MODULE 2B : MUSCULAR TISSUE

Question 0

Cell membrane of myoblasts

Answer 0

SARCOLEMMA

Question 1

Cytoplasm of myoblasts

Answer 1

SARCOPLASM

Question 2

Multinucleated, nuclei are located at the periphery of the cell. Cross-striations are present

Answer 2

SKELETAL MUSCLE CELL

Question 3

Embryonic origin of muscle cells

Answer 3

MESENCHYMAL CELL

Question 4

Polygonally-shaped cells under cross section

Answer 4

SKELETAL MUSCLE CELL

Question 5

Connective tissue coverings of skeletal muscle cells

Answer 5

COLLAGEN TYPE I & TYPE III

Question 6

Connective tissue that surrounds the skeletal muscle bundle

Answer 6

EPIMYSIUM

Question 7

Characteristic of Epimysium

Answer 7

DICT

Question 8

Fascicle of muscle fiber

Answer 8

PERIMYSIUM

Question 9

Muscle fiber is called

Answer 9

ENDOMYSIUM

Question 10

Striations in muscle fibers are caused due to what alternating structures?

Answer 10

A BANDS & I BANDS

Question 11

I bands are divided by what structure?

Answer 11

Z LINES

Question 12

A series of sarcomeres that run the length of the muscle fiber is called

Answer 12

MYOFIBRIL

Question 13

Region where myosin exists

Answer 13

H BANDS

Question 14

Region where only actin exists

Answer 14

I BAND

Question 15

Basic structural and functional unit of skeletal muscle

Answer 15

SARCOMERE

Question 16

Moves the tropomyosin to expose the actin-binding site for myosin heads to form bridges

Answer 16

TROPONIN

Question 17

Large protein, binding the A-band to the M and Z lines

Answer 17

TITIN

Question 18

Denervation of skeletal muscle fibers lead to

Answer 18

ATROPHY & PARALYSIS

Question 19

Slow oxidative muscle type

Answer 19

TYPE I

Question 20

Muscle type found commonly in athletes

Answer 20

TYPE II

Question 21

Type of muscle with numerous hemoglobin resulting to its reddish color

Answer 21

TYPE I

Question 22

Muscle type which acts on rapid contractions / shirt bursts

Answer 22

TYPE II

Question 23

Muscle type with minimal glycogen

Answer 23

TYPE I

Question 24

Type of muscle with numerous mitochondria

Answer 24

TYPE II

Question 25

Type of muscle which acts on slow, continuous, prolonged contractions

Answer 25

TYPE I

Question 26

Small muscles with large NMJ for fine movements

Answer 26

TYPE IIb

Question 27

accumulation of lactic acid in muscle

Answer 27

MUSCLE ISCHEMIA

Question 28

Characterized by branched cells with a centrally located nuclei (may be binucleated)

Answer 28

CARDIAC MUSCLE CELLS

Question 29

Carries the richest blood supply among the three muscle fibers

Answer 29

CARDIAC MUSCLE CELLS

Question 30

Presence of intercalated disks

Answer 30

CARDIAC MUSCLE

Question 31

Anchoring site of actin filaments in cardiac muscle

Answer 31

FASCIA ADHERENS

Question 32

Binds cardiac cells together

Answer 32

DESMOSOMES

Question 33

Ionic continuity between cells

Answer 33

GAP JUNCTION

Question 34

Has more and larger T tubules but less developed SR

Answer 34

CARDIAC MUSCLE

Question 35

Smallest of the muscle cell types

Answer 35

SMOOTH MUSCLE CELL

Question 36

Characterized by fusiform shaped cells with centrally placed nuclei

Answer 36

SMOOTH MUSCLE

Question 37

Type of myofilament intermediate in all smooth muscle

Answer 37

DESMIN

Question 38

Type of myofilament in vascular smooth muscle

Answer 38

VIMENTIN

Question 39

True or False : Nerves initiate contractions

Answer 39

FALSE | NERVES : MODIFY, not initiate contractions

Question 40

Type muscle cell which acts in strong, quick discontinuous voluntary contractions

Answer 40

SKELETAL MUSCLE

Question 41

Type of muscle which acts in strong, quick continuous involuntary contractionsh

Answer 41

CARDIAC MUSCLE

Question 42

Type of muscle which acts on weak, slow involuntary contractions

Answer 42

SMOOTH MUSCLE

Question 43

No mitosis; limited regeneration

Answer 43

SKELETAL MUSCLE

Question 44

No regeneration beyond early childhood; damage leads to myocardial scar

Answer 44

CARDIAC MUSCLE (fibroblast proliferation)

Question 45

More regenerating ability through mitosis

Answer 45

SMOOTH MUSCLE