Muscular System

Muscle tissue that has voluntary regulation of contraction is

• cardiac muscle
• smooth muscle
• skeletal muscle
• cardiac and skeletal

The plasma (cell) membrane of a muscle is called the

• sarcoplasm
• sarcolemma
• sarcoplasmic reticulum
• sarcomere

Which of the following does not describe cardiac muscle tissue? 

• voluntary
• uninucleate cells with striations
• involuntary
• rhythmic contractions

The picture is of

• skeletal muscle and is voluntary
• cardiac muscle and is involuntary
• smooth muscle and is voluntary
• smooth muscle and is involuntary

The muscle tissue type that consists of single, very long, cylindrical, multinucleate cells with very obvious striations is

• cardiac
• smooth
• skeletal
• cardiac and skeletal

This type of membrane is found in between each fascicle wrapping each is called the

• aponeurosis
• endomysium
• epimysium
• perimysium

The striations that give skeletal muscle its characteristic striped appearance are produced, for the most part, by

• a difference in thickness of the sarcolemma
• the position of the myosin heads
• the sarcoplasmic reticulum
• the arrangement of the actin and myosin filaments

Which of the following is not a function of the muscular system?

• balance, support, and posture
• generate heat
• creation of action potentials
• produce movement

During skeletal muscle contraction, myosin cross bridges attach to the active sites of

• actin filaments
• myosin filaments
• the H zone
• thick filaments

The functional unit of a muscle cell is called the

• sarcomere
• sarcolemma
• sarcoplasm
• sarcoplasmic reticulum