Bones and Muscles

Which of the following bones is found in axial skeleton?

• Skull

• Pectoral girdle

• Pelvic girdle

• Limbs

Which of the following muscle contraction is where the muscle shortens?

• Eccentric contraction

• Concentric contraction

• Isometric contraction

Which of the following muscle contraction is where muscles has no change in length?

• Concentric contraction

• Eccentric contraction

• Isometric contraction

What type of skeleton is labeled with color blue?

• Axial skeleton

• Spatial skeleton

• Appendicular skeleton

TRUE OR FALSE. Acetylcholine is released and binds to receptors on the muscle membrane.

• True

• False

Which of the following bones are a part of appendicular skeleton? (Check all that apply)

• Pectoral girdle

• Pelvic girdle

• limbs

• thoracic cage

TRUE OR FALSE: Muscle fibers relax when the nervous system signal is still present.

• True

• False

Which of the following is a part of a muscle cell where Calcium ions bind to perform muscle contraction?

• Actin

• Myosin

• Troponin

• Tropomyosin

Which of the following is a protein where thick filaments that can be found in a muscle fiber called?

• Actin

• Myosin

• Tropomyosin

• Troponin

Which of the following stages is where the sarcomere contracts?

• Powerstroke

• Resting

• Detachment of myosin from actin

• Calcium ions bind to myosin