Release of crossbridges and a decline in muscle tension characterize the ________ period of a twitch.
A. latent
B. contraction
C. relaxation
Answer: C
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Which segment of the renal tubule acts as a countercurrent multiplier?
a) collecting duct b) nephron loop c) convoluted tubule
Which of the following statements is false concerning the movement of fluid between capillaries and interstitial space?
A) Blood hydrostatic pressure forces fluid from the capillary to the interstitial space. B) Blood osmotic pressure moves fluid from the interstitial space to the capillary. C) The osmotic pressure of the interstitial fluid is less than the blood osmotic pressure. D) The hydrostatic pressure of the interstitial fluid is largely unimportant in determining fluid movement. E) The net filtration pressure is usually zero.
What is an oxygen deficit?
A. After exercise, the O2 taken in that exceeds the O2 required for resting metabolism B. A T tubule and two adjacent terminal cisternae C. A protein found along the groove of the F-actin double helix D. The movement of myosin head while attached to actin myofilament E. The combination of myosin heads with active sites on actin molecules
List the arrangement of components found in a third-class lever
A. weight-fulcrum-pull B. fulcrum-pull-weight C. fulcrum-weight-pull