Chapter 9: Exam 3

Which of the following is not a major function of skeletal muscle?

• Producing body movement

• Generating heat

• Producing red blood cells

• Maintaining posture

What happens to muscles as we age?

• Muscles increase in size and flexibility

• Muscle tissue is replaced with bone

• Muscle mass and strength decrease

• Tendons become longer and more elastic

What is one benefit of regular exercise on the muscular system?

• Decreases metabolism

• Weakens bone structure

• Increases strength and endurance

• Prevents oxygen from reaching muscles

What can the name of a muscle often tell us?

• The number of blood vessels

• The person who discovered it

• Its action, location, or shape

• Its bone marrow content

Which of the following is a first-class lever example in the body?

• Calf raise

• Nodding the head

• Biceps curl

• Lifting with quadriceps

Which muscle is responsible for elevating the jaw?

• Sternocleidomastoid

• Masseter

• Frontalis

• Scalenes

What is the origin of the biceps brachii muscle?

• Radius

• Ulna

• Scapula

• Humerus

What is the action of the gluteus maximus?

• Flexes the thigh

• Extends and laterally rotates the thigh

• Flexes the leg

• Dorsiflexes the foot

Which group of muscles assists in knee extension?

• Hamstrings

• Iliopsoas

• Quadriceps femoris

• Gastrocnemius

Which muscle group forms the pelvic floor and supports pelvic organs?

• Psoas major

• Rectus abdominis

• Levator ani

• Iliacus