Muscle Tissue

Question 1

Single nucleus

Answer 1

Smooth muscle

Question 2

Multiple nuclei

Answer 2

skeletal muscle

Question 3

Visible striations

Answer 3

skeletal and cardiac muscle

Question 4

No visible striations

Answer 4

smooth muscle

Question 5

Voluntary

Answer 5

skeletal muscle

Question 6

Involuntary

Answer 6

cardiac and smooth muscle

Question 7

Muscle tissue has all of the following functions EXCEPT to help us:

Answer 7

protects organs like the brain

Question 8

The term that refers to muscle’s ability to shorten is:

Answer 8

contractility

Question 9

Muscle returns to its original length after stretching, so it is:

Answer 9

elastic

Question 10

Because muscle responds to stimuli, we say it is:

Answer 10

excitable

Question 11

The more movable attachment of a muscle to a bone is the:

Answer 11

insertion

Question 12

The less movable attachment of a muscle to a bone is the:

Answer 12

origin

Question 13

The least common way for a muscle to attach to a bone is through:

Answer 13

a direct attachment

Question 14

Flattened sheets of connective tissue that connect muscles to bones or other muscles are called:

Answer 14

aponeuroses

Question 15

True or False: Muscles are avascular and non-innervated.

Answer 15

False

Question 16

The unit that extends from one Z disc to the next is the:

Answer 16

sarcomere

Question 17

The thick filaments with heads are called

Answer 17

myosin

Question 18

What initiates sliding of the filaments?

Answer 18

binding of Ca+2 to actin

Question 19

What structure in muscle cells stores calcium?

Answer 19

sarcoplasmic reticulum

Question 20

Transverse tubules are extensions of the:

Answer 20

sarcolemma

Question 21

Which of these is part of the sarcoplasmic reticulum?

Answer 21

terminal cisterna

Question 22

What part of a muscle shortens?

Answer 22

sarcomeres

Question 23

True or False: As a muscle contracts, the actin and myosin myofilaments change length.

Answer 23

False

Question 24

What causes actin and myosin to move past each other?

Answer 24

swiveling of myosin heads

Question 25

Microscopic Structure of Skeletal Muscle Diagram

Answer 25

Look at homework on page 2

Question 26

Contract quickly

Answer 26

fast glycolytic fibers

Question 27

Contract slowly.

Answer 27

slow oxidative fibers

Question 28

Get ATP from aerobic metabolism.

Answer 28

slow oxidative fibers

Question 29

Get ATP from anaerobic glycolysis.

Answer 29

fast glycolytic fibers

Question 30

Have lots of glycogen.

Answer 30

fast glycolytic fibers

Question 31

Have lots of myoglobin.

Answer 31

slow oxidative fibers

Question 32

Few capillaries.

Answer 32

fast glycolytic fibers

Question 33

Lots of capillaries.

Answer 33

slow oxidative fibers

Question 34

Resist fatigue.

Answer 34

slow oxidative fibers

Question 35

Fatigue quickly.

Answer 35

fast glycolytic fibers

Question 36

Pale in color.

Answer 36

fast glycolytic fibers

Question 37

Red in color.

Answer 37

slow oxidative fibers

Question 38

Larger diameter.

Answer 38

fast glycolytic fibers

Question 39

Smaller diameter.

Answer 39

slow oxidative fibers

Question 40

Less powerfull.

Answer 40

slow oxidative fibers

Question 41

More powerful.

Answer 41

fast glycolytic fibers

Question 42

Rapidly pumping weights

Answer 42

fast glycolytic fibers

Question 43

Standing at attention for a long period of time

Answer 43

slow oxidative fibers

Question 44

Walking at a moderate pace

Answer 44

fast oxidative fibers (intermediate)

Question 45

Connected by intercalated discs

Answer 45

cardiac muscle

Question 46

Each cell is innervated

Answer 46

skeletal muscle

Question 47

Rhythmically contract without innervation

Answer 47

cardiac muscle

Question 48

Located in internal organs and blood | vessels

Answer 48

smooth muscle

Question 49

Cells are long cylinders that run length of organ

Answer 49

skeletal muscle

Question 50

Cells form a branching network

Answer 50

cardiac muscle

Question 51

Often arranged in circular and longitudinal layers

Answer 51

smooth muscle

Question 52

Cells are connected by gap junctions

Answer 52

cardiac muscle and smooth muscle

Question 53

Condition that occurs when muscle tissue is crushed, causing myoglobin to enter the bloodstream and clog the kidneys, resulting in kidney failure and ultimately heart failure.

Answer 53

Rhabdomyolysis

Question 54

A chronic pain disorder of unknown origin with symptoms of severe musculoskeletal pain, fatigue, sleep abnormalities, and headache. Not primarily caused by muscle problems.

Answer 54

Fibromyalgia

Question 55

A condition in which tightened bands of muscle twitch, causing pain, when the skin over them is touched.

Answer 55

Myofascial pain syndrome

Question 56

Decrease in muscle mass and strength that often occurs with age.

Answer 56

Sarcopenia

Question 57

A group of inherited muscle-destroying diseases that generally appear in childhood; one form is due to the absence of the muscle protein dystropin, which links the muscle cytoskeleton to the extracellular matrix.

Answer 57

Muscular dystrophy