Cortisol inhibits glucose uptake and use by many tissues, including the brain
a. True
b. False
Indicate whether the statement is true or false
False
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The aortic arch sweeps
A. from right to left in a posterior direction. B. from left to right in a posterior direction. C. from right to left in an anterior direction. D. from left to right in an anterior direction.
Which of the following pairs of terms are opposites?
A. Elevation - protraction B. Inversion - retraction C. Plantar flexion - dorsiflexion D. Pronation - rotation E. Abduction - extension
Which is a TRUE statement about excitation-contraction coupling?
A. In skeletal muscle cells, it requires the influx of extracellular calcium ion. B. In smooth muscle cells, it must be preceded by an action potential in the cell membrane. C. In all kinds of muscle it requires the entry of calcium from the extracellular fluid. D. Calcium-induced calcium-release plays a role in cardiac muscle cells, as well as in some smooth muscle cells. E. In skeletal muscle cells, excitation-contraction coupling begins when an action potential propagates along the sarcoplasmic reticulum membrane.
Which of the following is not true of elastic filaments?
A. They run through the core of thin myofilaments. B. They are composed of titin. C. They attach to Z discs. D. They help to stabilize thick myofilaments. E. They prevent overstretching of muscle fibers.