Skeletal Muscle Tissue

Question 1

Epimysium

Answer 1

A sheath of fibrous tissue surrounding a muscle.

Question 2

Perimysium

Answer 2

The sketch of. One time tissue surrounding. Bundle of muscle fibers.

Question 3

Endomysium

Answer 3

Sheath that covers muscle fiber.

Question 4

Muscle fascicle

Answer 4

A bundle of skeletal muscle fibers surrounded by perimysium.

Question 5

Aponeurosis

Answer 5

Wide fibers tissue that takes the place of a tendon in sheet like muscles.

Question 6

Myosatellite

Answer 6

Precursors to skeletal muscle cells

Question 7

Myoblast

Answer 7

An embryonic cell that becomes a cell of muscle fiber.

Question 8

Muscle fiber

Answer 8

A form of striated muscle tissue which is under the voluntary control of the somatic nervous system.

Question 9

Sarcolemma

Answer 9

Sheath the envelops the fibers of skeletal muscles.

Question 10

Sarcoplasm

Answer 10

The cytoplasm of started muscles cells.

Question 11

Myofibril

Answer 11

Any of the elongated contractile threads found in striated muscle fibers.

Question 12

Myofilaments

Answer 12

Filaments of myofibrils constructed from proteins, myosin and actin.

Question 13

Thick filaments

Answer 13

Primarily myosin.

Question 14

Thin filaments

Answer 14

Actin

Question 15

Sarcomere

Answer 15

A structural unit of a myofibril in striated, consisting of a dark band and the nearer half of each adjacent pale band.

Question 16

Zone of overlap

Answer 16

When sarcoma rest of a muscle fiber are stretched to a longer length, the zone of overlaps shortens and fewer myosin heads can contact with thin filaments

Question 17

A band

Answer 17

Dark band of the muscle sarcomere that corresponds to the thick myosin. The A band is situated on either side of the H zone. The area where contraction and relaxation occurs.

Question 18

I band

Answer 18

The light band on either side of the Z line. Thin (actin) filaments are not overlapped by thick myosin filaments

Question 19

Z-line

Answer 19

The borders that separate and link sarcomere said within a skeletal muscle.

Question 20

Tendons

Answer 20

Connect muscle to bone

Question 21

M-line

Answer 21

A fine line in the center of the A band of the sarcomere of striated muscle myofibrils.

Question 22

H band

Answer 22

A pale zone sometimes seen traversing the center of the a band of a striated myofibril.

Question 23

Actinin

Answer 23

Necessary for the attachment of actin filaments to the Z-line in skeletal muscle.

Question 24

T-tubule

Answer 24

Continuous with sarcolemma and transmit electrical signals.

Question 25

Sarcoplasmic reticulum

Answer 25

Specialized type of smooth ER that regulates Ca ion concentration in the cytoplasm of striated muscles.

Question 26

Triad

Answer 26

A structure formed by a t-tubule with sarcoplasmic reticulum known as the terminal cisterns on either side.

Question 27

F-actin

Answer 27

Linear polymer microfilament

Question 28

G- actin

Answer 28

Monomer (globular)

Question 29

Nebulin

Answer 29

Actin-binding protein which is localized to the thin filament of the sarcomeres.

Question 30

Tropomyosin

Answer 30

Protein involved in muscle contraction. Occurs together with troponin.

Question 31

Troponin

Answer 31

Protein involved in muscle contraction. It occurred with troop myosin in the thin villi nets of muscled tissue.

Question 32

Myosin

Answer 32

A fibrous proteins that forms the contractile filaments of muscle cells and is also involved in motion.

Question 33

Titin

Answer 33

A large fibrous protein that connects thick myosin filaments to Z discs in the sarcomere.

Question 34

Properties of skeletal muscle

Answer 34

1. Excitability
2. Conductivity
3. Contractility
4. Extensibility
5. Elasticity

Question 35

Myoblasts

Answer 35

Muscle stem cells. Divide and merge with others.

Question 36

Satellite cells

Answer 36

Can “wake up” during injury.