THE HUMAN BODY AND ILLNESS BOOK: CH 9 MUSCULAR SYSTEM QUIZ

CHAPTER 9 MUSCULAR SYSTEM:

Which of the following muscles is described as striated and involuntary?

• Aponeurosis

• Smooth

• Skeletal

• Cardiac

Actin is

• located within the neuromuscular junction.

• a contractile protein that is part of the thin filament.

• called the thick filament.

• stored within the sarcoplasmic reticulum.

Which of the following forms cross-bridges with actin?

• Sarcoplasmic reticulum

• T tubules

• Myosin

• Sarcolemma

“Pumping iron” is most likely to cause

• atrophy.

• contracture formation.

• hypertrophy.

• muscular dystrophy.

The orbicularis oris muscle

• surrounds the mouth.

• flexes the head.

• is the smiling muscle.

• closes the eye.

Which of the following is not a facial muscle?

• Orbicularis oculi

• Zygomaticus

• Sternocleidomastoid

• Frontalis

Which muscle is located on the posterior area of the body?

• Latissimus dorsi

• Pectoralis major

• Quadriceps femoris

• Sternocleidomastoid

Which group of muscles is located on the posterior thigh?

• Rotator cuff muscles

• Quadriceps femoris

• Hamstrings

• Muscles of mastication

The biceps femoris, semitendinosus, and semimembranosus

• flex the foot.

• attach to the patella.

• are the hamstrings.

• are located on the anterior thigh.

The rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius

• insert on the calcaneus.

• flex the leg at the knee.

• are antagonistic to the quadriceps femoris.

• are the muscles of the quadriceps femoris.