The latch property of smooth muscle refers to the ability of the smooth muscle to:
A. maintain a relaxed state independent of cytosolic Ca++ level
B. maintain force while decreasing the rate of energy utilization
C. maintain the rate of InsP3 production after agonist removal
D. maintain force in the absence of myosin light-chain phosphorylation
E. maintain membrane potential independent of contractile state
ANS: B
You might also like to view...
Which cells are responsible for detecting strain in bone and stimulating osteoblasts activity?
A. Osteocytes B. Osteoprogenitor cells C. B cells D. Osteoclasts E. Resorption cells
__________ means on the same side
Fill in the blank(s) with correct word
The ventral and dorsi rami of each spinal nerve contain both sensory and motor nerves
Indicate whether the statement is true or false
Which of the following statements regarding whole-muscle contraction is TRUE?
A. The order of recruitment of motor units in a muscle is such that the last units recruited are those that fatigue most readily. B. The order of recruitment of motor units in a muscle is such that the first units recruited generate the most tension. C. Motor units whose motor neurons have large-diameter cell bodies are recruited first, while motor units with smaller-diameter motor neurons are only activated as the level of activation in the spinal cord increases. D. The order of motor unit recruitment is independent of the size of the alpha motor neuron that innervates them. E. Recruitment of one fast-glycolytic motor unit provides a smaller increment in whole-muscle tension than recruitment of one slow-oxidative motor unit.