A.P.2

Question 1

Epimysium (Direct Attachment)

Answer 1

attaches the muscle body to other tissue

Question 2

Sarcolemma

Answer 2

Muscle cell membrane. Able to generate & propagate an action potential.

Question 3

T-tubules

Answer 3

invaginations or inward extension of the sarcolemma

Question 4

Sarcoplasm

Answer 4

Cytoplasm

Question 5

Sarcoplasmic Reticulum

Answer 5

Modified Smooth ER that stores and contains calcium ions when the muscle is in a relaxed state.

Question 6

Cisternae

Answer 6

abut to the T-tubules (apart of sarcoplasmic reticulum)

Question 7

Myofibrils are composed of called Sarcomeres

Answer 7

Actin filaments
Myosin Filaments
Titan

Answer 8

When the muscle is in a relax state it prevents the muscle hads from binding to actin at the myosin binding sites.

Question 9

Ca++ binds to T-T complex causing myosin binding site to be revealed.

Answer 9

ATP binds to myosin and energizes the myosin head

Myosin cocks back attaches to actin and levers