac muscle is under involuntary control, which means that we cannot consciously control the activity of the heart.

Question 25

why is it called smooth muscles tissue

Answer 25

no striations are visible

Question 26

describe cells of smooth muscle tissue

Answer 26

The individual cells have a single nucleus and are spindle-shaped (pointed at each end)

Question 27

smooth muscles cells are uni or multi nucleated

Answer 27

single nucleus

Question 28

where is smooth muscles found, give examples

Answer 28

Smooth muscle is found in the walls of hollow organs such as the stomach, uterus, and blood vessels.

Question 29

As smooth muscle in its walls contracts, what happens to the cavity of the internal organ

Answer 29

the cavity of an organ alternately becomes smaller (constricts when smooth muscle contracts) or enlarges (dilates when smooth muscle relaxes) so that substances are propelled through the organ along a specific pathway.

Question 30

smooth muscle: | the cavity constricts when what

Answer 30

smooth muscle contracts

Question 31

smooth muscle: | the cavity dilates when what

Answer 31

smooth muscle relaxes

Question 32

the contraction and relaxation of smooth muscle allows for what

Answer 32

that substances are propelled through the organ | along a specific pathway

Question 33

in comparison to other smooth muscle contracts much more what

Answer 33

slowly

Question 34

Peristalsis

Answer 34

a wavelike motion that keeps food moving through the small intestine, is typical of its activity