RIO SALADO BIO 201
ANATOMY &
PHYSIOLOGY A+ FINAL
QUESTIONS AND
CORRECT ANSWERS.
,Characteristics of isometric contractions include all of the following except?
A) shortening
B) increased muscle tension throughout the contraction phase
C) absence of shortening
D) 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)
1) Provides ATP fastest?
2) Does/do not require that oxygen be available?
3) Highest yield of ATP per glucose molecule?
4) Results in the formation of lactic acid?
5) Has carbon dioxide and water products?
6) Most important in endurance sports? - correct answer-1) A) a coupled reaction of creatine
phosphate with ADP
2) A) a coupled reaction of creatine phosphate with ADP
and C) anaerobic glycolysis
3) B) aerobic respiration of glucose
4) C) anaerobic glycolysis
5) B) aerobic respiration of glucose
6) B) aerobic respiration of glucose
What is the neurotransmitter released by somatic motor neurons called?
A) acetylcholine
,B) acetylcholinesterase
C) norepinepherine - correct answer-A) acetylcholine
What is the connective tissue covering that encloses the sarcolemma of an individual
muscle fiber?
A) epimysium
B) perimysium
C) endomysium
D) periosteum - correct answer-C) endomysium
What is a fascicle?
A) muscle
B) bundle of muscle fibers enclosed by a connective tissue sheath
C) bundle of myofibrils
D) group of myofilaments - correct answer-B) bundle of muscle fibers enclosed by a connective
tissue sheath
What are the differences, if any, in the composition for thick and thin myofilaments?
A) Thin filaments contain actin, troponin and attach to the Z disc.
B) Thick filaments contain ATPases, myosin and does not lie in the I band.
C) Thick and thin filaments generally have the same composition.
D) 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?
, A) neuromuscular junctions
B) sarcomeres
C) myofilaments
D) Z discs - correct answer-A) neuromuscular junctions
What is a contraction elicited by a single brief stimulus called?
A) a twitch
B) wave summation
C) multiple motor unit summation
D) fused tetanus - correct answer-A) a twitch
What is the function of T tubules in muscle contraction?
A) make and store glycogen
B) release CA2+ into the cell interior and then pick it up again
C) transmit action potential deep into the muscle cells
D) 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) a twitch
B) wave summation
C) multiple motor unit summation
D) fused tetanus - correct answer-D) fused tetanus
ANATOMY &
PHYSIOLOGY A+ FINAL
QUESTIONS AND
CORRECT ANSWERS.
,Characteristics of isometric contractions include all of the following except?
A) shortening
B) increased muscle tension throughout the contraction phase
C) absence of shortening
D) 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)
1) Provides ATP fastest?
2) Does/do not require that oxygen be available?
3) Highest yield of ATP per glucose molecule?
4) Results in the formation of lactic acid?
5) Has carbon dioxide and water products?
6) Most important in endurance sports? - correct answer-1) A) a coupled reaction of creatine
phosphate with ADP
2) A) a coupled reaction of creatine phosphate with ADP
and C) anaerobic glycolysis
3) B) aerobic respiration of glucose
4) C) anaerobic glycolysis
5) B) aerobic respiration of glucose
6) B) aerobic respiration of glucose
What is the neurotransmitter released by somatic motor neurons called?
A) acetylcholine
,B) acetylcholinesterase
C) norepinepherine - correct answer-A) acetylcholine
What is the connective tissue covering that encloses the sarcolemma of an individual
muscle fiber?
A) epimysium
B) perimysium
C) endomysium
D) periosteum - correct answer-C) endomysium
What is a fascicle?
A) muscle
B) bundle of muscle fibers enclosed by a connective tissue sheath
C) bundle of myofibrils
D) group of myofilaments - correct answer-B) bundle of muscle fibers enclosed by a connective
tissue sheath
What are the differences, if any, in the composition for thick and thin myofilaments?
A) Thin filaments contain actin, troponin and attach to the Z disc.
B) Thick filaments contain ATPases, myosin and does not lie in the I band.
C) Thick and thin filaments generally have the same composition.
D) 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?
, A) neuromuscular junctions
B) sarcomeres
C) myofilaments
D) Z discs - correct answer-A) neuromuscular junctions
What is a contraction elicited by a single brief stimulus called?
A) a twitch
B) wave summation
C) multiple motor unit summation
D) fused tetanus - correct answer-A) a twitch
What is the function of T tubules in muscle contraction?
A) make and store glycogen
B) release CA2+ into the cell interior and then pick it up again
C) transmit action potential deep into the muscle cells
D) 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) a twitch
B) wave summation
C) multiple motor unit summation
D) fused tetanus - correct answer-D) fused tetanus
