Exploring the Muscular System Anatomy

What are the primary goals for learning about skeletal muscles?

• To study the nervous system

• To understand the role of tendons

• To learn about bone structure

• To compare and contrast different muscle cells

Which type of muscle cell is under voluntary control?

• Skeletal muscle cells

• All of the above

• Smooth muscle cells

• Cardiac muscle cells

What is the connective tissue layer that surrounds a whole skeletal muscle called?

• Epimysium

• Perimysium

• Sarcolemma

• Endomysium

Which connective tissue layer surrounds individual muscle cells?

• Sarcolemma

• Epimysium

• Endomysium

• Perimysium

What is the function of the sarcoplasmic reticulum in muscle cells?

• To store genetic material

• To synthesize ATP

• To serve as a reservoir of calcium ions

• To insulate muscle cells

What are the two main types of myofilaments in a muscle cell?

• Tubulin and Actin

• Collagen and Elastin

• Actin and Myosin

• Keratin and Fibrin

What is the name of the plasma membrane of a muscle cell?

• Perimysium

• Endomysium

• Epimysium

• Sarcolemma

What is the smallest contractile unit of a muscle called?

• Sarcomere

• Myofibril

• Fascicle

• Myofilament

Which structure in the muscle cell is known as the powerhouse of the cell?

• Nucleus

• Sarcoplasmic reticulum

• Mitochondria

• T-tubules

What is the hierarchical organization of a whole muscle from smallest to largest?

• Fascicles, Myofilaments, Myofibrils, Muscle cells, Whole muscle

• Myofilaments, Myofibrils, Muscle cells, Fascicles, Whole muscle

• Myofibrils, Myofilaments, Muscle cells, Fascicles, Whole muscle

• Muscle cells, Myofilaments, Myofibrils, Fascicles, Whole muscle

Tags

NGSS.HS-LS1-2