Bio 253 Exam #3 Practice Questions with 100% Correct Answers
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Course
Bio 253
Institution
Bio 253
Bio 253 Exam #3 Practice Questions
with 100% Correct Answers
what structure in skeletal muscle permits action potentials to penetrate
deep into the muscle cell? - Answer️️ -T-tubules
what molecule initiates cross bridge cycling in skeletal muscle by binding
to troponin? - Answer️️ -Ca+...
Bio 253 Exam #3 Practice Questions
with 100% Correct Answers
what structure in skeletal muscle permits action potentials to penetrate
deep into the muscle cell? - Answer✔️✔️-T-tubules
what molecule initiates cross bridge cycling in skeletal muscle by binding
to troponin? - Answer✔️✔️-Ca++
the link between actin and myosin in skeletal muscle is broken when the
myosin head binds a molecule of ____ - Answer✔️✔️-ATP
During skeletal muscle contractions, factor(s) that influence whole muscle
tension are ____, _____, ____ - Answer✔️✔️-# of motor unit recruited, length
of fiber at onset of contraction, frequency of stimulation
creatine phosphate is an important source of skeletal muscle ATP because -
Answer✔️✔️-it is catalyzed in the presence of ADP to produce creatine and
ATP
Which of the following statements about tetanus is true? - Answer✔️✔️-it is
a contraction of maximum strength, all fibers in a muscle are recruited
during tetanus, a maximum number of cross bridge sites are uncovered
during smooth muscle contraction, Ca++ activates? - Answer✔️✔️-
calmodulin
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