UTA BIOL 2457 EXAM 3 2026 QUESTIONS
WITH VERIFIED CORRECT ANSWERS
◉ The delicate connective tissue that surrounds the skeletal muscle
fibers and ties adjacent muscle fibers together is the ________.
Answer: endomysium
◉ The ability of smooth muscle to function over a wide range of
lengths is called ________. Answer: plasticity
◉ When a muscle is stimulated repeatedly at a high rate, the amount
of tension gradually increases to a steady maximum tension. This is
called ________. Answer: complete tetanus
◉ The type of muscle fiber that is most resistant to fatigue is the
________ fiber. Answer: slow
◉ Interactions between actin and myosin filaments of the sarcomere
are responsible for ________. Answer: muscle contraction
, ◉ The area in the center of the A band that contains no thin
filaments is the ________. Answer: H band
◉ Receptors for acetylcholine are located on the ________. Answer:
motor end plate
◉ Active sites on the actin become available for binding after ________.
Answer: calcium binds to troponin
◉ Skeletal muscle fibers are formed from embryonic cells called
________. Answer: myoblasts
◉ Triceps brachii insert on the olecranon process of the ulna and
can act to ________. Answer: extend the forearm
◉ The most common lever systems in the body are those that have
the applied force between the fulcrum and the load. These are called
________ levers. Answer: third-class
◉ Which of the following describes the action of the serratus
anterior? Answer: protracts the shoulder, rotates the scapula
WITH VERIFIED CORRECT ANSWERS
◉ The delicate connective tissue that surrounds the skeletal muscle
fibers and ties adjacent muscle fibers together is the ________.
Answer: endomysium
◉ The ability of smooth muscle to function over a wide range of
lengths is called ________. Answer: plasticity
◉ When a muscle is stimulated repeatedly at a high rate, the amount
of tension gradually increases to a steady maximum tension. This is
called ________. Answer: complete tetanus
◉ The type of muscle fiber that is most resistant to fatigue is the
________ fiber. Answer: slow
◉ Interactions between actin and myosin filaments of the sarcomere
are responsible for ________. Answer: muscle contraction
, ◉ The area in the center of the A band that contains no thin
filaments is the ________. Answer: H band
◉ Receptors for acetylcholine are located on the ________. Answer:
motor end plate
◉ Active sites on the actin become available for binding after ________.
Answer: calcium binds to troponin
◉ Skeletal muscle fibers are formed from embryonic cells called
________. Answer: myoblasts
◉ Triceps brachii insert on the olecranon process of the ulna and
can act to ________. Answer: extend the forearm
◉ The most common lever systems in the body are those that have
the applied force between the fulcrum and the load. These are called
________ levers. Answer: third-class
◉ Which of the following describes the action of the serratus
anterior? Answer: protracts the shoulder, rotates the scapula
