Finals: Muscle Flashcards Preview

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Flashcards in Finals: Muscle Deck (23)
0

What type of muscle is incapable of regeneration

Cardiac muscle

1

A T-tubule surround what cellular structure at the end of the Z-line in muscle cell

Myofibril

2

What morphologic structure lies within the I-band

Z-line

3

During contraction, calcium binds to what protein

Calmodulin

4

What type of muscles contain peripherally located nuclei

Skeletal muscle

5

What connective tissue surrounds a muscle fiber

Endomysium

6

What functional unit of a skeletal muscle lies between 2 Z lines

Sarcomere

7

What does a perimysium surround

Fascicle

8

What is the only filament found at the H band

Myosin

9

What type of muscle functions as a syncytium

Skeletal muscle

10

Large, elongated, sausage shaped nuclei are found in this type of muscle

Smooth muscle

11

Troponin and tropomyosin bind actin until what substance is released from the SR

Calcium

12

What is the major component of thick filament

Myosin

13

What structure do actin filament insert in

Z-line

14

What muscle cell structure is composed of fascia adherens & gap junctions

Intercalated disc

15

What is the main cell type found in the endomysium

Fibroblast

16

What structure within the cytoplasm surround the myofibrils at the level of the Z-line

T tubules

17

Epimysium is composed of what type of tissue

LCT

18

What structure besides the Z-line contains only actin filaments

I-band

19

What type of cells is multinucleated

Skeletal muscle

20

What part of the striations seen in skeletal muscle do the actin and myosin filaments overlap

A-band

21

What substance anchors thick filaments to the Z disc

Titin

22

The primary function of the SR is to store & release what substance

Calcium