Muscles

Question 1

Bring action potential to interior of the cell (muscle)

Answer 1

T-Tubule

Question 2

Contains sarcoplasmic reticulum and T-Tubule

Answer 2

Triad

Question 3

Stores Ca+ ions

Answer 3

Sarcoplasmic recticulum

Question 4

Contains bundles of fascicles, biggest unit

Answer 4

Whole muscle

Question 5

CT membrane covering whole muscle

Answer 5

Epimysium

Question 6

Bundle of muscle cell

Answer 6

Fascicle

Question 7

CT membrane covering fascicle

Answer 7

Perimysium

Question 8

Third largest structure (cells)

Answer 8

Muscle fibers

Question 9

Outer covering of each muscle cell (fiber)

Answer 9

Endomysium

Question 10

A myofiber is formed from several

Answer 10

Myofibrils

Question 11

Whole muscle, fascicle, muscle cell, myofibrils, sarcomeres

Answer 11

Largest to smallest

Question 12

Myofilaments, sarcomere, myofibril, myofiber, fascicle, whole muscle

Answer 12

Smallest to largest

Question 13

Contains several sarcomeres

Answer 13

Myofibrils

Question 14

Contractile unit on muscle floor

Answer 14

Sarcomere

Question 15

Sarcomere shortens

Answer 15

Contracted myofiber

Question 16

Initial state of myofiber

Answer 16

Rest

Question 17

Sarcomere lengthens

Answer 17

Relaxed myofiber

Question 18

In the H-zone (bare zone)

Answer 18

Myosin

Question 19

Secretes Ca+ ions

Answer 19

Sarcoplasmic reticulum

Question 20

Binds to a regulatory molecule (troponin)

Answer 20

Ca+

Question 21

Voluntary, excitable, multinucleated, striated, associated with skeleton, motor unit (one motor neuron and the number of skeletal muscle fibers it supplies)

Answer 21

Skeletal muscle

Question 22

Non-striated, involuntary, excitable, associated with internal organs and viscera (glands), single nucleus

Answer 22

Smooth muscle

Question 23

In heart

Answer 23

Cardiac muscle

Question 24

Cell membrane of a myofiber

Answer 24

Sarcolemma

Question 25

*Removes myosin heads from actin*

Answer 25

ATP

Question 26

*One nerve cell and number of muscle cells it supplies*

Answer 26

Motor unit

Question 27

*NOT in sarcomere*

Answer 27

X-region

Question 28

*Non-striated*

Answer 28

Smooth muscle

Question 29

*Single cell*

Answer 29

Endomysium

Question 30

*Covers whole muscle*

Answer 30

Epimysium

Question 31

*Acts as a block/barricade to binding site*

Answer 31

Tropomyosin

Question 32

*Na+ binds to it, thumb tack like structures*

Answer 32

Troponin

Question 33

*Binds to actin, tropomyosin and troponin needs to be removed*

Answer 33

Myosin

Question 34

*Contains sarcomeres*

Answer 34

Myofibril

Question 35

*Moves/shifts*

Answer 35

Actin

Question 36

*Myofilament, myofibril, myofiber, fascicle, whole muscle*

Answer 36

Smallest to largest

Question 37

*Muscle cell*

Answer 37

Myofiber

Question 38

*Disappears when sarcomere narrows and muscle contracts*

Answer 38

I band

Question 39

*Myosin, in center of sarcomere*

Answer 39

A band