chapter 10 - muscular tissue

Question 1

what type of muscle moves bones?

Answer 1

skeletal muscle

Question 2

is skeletal muscle voluntary or involuntary?

Answer 2

voluntary

Question 3

is skeletal muscle striated or non striated?

Answer 3

striated

Question 4

what type of muscle forms the heart wall?

Answer 4

cardiac muscle

Question 5

is cardiac muscle voluntary or involuntary?

Answer 5

involuntary

Question 6

what is found inside the walls of hollow organs, blood vessels, and airways?

Answer 6

smooth muscle

Question 7

is smooth muscle striated or non striated?

Answer 7

non striated

Question 8

is cardiac muscle striated or non striated?

Answer 8

striated

Question 9

is smooth muscle voluntary or involuntary?

Answer 9

involuntary

Question 10

what covers the muscle?

Answer 10

epimysium

Question 11

what covers the fascicle?

Answer 11

perimyisum

Question 12

what covers muscle fibers?

Answer 12

endomysium

Question 13

what is the plasma membrane covering the cell?

Answer 13

sarcolemma

Question 14

what is another name for cytoplasm?

Answer 14

sarcoplasm

Question 15

what is another name for plasma membrane?

Answer 15

sarcolemma

Question 16

what is a system of membraneous sacs that surround each myofibril?

Answer 16

sarcoplasmic reticulum

Question 17

what is the functional unity of the myofibril?

Answer 17

sarcomere

Question 18

what separates the sarcomeres?

Answer 18

Z disc

Question 19

what is the line in the center of the sarcomere?

Answer 19

M line

Question 20

what is the dark area containing thick and thin filaments?

Answer 20

A band

Question 21

what is the light area containing only thin filaments?

Answer 21

I band

Question 22

what is the center of A band that contains thick filaments only?

Answer 22

H zone

Question 23

what stage of the sliding filament mechanism does the cross bridge occur?

Answer 23

second stage

Question 24

what stage of the sliding filament mechanism does the power stroke occur?

Answer 24

third stage

Question 25

what is the sliding filament mechanism for?

Answer 25

muscle contraction

Question 26

what are the contractile proteins?

Answer 26

actin and myosin

Question 27

what are the regulatory proteins?

Answer 27

troponin and tropomyosin

Question 28

what is the synapse between a somatic motor neuron and a skeletal muscle fiber?

Answer 28

neuromuscular junction (NMJ)

Question 29

what is another name for muscle fiber?

Answer 29

muscle cell

Question 30

what is another name for neuron?

Answer 30

nerve cell

Question 31

what is the communication point between the neuron and other cells type?

Answer 31

synapse

Question 32

what is the chemical that the nerve releases that excites the muscle and causes contraction?

Answer 32

acetylcholine (ACh)

Question 33

what is another name for the synaptic space?

Answer 33

synaptic cleft

Question 34

what is composed of a motor neuron plus all of its muscle fibers that it innervates?

Answer 34

motor unit

Question 35

what type of muscle has a high myoglobin content?

Answer 35

red muscle

Question 36

what type of muscle has less myoglobin content?

Answer 36

white muscle

Question 37

what type of muscle fibers would be good for weight lifting?

Answer 37

fast glycolytic fibers (FG)

Question 38

what type of muscle fibers would be good for running a marathon?

Answer 38

slow oxidative fibers (SO)

Question 39

what type of muscle fibers would be good for walking or sprinting?

Answer 39

fast oxidative-glycolytic fibers (FOG)

Question 40

what type of muscle contraction is it when the muscle tension is great enough to overcome the resistance of the object to be moved?

Answer 40

concentric isotonic

Question 41

what type of muscle contraction is it when the muscle tension is less than the resistance?

Answer 41

eccentric isotonic

Question 42

what type of muscle contraction is the muscle shortening?

Answer 42

concentric isotonic

Question 43

what type of muscle contraction is the muscle lengthening?

Answer 43

eccentric isotonic

Question 44

what type of muscle contraction is it where the muscle force and resistance are equal?

Answer 44

isometric contraction

Question 45

which muscle contraction results in no movement?

Answer 45

isometric contraction

Question 46

what is the second stimulus that occurs before the muscle relaxes and the second contraction is stronger?

Answer 46

wave summation