Muscular System

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

• Maintain posture

• Stabilize Joints

• Generate Heat

• Store Energy

In forearm flexion, what is the prime mover & what is antagonist?

• Biceps; Triceps

• Triceps; Biceps

• Biceps; Brachialis

• Triceps; Brachialis

A muscle that helps contraction by immobilizing the origin bone is called a/an...

• Prime Mover

• Antagonist

• Synergist

• Fixator

Which type of tissue does NOT compose muscles?

• Skeletal Muscle Tissue

• Smooth Muscle Tissue

• Nervous Tissue

• Connective Tissue

Which type of tissue produces involuntary movements?

• Skeletal Muscle Tissue

• Cardiac Muscle Tissue

• Nervous Tissue

• Connective Tissue Proper

Which of the following describes the organization of skeletal muscle from largest to smallest?

• Muscles - Fascicles - Muscle Fibers - Myofibrils - Sarcomeres - Myofilaments

• Muscles - Muscle Fibers - Fascicles - Sarcomeres - Myofilaments - Myofibrils

• Muscles - Sarcomeres - Muscle Fibers - Myofibrils - Myofilaments - Fascicles

• Muscles - Myofibrils - Myofilaments - Muscle Fibers - Sarcomeres - Fascicles

Tags

NGSS.HS-LS1-2

The contractile unit of the muscle is called the...

• Myofilament

• Myofibril

• Sarcomere

• Fascicle

Actin & Myosin are examples of...

• Myofibirils

• Myofilaments

• Muscle Fibers

• Fascicles

Which statement about myosin & actin is FALSE?

• Myosin is thicker than actin

• Myosin & actin are separated by Z discs

• Myosin binds to actin during muscle contraction

• Myosin & actin make up fascicles

Which of the following is NOT required for myosin to gain access to actin?

• An action potential triggers the release of calcium ions

• Calcium binds to troponin

• Troponin binds to tropomyosin

• Myosin binds to ADP to form ATP