BSC 2093 (IRSC) Test 3 Latest Exam
and All Actual Answers 2026 Updated.
Which of the following most aptly describes "muscle insertion"? - Answer tendon
attachment that moves
Tom, a trumpet player, asks you which muscles he should develop in order to be a better
trumpeter. What would you tell him? - Answer the buccinator and orbicularis oris
The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is
called a(n) - Answer tendon
During the ________ phase of action potential development, voltage-gated sodium channels
are open. - Answer depolarization
What sarcomere characteristic affects the amount of tension produced when a skeletal muscle
fiber contracts? (Module 9.9A) - Answer The length of the sarcomere.
Each of the following terms is a descriptive term for a muscle's action except - Answer
sartorius.
Tom is having difficulty plantar flexing and everting his foot. Which muscle is most likely
involved in this problem? - Answer Fibularis longus
The Na+/K+ ion pump is responsible for - Answer maintaining the sodium/potassium
concentration gradients constant.
Identify the muscle labeled "2." - Answer deltoid
The area in the center of the A band that contains no thin filaments is the - Answer H band
An alternate name for the prime mover in muscle action is the - Answer agonist
Twelve-year-old Aaron tried out for the Little League baseball team and was chosen as a pitcher.
One day, after a few months of practice and games, Aaron's father told him, "Hey, kid, you're
really getting some muscle definition there! You're going to be a major league pitcher someday,
with muscles like that!" Which of Aaron's muscles in particular do you think were growing
stronger and getting larger as a result of his pitching? - Answer deltoid, triceps brachii, and
brachioradialis
, Compare F-actin with G-actin. (Module 9.4A) - Answer F actin is a twisted strand made up of
two rows of G actin subunits where myosin heads can bind.
Which of the following muscles has its origin on the hyoid and inserts on the tongue? - Answer
Hyoglossus
Name the three types of muscle tissue, identify where they are found, and list their functions.
(Module 9.1A) - Answer Skeletal muscle is directly or indirectly attached to bones and
enables movement of the body. Cardiac muscle forms the heart and propels blood. Smooth
muscle is found throughout the body and moves substances through hollow tubes, such as in
the digestive tract and regulates the diameter of blood vessels.
The sternocleidomastoid inserts on the - Answer mastoid process.
Reflection of the trapezius muscle exposes - Answer the rhomboid minor and levator
scapulae muscles.
When a skeletal muscle fiber contracts, which of the following does not occur? - Answer
Myosin and actin filaments decrease in length.
The end of a muscle that remains stationary when the muscle contracts is called the - Answer
origin
Cross-bridges are portions of - Answer myosin molecules.
Which of the following best describes the sarcoplasmic reticulum? - Answer storage and
release site for calcium ions
The action potential is conducted into a skeletal muscle fiber by - Answer transverse tubules
The pectoralis major muscle inserts on the greater tubercle of the humerus. When it contracts,
it does not provide - Answer lateral motion at the shoulder.
Which of the following best describes the term "Z line"? - Answer where thin filaments are
anchored
Cellular membrane potential is measured in - Answer millivolts
and All Actual Answers 2026 Updated.
Which of the following most aptly describes "muscle insertion"? - Answer tendon
attachment that moves
Tom, a trumpet player, asks you which muscles he should develop in order to be a better
trumpeter. What would you tell him? - Answer the buccinator and orbicularis oris
The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is
called a(n) - Answer tendon
During the ________ phase of action potential development, voltage-gated sodium channels
are open. - Answer depolarization
What sarcomere characteristic affects the amount of tension produced when a skeletal muscle
fiber contracts? (Module 9.9A) - Answer The length of the sarcomere.
Each of the following terms is a descriptive term for a muscle's action except - Answer
sartorius.
Tom is having difficulty plantar flexing and everting his foot. Which muscle is most likely
involved in this problem? - Answer Fibularis longus
The Na+/K+ ion pump is responsible for - Answer maintaining the sodium/potassium
concentration gradients constant.
Identify the muscle labeled "2." - Answer deltoid
The area in the center of the A band that contains no thin filaments is the - Answer H band
An alternate name for the prime mover in muscle action is the - Answer agonist
Twelve-year-old Aaron tried out for the Little League baseball team and was chosen as a pitcher.
One day, after a few months of practice and games, Aaron's father told him, "Hey, kid, you're
really getting some muscle definition there! You're going to be a major league pitcher someday,
with muscles like that!" Which of Aaron's muscles in particular do you think were growing
stronger and getting larger as a result of his pitching? - Answer deltoid, triceps brachii, and
brachioradialis
, Compare F-actin with G-actin. (Module 9.4A) - Answer F actin is a twisted strand made up of
two rows of G actin subunits where myosin heads can bind.
Which of the following muscles has its origin on the hyoid and inserts on the tongue? - Answer
Hyoglossus
Name the three types of muscle tissue, identify where they are found, and list their functions.
(Module 9.1A) - Answer Skeletal muscle is directly or indirectly attached to bones and
enables movement of the body. Cardiac muscle forms the heart and propels blood. Smooth
muscle is found throughout the body and moves substances through hollow tubes, such as in
the digestive tract and regulates the diameter of blood vessels.
The sternocleidomastoid inserts on the - Answer mastoid process.
Reflection of the trapezius muscle exposes - Answer the rhomboid minor and levator
scapulae muscles.
When a skeletal muscle fiber contracts, which of the following does not occur? - Answer
Myosin and actin filaments decrease in length.
The end of a muscle that remains stationary when the muscle contracts is called the - Answer
origin
Cross-bridges are portions of - Answer myosin molecules.
Which of the following best describes the sarcoplasmic reticulum? - Answer storage and
release site for calcium ions
The action potential is conducted into a skeletal muscle fiber by - Answer transverse tubules
The pectoralis major muscle inserts on the greater tubercle of the humerus. When it contracts,
it does not provide - Answer lateral motion at the shoulder.
Which of the following best describes the term "Z line"? - Answer where thin filaments are
anchored
Cellular membrane potential is measured in - Answer millivolts
