A&P Chapter 8 - Muscles Review

Which of the following can be found at the neurotransmitter junction?

• motor end plate

• synaptic cleft

• vesicles

• ATP

________ is a high energy compound unique to muscle cells, which provides energy for regeneration of ATP.

• lactic acid

• pyruvic acid

• creatine phosphate

• tropomyosin

The sheath that surrounds a single muscle fiber is known. as ______

• superficial fascia

• perimysium

• epimysium

• endomysium

One brief contraction in response to a single threshold stimulus is _____.

• a twitch

• incomplete tetany

• contracture

• tetanus

Which of the following statements are true regarding muscles?

• the insertion of a muscle is the more moveable end

• the origin and insertion of a skeletal muscle do NOT lie on the same bone

• when a muscle contracts, it usually pulls toward the origin

• all are true

Which of the following refers to aerobic respiration?

• pyruvic acid breaking down to carbon dioxide and water & releasing energy

• glucose breaks down into lactic acid

• glucose breaks down into pyruvic acid

• pyruvic acid converting to lactic acid

Tags

NGSS.HS-LS2-3

NGSS.HS-LS1-7

Which of the following is true regarding most of the lactic acid produced by skeletal muscle during the oxygen debt?

• is converted back into glucose or glycogen

• is transmitted back to the liver

• both statements are true

• neither stament is true

Which of the following characteristics generally describe visceral smooth muscle?

• contracts as a whole sheet

• plasticity (is easily moldable)

• self-excitable

• all of the options listed

What does myoglobin do in skeletal muscle?

• catabolize pyruvic acid

• store oxygen for use during vigorous exercise

• assist anaerobic reactions

• all the options listed

Which of the following is not an anatomic characteristics of skeletal muscle cells?

• systematic arrangement of myofilaments

• contains T-tubules

• tapered ends

• many nuclei