A&P - muscles

Muscle tissue has all of the following properties except ________.

• secretion

• excitability

• extensibility

• contractility

Muscle tissue does NOT ________.

• produce blood cells

• produce movement

• generate heat

• stabilize joints

• maintain posture

Which of the following is CORRECTLY paired?

• skeletal muscle: voluntary control

• cardiac muscle: voluntary control

• smooth muscle: striated

• cardiac muscle: nonstriated

Which of the following surrounds the individual muscle cell?

• endomysium

• epimysium

• fascicle

• perimysium

Myoglobin ________.

• stores oxygen in muscle cells

• produces the end plate potential

• is a protein involved in the direct phosphorylation of ADP

• breaks down glycogen

The term aponeurosis refers to ________.

• a sheetlike indirect attachment to a skeletal element

• the tropomyosin-troponin complex

• the rough endoplasmic reticulum

• the bands of myofibrils

The connective tissue sheaths of skeletal muscle, in order from internal to external, are the ________.

• endomysium, perimysium, and epimysium

• endomysium, epimysium, and perimysium

• perimysium, endomysium, and epimysium

• epimysium, endomysium, and perimysium

• epimysium, perimysium, and endomysium

Which of the following is true concerning the anatomy of a skeletal muscle fiber?

• Myofibrils contain thick and thin filaments.

• A triad consists of a T tubule and the nearby sarcolemma.

• T tubules are extensions of the sarcoplasmic reticulum.

• The sarcolemma is the muscle fiber’s cytoplasm

The calcium that initiates skeletal muscle contraction is released from what structure(s)?

• terminal cisternae

• sarcolemma

• sarcomeres

• T tubules

Which of the following are composed of myosin?

• thick filaments

• intermediate filaments

• tropomyosin

• thin filaments