muscle tissue

Question 1

what is unique about muscle tissue

Answer 1

it can transform chemical energy (ATP) into directed mechanical energy, which can extert force for movement

Question 2

what are the 3 types of muscle tissue

Answer 2

1. skeletal
2. cardiac
3. smooth

Question 3

what 2 kind of muscle cells are elongated and considered muscle fibers

Answer 3

1. skeletal
2. smooth

Question 4

where is skeletal muscle tissue found

Answer 4

attached to bones and skin

Question 5

does skeletal muscle tissue have striations

Answer 5

yes.

Question 6

is skeletal muscle tissue considered voluntary

Answer 6

yes.

Question 7

where is cardiac muscle tissue found

Answer 7

the heart

Question 8

what unique featured does cardiac muscle tissue have

Answer 8

• striations
• branched
• intercillated discs

Question 9

is cardiac muscle voluntary

Answer 9

no. it is involuntary

Question 10

where is smooth muscle tissue found

Answer 10

in visceral organs

Question 11

what are examples of visceral organs that contain smooth muscle tissue

Answer 11

• stomach
• urinary bladder
• airways

Question 12

is smooth muscle tissue striated

Answer 12

no. it is not striated

Question 13

is smooth muscle tissue voluntary

Answer 13

no. it is involutary

Question 14

what is the purpose of flexors

Answer 14

bending

Question 15

what is the purpose of extensors

Answer 15

straightening

Question 16

can muscles generate force without being shortened

Answer 16

no. it is impossible for muscles to generate force without them being shortened

Question 17

what are the 4 main characteristics of all muscles

Answer 17

1. excitablility
2. contractability
3. extensibility
4. elasticity

Question 18

what is excitability in muscles

Answer 18

the ability to respond to stimuli

Question 19

what is the stimuli that causes excitability in muscles

Answer 19

nerve impulses

Question 20

what is contractability in muscles

Answer 20

when the muscle shortens from being stimulated

Question 21

what is extensability in muscles

Answer 21

when muscles are stretched

Question 22

what is elasticity in muscles

Answer 22

the muscle’s ability to recoil to its resting length

Question 23

what are the 4 important functions of muscles

Answer 23

1. produce movement
2. maintain posture and body position
3. stabilize joints
4. generate heat as they contract

Question 24

what is an example of muscles generating heat through contraction

Answer 24

shivering

Question 25

what is the smallest contractile unit of muscle fibers

Answer 25

sarcomere

Question 26

what are myofilaments

Answer 26

an orderly arrangement of actin and myosin myofilaments within a sarcomere

Question 27

are actin or myosin myofilaments thin

Answer 27

actin

Question 28

are actin or myosin myofilaments thick

Answer 28

myosin

Question 29

what causes the light striations

Answer 29

the i band

Question 30

does the i band have actin, myosin, or both

Answer 30

only actin

Question 31

what is the a band

Answer 31

the entire span of myosin

Question 32

what causes dark striations

Answer 32

the a band

Question 33

what is the z disc

Answer 33

the zig zag line at the center of the i band

Question 34

what is the M line

Answer 34

the line that goes through the center of the A band or H zone

Question 35

what is the H zone

Answer 35

the area of the sarcomere that only contains myosin