Deck 10: Skeletal Muscle Tissue

Question 1

Figure 10.1
Use the diagram above to answer the following questions.
Identify the letter that indicates the muscle fiber.

A) A
B) B
C) C
D) D
E) E

Answer 1

E

Question 2

Figure 10.2
Use the diagram above to answer the following questions.
This structure is composed of thick (myosin) filaments.

A) A
B) B
C) C
D) D
E) E

Answer 2

E

Question 3

A cell of this type of muscle is striated and can be uninucleated or binucleated.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Answer 3

C

Question 4

Both cardiac muscle and this type of muscle are called involuntary.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 5

This type of muscle includes the fast oxidative fibers.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 6

Figure 10.2
Use the diagram above to answer the following questions.
This structure is the basic unit of contraction.

A) A
B) B
C) C
D) D
E) E

Question 7

Figure 10.2
Use the diagram above to answer the following questions.
Identify the letter that indicates the titin filament.

A) A
B) B
C) C
D) D
E) E

Question 8

Figure 10.1
Use the diagram above to answer the following questions.
Identify the letter that indicates the epimysium.

A) A
B) B
C) C
D) D
E) E

Question 9

Figure 10.1
Use the diagram above to answer the following questions.
Identify the letter that indicates the endomysium.

A) A
B) B
C) C
D) D
E) E

Question 10

Figure 10.1
Use the diagram above to answer the following questions.
This indicates an individual fascicle.

A) A
B) B
C) C
D) D
E) E

Question 11

Figure 10.2
Use the diagram above to answer the following questions.
Identify the letter that indicates the I band.

A) A
B) B
C) C
D) D
E) E

Question 12

The "cells" of both skeletal muscle and this muscle type are correctly called muscle fibers.

A) serous muscle
B) smooth muscle
C) cardiac muscle

Question 13

This type of muscle is found in large vessels leading to and from the heart.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 14

This type of muscle is found in the heart.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 15

This type of muscle makes up the walls of hollow organs, such as the stomach and uterus.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 16

Figure 10.2
Use the diagram above to answer the following questions.
This structure is composed of thin (actin) filaments.

A) A
B) B
C) C
D) D
E) E

Question 17

Figure 10.1
Use the diagram above to answer the following questions.
This structure is composed entirely of dense regular connective tissue and connects bone to muscle.

A) A
B) B
C) C
D) D
E) E

Question 18

This type of muscle contains intercalated discs.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 19

This type of muscle attaches to bone, but may also attach to skin, cartilage, fascia or a raphe.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 20

Both single-unit smooth muscle and this type of muscle have gap junctions.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 21

An aponeurosis

A) connects a muscle to underlying structures through a flat sheet or web.
B) consists of a neuron and all the muscle fibers it innervates.
C) is a type of direct attachment of muscle to bone.
D) is the junction between the axon terminus of a neuron to an individual muscle fiber.

Question 22

A common characteristic of the three types of muscle tissue is that

A) they all have striations.
B) contraction is triggered by the release of calcium.
C) they all contain sarcomeres.
D) they can all use aerobic and anaerobic methods to utilize energy.

Question 23

Eccentric contraction

A) generates force as the muscle lengthens.
B) generates force without changing the length of the muscle.
C) pulls the insertion toward the origin.
D) shortens the muscle.

Question 24

Which of these is not in direct contact with thick myofilaments?

A) myosin
B) actin
C) ATPase
D) synaptic vesicles

Question 25

Much of the natural elasticity of skeletal muscle tissue is provided by

A) actin.
B) myosin.
C) tendons.
D) connective tissue sheaths.

Question 26

Which of the following correctly defines a triad of the sarcomere?

A) a T tubule and two adjacent terminal cisterns
B) actin, myosin, and titin
C) an axon terminal, synaptic cleft, and sarcolemma
D) actin, troponin, and tropomyosin

Question 27

Which statement about muscle attachments is False?

A) An insertion can be at either attachment point of a muscle, depending on body position and the movement being performed.
B) At least one joint is present between an origin and insertion.
C) Insertions are usually distal to the origin.
D) Upon contraction, the origin is pulled toward the insertion.

Question 28

Delayed-onset muscle soreness is caused by

A) accumulation of lactic acid.
B) depletion of ATP during prolonged activity.
C) microscopic tears and resulting inflammation.
D) overnight cramps that occur after strenuous exercise.

Question 29

The embryonic origin of muscle tissue is from

A) endoderm.
B) mesoderm.
C) ectoderm.
D) epidermis.

Question 30

This type of muscle may be affected by rhabdomyolysis.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 31

Contractions of these muscles are under voluntary control.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 32

The sarcoplasmic reticulum (SR) stores

A) calcium.
B) sodium.
C) ATPase.
D) myosin.

Question 33

As skeletal muscles enlarge in a weight lifter, all of the following occur except

A) muscle cells divide mitotically.
B) muscle cells grow larger.
C) myofilaments become more abundant in the muscle cells.
D) myofibrils become more abundant in the muscle cells.

Question 34

Sarcoplasmic reticulum lies

A) between fibers but in myofilaments.
B) between myofibrils but in fibers.
C) between fascicles but outside fibers.
D) between muscles but in myofilaments.

Question 35

This type of muscle composes the largest share of muscle weight in the human body.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 36

Sarcopenia is

A) the loss of muscle mass with age.
B) a decrease in the muscle's need for energy.
C) a decrease in the amount of actin in the muscle fiber.
D) a decrease in the amount of sarcolemma in the muscle fiber.

Question 37

Titin

A) connects myosin to actin.
B) forms the Z disk to which actin attaches.
C) limits the degree to which a muscle may contract.
D) prevents a muscle from being overstretched.

Question 38

The biceps and the deltoid muscle are of this type.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 39

Visceral muscle refers to

A) skeletal muscle and cardiac muscle.
B) cardiac muscle and smooth muscle.
C) skeletal muscle and smooth muscle.
D) smooth muscle only.

Question 40

This type of muscle, along with cardiac muscle, is called visceral muscle.

A) skeletal muscle
B) smooth muscle
C) cardiac muscle

Question 41

The ability of the sarcolemma of muscle cells to conduct an impulse is an example of

A) contractility.
B) excitability.
C) extensibility.
D) elasticity.

Question 42

Which region of the sarcomere does not change in length during contraction?

A) A band
B) H zone
C) I band
D) Z disk to Z disk

Question 43

With intense resistance training,

A) fast glycolytic fibers can convert to fast oxidative fibers.
B) fast oxidative fibers can convert to fast glycolytic fibers.
C) slow oxidative fibers can convert to fast glycolytic fibers.
D) slow oxidative fibers can convert to fast oxidative fibers.

Question 44

Which protein strengthens the sarcolemma by connecting the cytoskeleton with the extracellular matrix?

A) actin
B) dystrophin
C) myosin
D) titin

Question 45

The area that contains no thin filaments is known as the

A) H zone.
B) I band.
C) intercalated disc.
D) A band.

Question 46

The type of attachment in which the muscle fibers seem to attach directly to a bone is

A) a tendon.
B) an aponeurosis.
C) an insertion.
D) a fleshy attachment.

Question 47

Of the various types of skeletal muscle fibers, the type with the most mitochondria is

A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.

Question 48

The sleevelike tubular network within skeletal muscle cells is the

A) sarcoplasmic reticulum.
B) rough endoplasmic reticulum.
C) myofibrils.
D) T tubules.

Question 49

Myofascial pain syndrome is best described as a condition in which

A) microscopic tears in muscle fibers result in swelling and inflammation.
B) muscle fibers degenerate because of chronic leakage of extracellular calcium.
C) muscle fibers contract when the skin superficial to them is stroked.
D) pain occurs in at least 11 of 18 standardized points across the body.

Question 50

The characteristic of muscle tissue that results more from its connective tissue components than from its muscle cells is

A) contractility.
B) excitability.
C) extensibility.
D) elasticity.

Question 51

When the distance between two adjacent Z disks grows shorter, the muscle fiber is experiencing

A) concentric contraction.
B) eccentric contraction.
C) isometric contraction.
D) relaxation.

Question 52

Of the various types of skeletal muscle fibers, the type containing the most glycogen granules is

A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.

Question 53

Age-related loss of muscle mass may be influenced by all of these except:

A) an increase in the relative proportion of connective tissue to number of muscle fibers.
B) decrease in the level of testosterone.
C) degeneration of muscle fibers because of accumulation of calcium in the sarcoplasm.
D) exhaustion of the supply of muscle satellite cells.

Question 54

In limbs, the insertions of muscles almost always lie ________ to their origins.

A) proximal
B) distal
C) lateral
D) posterior

Question 55

Which type of muscle fiber has no myofibrils?

A) skeletal
B) smooth
C) cardiac
D) red

Question 56

Which type of muscle fiber has caveolae but no T tubules?

A) skeletal
B) cardiac
C) smooth
D) white

Question 57

Myoglobin

A) binds and stores oxygen for ATP production.
B) is found within the T tubules.
C) is released by the sarcoplasmic reticulum.
D) provides energy for contraction.

Question 58

The only muscle cells that branch are ________ muscle cells.

A) skeletal
B) smooth
C) cardiac
D) red

Question 59

Of the various types of skeletal muscle fibers, the type that produces the most power is

A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.

Question 60

Acetylcholine

A) binds to the myosin head, enabling it to form cross-bridges with actin.
B) binds to the sarcolemma and initiates an impulse in the muscle fiber.
C) breaks down the neurotransmitter that activates muscle fibers.
D) is released from the sarcoplasmic reticulum and binds to actin.

Question 61

Muscle tissue can be characterized as being excitable and elastic, but not extensible.

Question 62

After a muscle fiber has contracted, the calcium

A) is destroyed.
B) is chemically bound to the myofilaments.
C) is secreted by the Golgi apparatus.
D) is actively transported into the sarcoplasmic reticulum.

Question 63

Of the three classes of muscle cells, the only one in which the nuclei lie peripherally instead of centrally is

A) skeletal.
B) cardiac.
C) smooth.
D) visceral.

Question 64

In striated muscle, the I band is where

A) only thick filaments occur.
B) thin filaments occur.
C) H zones occur.
D) thick and thin filaments occur.

Question 65

Of the various types of skeletal muscle fibers, the ones supplied by the most capillaries are

A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.

Question 66

The origin of a muscle can also be an insertion, depending on the position of the body and the movement being performed.

Question 67

Skeletal muscle fibers are multinucleate, because they arose from a number of embryonic cells.

Question 68

Of the various types of skeletal muscle fibers, the fibers that experience fatigue sooner are

A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.

Question 69

Of the various types of skeletal muscle fibers, the ones with the thinnest myofibrils are

A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.

Question 70

In striated muscle cells, which of these structures stores calcium ions that trigger contraction?

A) the internal surface of the plasma membrane
B) the terminal cisterns
C) T tubules
D) the myofibrils

Question 71

Muscle tissue is endowed with all of the following properties except

A) excitability.
B) contractibility.
C) extensibility.
D) transmissibility.

Question 72

What causes a strain or muscle pull?

A) a tear in a muscle
B) a tear in a tendon
C) pain in a muscle due to any muscle disorder
D) a sudden involuntary spasm of a muscle

Question 73

A muscle fascicle is

A) a bundle of cells.
B) a single muscle cell.
C) a bundle of myofilaments.
D) a tendon.

Question 74

Of the various types of skeletal muscle fibers, the fibers most resistant to fatigue are

A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.

Question 75

An aponeurosis is

A) a large muscle.
B) a nerve to a muscle.
C) clinical pain in a muscle.
D) a sheet of dense connective tissue.

Question 76

One of the largest and strongest muscles in the body is the gluteus maximus in the buttocks, which is important in these diverse muscular activities; walking, running, and climbing stairs. It must consist of

A) slow oxidative fibers only.
B) fast glycolytic fibers only.
C) fast oxidative fibers only.
D) a mixture of fiber types.

Question 77

In muscular dystrophy,

A) muscles decrease in size because of loss of fat and connective tissue.
B) muscle fibers degenerate and atrophy.
C) most forms of the disease do not appear to be inherited.
D) most cases appear in young females.

Question 78

Of the surrounding connective tissues of the muscle, the endomysium is the most superficial.

Question 79

In skeletal muscle fibers, which band or zone contains both thick and thin myofilaments?

A) Z
B) H
C) I
D) A

Question 80

Skeletal muscle is responsible for movements of the appendages, but not the abdomen.