Anatomy and Physiology Exam 4 Review
... - correct answerDiffusion across the cell membrane results in depolarization.
A band - correct answerBoth actin and myosin are found in the ________.
A band - correct answerThe myosin filaments are located in the ________.
Acetylcholine - correct answerA neurotransmitter released at motor end plates by the
axon terminals.
Acetylcholinesterase - correct answerDestroys ACh.
Calcium ions - correct answerServes as the actual "trigger" for muscle contraction by
removing the inhibition of the troponin molecules.
Creatine phosphate - correct answerUsed to convert ADP to ATP by transfer of a high-
energy phosphate group. A reserve high-energy compound.
Creatine phosphate functions in the muscle cell by ________. - correct answerstoring
energy that will be transferred to ADP to resynthesize ATP
Excitation-contraction coupling requires which of the following substances? - correct
answerCa2+ and ATP
Fatigued muscle cells that recover rapidly are the products of ________. - correct
answerintense exercise of short duration
I band - correct answerThe ________ contains only the actin filaments.
Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short
period called the ________ period during which the events of excitation-contraction
coupling occur. - correct answer...
Maximal Stimulus - correct answerThe stimulus above which no stronger contraction
can be elicited, because all motor units are firing in the muscle.
Most skeletal muscles contain ________. - correct answera mixture of fiber types
Multiple motor unit summation - correct answerHow a smooth increase in muscle force
is produced.
Myoglobin ________. - correct answerstores oxygen in muscle cells
Myosin - correct answerThe thicker filaments are the ________ filaments.
... - correct answerDiffusion across the cell membrane results in depolarization.
A band - correct answerBoth actin and myosin are found in the ________.
A band - correct answerThe myosin filaments are located in the ________.
Acetylcholine - correct answerA neurotransmitter released at motor end plates by the
axon terminals.
Acetylcholinesterase - correct answerDestroys ACh.
Calcium ions - correct answerServes as the actual "trigger" for muscle contraction by
removing the inhibition of the troponin molecules.
Creatine phosphate - correct answerUsed to convert ADP to ATP by transfer of a high-
energy phosphate group. A reserve high-energy compound.
Creatine phosphate functions in the muscle cell by ________. - correct answerstoring
energy that will be transferred to ADP to resynthesize ATP
Excitation-contraction coupling requires which of the following substances? - correct
answerCa2+ and ATP
Fatigued muscle cells that recover rapidly are the products of ________. - correct
answerintense exercise of short duration
I band - correct answerThe ________ contains only the actin filaments.
Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short
period called the ________ period during which the events of excitation-contraction
coupling occur. - correct answer...
Maximal Stimulus - correct answerThe stimulus above which no stronger contraction
can be elicited, because all motor units are firing in the muscle.
Most skeletal muscles contain ________. - correct answera mixture of fiber types
Multiple motor unit summation - correct answerHow a smooth increase in muscle force
is produced.
Myoglobin ________. - correct answerstores oxygen in muscle cells
Myosin - correct answerThe thicker filaments are the ________ filaments.
