MUSCLE TISSUE

Question 1

Striated; alternating dark and light bands

Answer 1

Striations of skeletal muscle

Question 2

Multi-nucleated at periphery

Answer 2

Is the nucleus of skeletal muscle single or multinucleated? And where it can be found?

Question 3

Rapid and voluntary

Answer 3

What is the contraction of skeletal muscle?

Question 4

Myofibrils

Answer 4

What are the main component of sarcoplasm?

Question 5

Pushed by the myofibrils

Answer 5

Why are the nuclei of the skeletal muscle are at the periphery?

Question 6

Nonstriated; nonbranching

Answer 6

Is the smooth muscle striated or nonstriated? Branching or nonbranching?

Question 7

Fusiform/ spindle-shaped/ squamous

Answer 7

Shape of the cells in smooth muscle

Question 8

Single and center

Answer 8

Smooth muscle

Nucleus: mono/multinucleated? Periphery/center?

Question 9

Homogenously eosinophilic (red/pink stained)

Answer 9

What is the condition of the smooth muscles’ cytoplasm?

Question 10

Involuntary and slow

Answer 10

Contraction of smooth muscle?

Question 11

Striated; branching

Answer 11

Cardiac muscle

Striated/non striated?; branching/nonbranching?

Question 12

Mononucleated; center

Answer 12

Cardiac muscle

Nucleus: multi/mono-nucleated? Center/periphery?

Question 13

Involuntary and rhythmic

Answer 13

What is the contraction of cardiac muscle?

Question 14

Intercalated disk

Answer 14

In cardiac muscle, what makes the cell join together?

Question 15

Muscle
Fascicle
Muscle fiber
Myofibrils
Myofilaments

Answer 15

Organization of skeletal muscle from macro to microscopic

Question 16

Dense connective tissue

Answer 16

What is the kind of CT that epimysium is made up of?

Question 17

Surround the muslce

Answer 17

What does epimysium covers?

Question 18

Thin and branching CT

Answer 18

What is the CT of the perimysium?

Question 19

True

Answer 19

True/false: In perimysiun there is the presence of blood vessels and nerves

Question 20

Fascicle

Answer 20

What does perimysium surrounds?

Question 21

Muscle fiber

Answer 21

What does endomysium surrounds?

Question 22

Delicate network of reticular fibers

Answer 22

What is the composition of endomysium?

Question 23

Myofibril

Answer 23

It is the main bulk of muscle fiber

Question 24

A band

Answer 24

Dark band of myofibril that consist of alternating thin and thick filaments

Question 25

False

Answer 25

True/false: A band also shortens during contraction

Question 26

H band

Answer 26

Central portion of A band; devoid of thin filaments

Question 27

M line

Answer 27

Bisect H band

Question 28

I band

Answer 28

Light band; devoid of thick filaments

Question 29

I band

Answer 29

It is the one that shortens during contraction (myofibril)

Question 30

Z line

Answer 30

Bisects I band

Question 31

Center: A band: 2 contiguous I bands one on each side

Answer 31

The sarcomere includes centrally located _________ and 2 ________ contiguous __________ one on each side

Question 32

Sarcomere

Answer 32

It is the basic contractile unit that is located from one Z line to another Z line

Question 33

M line to Z line

Answer 33

The boundary of extension of the titin (from __ line to __ line) - myofibrils

Question 34

Titin

Answer 34

It maintains location of A band; responsible for the ability of muscle to back into its resing length after being stretched

Question 35

A bands I bands Z lines

Answer 35

These myofibrils are the only ones that can be seen under LM

Question 36

Sarcolemma

Answer 36

Plasma membrane of the muscle

Question 37

External lamina

Answer 37

What is the coating of the external surface of sarcolemma

Question 38

Dystrophin

Answer 38

It is the coating of the inner layer of sarcolemma that prevent muscle cells from being stressed due to continuous stretching

Question 39

Muscular dystrophy

Answer 39

A hereditary disease caused by a defect in the gene for dystrophin

Question 40

Males (9-13 years)

Answer 40

Who are affected by the muscle dystrophy?

Question 41

Satellite cells/myosatellite cells

Answer 41

Precursors of skeletal muscle cell that is found underneath the sarcolemma

Question 42

External lamina

Answer 42

What should be kept intact for the continuous regeneration of satellite cell?

Question 43

Mitochondria

Answer 43

What is the organelle that is called sarcosome in muscle tissue?

Question 44

Sarcoplasm

Answer 44

It contains glycogen granules and myoglobin

Question 45

Glycogen granules

Answer 45

It contains the energy needed for muscle contraction

Question 46

Myofibrils

Answer 46

Oxygen binding protein of skeletal muscle tissue that gives its brown color

Question 47

Sarcoplasmic reticulum

Answer 47

A site for sequestering calcium during muscle relaxation

Question 48

False

Answer 48

True/false: there is the presence of ribosomes in sarcoplasmix reticulum

Question 49

Terminal cisterna

Answer 49

Found at A-I junction that contains calsequestrin

Question 50

Calsequestrin

Answer 50

Protein that sequesters Calcium

Question 51

T-tubule

Answer 51

Found at each pair of terminal cisterna that is a tubular invagination of the sarcolemma extending inward from the surface of the fiber

Question 52

T-tubule

Answer 52

It is the passageway of action potentials from sarcolemma

Question 53

Triad

Answer 53

2 parallel terminal cisterna + T-tubule is called?

Question 54

Two triads

Answer 54

Each sarcomere is composed of how many triad?

Question 55

It aids in muscle contraction

Answer 55

Function of triad

Question 56

False - it is the only thick filament

Answer 56

True or false: Myosin is a thin filament

Question 57

Myosin

Answer 57

A protein that is a major component of the A band

Question 58

Heavy meromyosin | Light meromyosin

Answer 58

These two results from the division of myosin due to enzymatic cleavage

Question 59

Heavy meromyosin

Answer 59

It comprises the head and forms the cross bridge (Myosin)

Question 60

Cross bridging

Answer 60

It happens when the head goes toward actin when muscle contracts

Question 61

False

Answer 61

True/false: Crossbridge is found in H band

Question 62

Light meromyosin

Answer 62

It comprise the tail of the myosin

Question 63

Actin Tropomyosin Troponin

Answer 63

Proteins that composed the thin filaments of myofilament

Question 64

Actin

Answer 64

Protein that is the main component of I band

Question 65

Polymerization of G-actin

Answer 65

This process results to one strand of actin

Question 66

F-actin

Answer 66

It is a two stranded actin (2 helically entwined strands)

Question 67

G-actin

Answer 67

It is the binding site of myosin to actin are located

Question 68

Sssss

Answer 68

Sffss