Muscular System Quiz

What is the primary function of endomysium?

• Surrounds individual muscle fibers

• Surrounds fascicles

• Surrounds the entire muscle

• Surrounds myofibrils

What do all layers of fascia combine to form?

• Ligaments or cartilage

• Tendons or aponeuroses

• Muscles or nerves

• Bones or joints

What is the shape of tendons?

• Flat

• Spherical

• Cylindrical

• Irregular

What is the function of t-tubules in muscle fibers?

• Generate ATP

• Store calcium ions

• Penetrate through the center of the cell

• Contractile proteins

Which part of the muscle fiber contains the genetic material?

• Sarcolemma

• Nucleus

• Myofibril

• Sarcoplasmic Reticulum

What molecule is necessary for myosin to uncouple from actin?

• ADP

• ATP

• NADH

• FADH2

What is rigor mortis?

• The stiffening of muscles after death due to the lack of ATP production.

• The relaxation of muscles after exercise.

• The contraction of muscles during sleep.

• The swelling of muscles due to fluid retention.

Rigor mortis is a result of the lack of which molecule?

• ATP

• DNA

• RNA

• Glucose

Which process is directly affected by the lack of ATP in rigor mortis?

• Muscle contraction

• Bone growth

• Nerve regeneration

• Blood circulation

Rigor mortis is a phenomenon that occurs after what event?

• Death

• Birth

• Exercise

• Sleep