Video 1: Muscle Contraction

What two significant proteins of the muscles are involved in the contraction and relaxation of your muscles?

• Actin and Myosin

• Glucose and ATP

• catalase and pepsin

• Glycine and trypsin

Tags

NGSS.HS-LS1-1

What are the three types of muscle tissue?

• Cardiac, Smooth, Skeletal

• Cardiac, Voluntary, Epithelial

• Tendons, Cartilage, and Nervous

Which of the following best describes smooth muscle tissue?

• Involuntary, not striated

• involuntary, striated

• voluntary, not striated

• voluntary, striated

Which of the following best describes cardiac muscle tissue?

• Branching, involuntary, striated

• Non-branching, striated, involuntary

• branching, not striated, voluntary

• Non-branching, not striated, and involuntary

Which of the following describes skeletal muscle?

• voluntary, attached to bones, striated

• involuntary, attached to bones, striated

• voluntary, attached to epithelial tissue, not striated

• involuntary, attached to bones, not striated

The parts of a skeletal muscle, from smallest to largest, are

• muscle, epimysium, perimysium, endomysium fascicle, muscle fiber, myofilament

• myofilament, sarcomere, myofibril, muscle fiber, fascicle, muscle

• muscle fiber, myofilament, myofibril, sarcomere, fascicle, epimysium, muscle

• myofibril, myofilament, sarcomere,  fascicle, muscle fiber, endomysium, epimysium, muscle

A Sarcomere is made up of alternating

• Actin and Myosin myofibrils

• Actin and Myosin myofilaments

• titin & actin myofilaments

• none of the above

When muscles are at rest the actin and myosin are touching. 

• True

• False

In relation to the actin filaments, Tropomyosin and Troponin act like

• Body Builders

• Body Armour

• Body Guards

What are the regulatory proteins that control muscle contraction?

• actin & myosin

• dark bands & light bands

• titin & actin

• troponin & tropomyosin

• acetylcholine & actin