Choose the description of an event that does NOT occur during the cross bridge cycle.
A. Energized myosin heads bind troponin.
B. A new ATP binding causes cross bridges to release.
C. ADP is released at the end of the power stroke.
D. ATP hydrolysis allows for cross bridge formation.
Answer: A
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A drug that decreased calcium levels in a muscle cell and thereby lowered the number of crossbridges formed during the heart's contractions would be a
A. positive chronotropic agent. B. negative chronotropic agent. C. positive inotropic agent. D. negative inotropic agent.
What are the three main components of the circulatory system?
a. heart, arteries, and veins b. heart, blood, and lymph c. heart, blood vessels, and blood d. heart, blood vessels, and lungs e. smooth muscle, blood, and blood vessels
The spinocerebellar pathway carries ________ information to the cerebellum for processing.
Fill in the blank(s) with the appropriate word(s).
Food is prevented from going into the larynx by the ____________
Fill in the blank(s) with correct word