BIO 201 RIO SALADO FINAL EXAM/BIO 201 ANATOMY
AND PHYSIOLOGY EXAM QUESTIONS AND ANSWERS
What are the differences, if any, in the composition for thick and
thin myofilaments?
Thin filaments contain actin, troponin and attach to the Z disc.
Thick filaments contain ATPases, myosin and does not lie in the I band.
Thick and thin filaments generally have the same composition.
Both A and B are correct. - CORRECT ANSWER-D) Both A and B are correct.
Thin filaments contain actin, troponin and attach to the Z disc. Thick filaments
contain ATPases, myosin and does not lie in the I band.
What are the sites called where the motor nerve impulse is transmitted from the
nerve endings to the skeletal muscle cell membranes?
neuromuscular junctions
sarcomeres
, myofilaments
Z discs - CORRECT ANSWER- A) neuromuscular junctions
What is the connective tissue covering that encloses the sarcolemma of
an individual muscle fiber?
epimysium
perimysium
endomysium
periosteum - CORRECT ANSWER- C) endomysium
What is a fascicle?
muscle
bundle of muscle fibers enclosed by a connective tissue sheath
bundle of myofibrils
group of myofilaments - CORRECT ANSWER-B) bundle of muscle fibers
enclosed by a connective tissue sheath
What is a contraction elicited by a single brief stimulus called?
a twitch
wave summation
, multiple motor unit summation
fused tetanus - CORRECT ANSWER- A) a twitch
What is the function of T tubules in muscle contraction?
make and store glycogen
release CA2+ into the cell interior and then pick it up again
transmit action potential deep into the muscle cells
form proteins - CORRECT ANSWER- C) transmit action potential deep into
the muscle cells
What is a smooth sustained contraction called that result from very
rapid stimulation of the muscle, in which no relaxation is seen?
a twitch
wave summation
multiple motor unit summation
fused tetanus - CORRECT ANSWER- D) fused tetanus
Characteristics of isometric contractions include all of the following except?
A) shortening
, increased muscle tension throughout the contraction phase
absence of shortening
use in resistance training - CORRECT ANSWER- A) shortening
During muscle contraction, ATP is provided by (A) a coupled reaction of creatine
phosphate with ADP (B) aerobic respiration of glucose, and (C) anaerobic
glycolysis? (multiple answers may apply)
Provides ATP fastest?
Does/do not require that oxygen be available?
Highest yield of ATP per glucose molecule?
Results in the formation of lactic acid?
Has carbon dioxide and water products?
Most important in endurance sports? - CORRECT ANSWER- 1) A) a
coupled reaction of creatine phosphate with ADP
A) a coupled reaction of creatine phosphate with ADP
and C) anaerobic glycolysis
B) aerobic respiration of glucose
C) anaerobic glycolysis
B) aerobic respiration of glucose
B) aerobic respiration of glucose
What is the neurotransmitter released by somatic motor neurons called?
AND PHYSIOLOGY EXAM QUESTIONS AND ANSWERS
What are the differences, if any, in the composition for thick and
thin myofilaments?
Thin filaments contain actin, troponin and attach to the Z disc.
Thick filaments contain ATPases, myosin and does not lie in the I band.
Thick and thin filaments generally have the same composition.
Both A and B are correct. - CORRECT ANSWER-D) Both A and B are correct.
Thin filaments contain actin, troponin and attach to the Z disc. Thick filaments
contain ATPases, myosin and does not lie in the I band.
What are the sites called where the motor nerve impulse is transmitted from the
nerve endings to the skeletal muscle cell membranes?
neuromuscular junctions
sarcomeres
, myofilaments
Z discs - CORRECT ANSWER- A) neuromuscular junctions
What is the connective tissue covering that encloses the sarcolemma of
an individual muscle fiber?
epimysium
perimysium
endomysium
periosteum - CORRECT ANSWER- C) endomysium
What is a fascicle?
muscle
bundle of muscle fibers enclosed by a connective tissue sheath
bundle of myofibrils
group of myofilaments - CORRECT ANSWER-B) bundle of muscle fibers
enclosed by a connective tissue sheath
What is a contraction elicited by a single brief stimulus called?
a twitch
wave summation
, multiple motor unit summation
fused tetanus - CORRECT ANSWER- A) a twitch
What is the function of T tubules in muscle contraction?
make and store glycogen
release CA2+ into the cell interior and then pick it up again
transmit action potential deep into the muscle cells
form proteins - CORRECT ANSWER- C) transmit action potential deep into
the muscle cells
What is a smooth sustained contraction called that result from very
rapid stimulation of the muscle, in which no relaxation is seen?
a twitch
wave summation
multiple motor unit summation
fused tetanus - CORRECT ANSWER- D) fused tetanus
Characteristics of isometric contractions include all of the following except?
A) shortening
, increased muscle tension throughout the contraction phase
absence of shortening
use in resistance training - CORRECT ANSWER- A) shortening
During muscle contraction, ATP is provided by (A) a coupled reaction of creatine
phosphate with ADP (B) aerobic respiration of glucose, and (C) anaerobic
glycolysis? (multiple answers may apply)
Provides ATP fastest?
Does/do not require that oxygen be available?
Highest yield of ATP per glucose molecule?
Results in the formation of lactic acid?
Has carbon dioxide and water products?
Most important in endurance sports? - CORRECT ANSWER- 1) A) a
coupled reaction of creatine phosphate with ADP
A) a coupled reaction of creatine phosphate with ADP
and C) anaerobic glycolysis
B) aerobic respiration of glucose
C) anaerobic glycolysis
B) aerobic respiration of glucose
B) aerobic respiration of glucose
What is the neurotransmitter released by somatic motor neurons called?
