THE MUSCULAR SYSTEM EXAM SCRIPT 2026
QUESTIONS WITH ANSWERS GRADED A+
◉ When does cross bridge cycling end? Answer: Cross bridge cycling
ends when sufficient calcium has been actively transported back into
the sarcoplasmic reticulum to allow calcium to unbind from
troponin.
{The sarcoplasmic reticulum contains Ca2+-ATPases that actively
transport Ca2+ into the SR. Without Ca2+, troponin returns to its
resting shape, and tropomyosin glides over and covers the myosin
binding sites on actin.}
◉ Which neurotransmitter is released by motor neurons at the
neuromuscular junction? Answer: acetylcholine
◉ Which of these characteristics applies only to cardiac muscle
tissue? Answer: intercalated discs
◉ Which layer of connective tissue surrounds each skeletal muscle
fiber? Answer: endomysium
◉ Which connective tissue bundles muscle fibers into fascicles?
Answer: perimysium
, ◉ There are three types of muscle tissue. Which of the following is
classified as part of the muscular system? Answer: all skeletal
muscles
◉ ALS (amyotrophic lateral sclerosis) is a disease that destroys
nerve cells that control skeletal muscle activity. Without neural
stimulation, skeletal muscles eventually waste away and mobility is
impossible. In other words, skeletal muscles __________. Answer:
become atrophied
◉ What term describes the ability of a muscle to vary its degree of
shortening to generate the strength needed to lift a 5 lb weight, a 7
lb weight, and finally a 10 lb weight? Answer: graded responses
◉ Which of these increases as muscles age? Answer: amount of
connective tissue in a muscle
◉ What can older individuals do to increase muscle strength?
Answer: regularly use hand weights and practice leg lifts
◉ {lab} Gluteus Maximus Answer:
◉ {lab} Gluteus Medias Answer:
QUESTIONS WITH ANSWERS GRADED A+
◉ When does cross bridge cycling end? Answer: Cross bridge cycling
ends when sufficient calcium has been actively transported back into
the sarcoplasmic reticulum to allow calcium to unbind from
troponin.
{The sarcoplasmic reticulum contains Ca2+-ATPases that actively
transport Ca2+ into the SR. Without Ca2+, troponin returns to its
resting shape, and tropomyosin glides over and covers the myosin
binding sites on actin.}
◉ Which neurotransmitter is released by motor neurons at the
neuromuscular junction? Answer: acetylcholine
◉ Which of these characteristics applies only to cardiac muscle
tissue? Answer: intercalated discs
◉ Which layer of connective tissue surrounds each skeletal muscle
fiber? Answer: endomysium
◉ Which connective tissue bundles muscle fibers into fascicles?
Answer: perimysium
, ◉ There are three types of muscle tissue. Which of the following is
classified as part of the muscular system? Answer: all skeletal
muscles
◉ ALS (amyotrophic lateral sclerosis) is a disease that destroys
nerve cells that control skeletal muscle activity. Without neural
stimulation, skeletal muscles eventually waste away and mobility is
impossible. In other words, skeletal muscles __________. Answer:
become atrophied
◉ What term describes the ability of a muscle to vary its degree of
shortening to generate the strength needed to lift a 5 lb weight, a 7
lb weight, and finally a 10 lb weight? Answer: graded responses
◉ Which of these increases as muscles age? Answer: amount of
connective tissue in a muscle
◉ What can older individuals do to increase muscle strength?
Answer: regularly use hand weights and practice leg lifts
◉ {lab} Gluteus Maximus Answer:
◉ {lab} Gluteus Medias Answer:
