Action potentials are initiated at the motor end-plate region of skeletal muscle fibers
Indicate whether the statement is true or false
F
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The dura mater surrounding the brain consists of two layers. Give a functional reason for the fact that there are two layers instead of only one.
A. The two layers form a stronger blood-brain barrier. B. Arteries are sandwiched between the layers. C. Spaces between layers collect blood for return to the venous system. D. The spaces are where cerebrospinal fluid is reabsorbed. E. Fluid between the layers reduces friction.
Balding men have tried all kinds of remedies, including hair transplants, to restore their lost locks. Explain the cause of male pattern baldness.
What will be an ideal response?
If cardiac muscle is deprived of its normal blood supply, damage would primarily result from ________.
A) decreased delivery of oxygen B) a decrease in the number of available mitochondria for energy production C) a lack of nutrients to feed into metabolic pathways D) an inadequate supply of lactic acid
When the bladder is relaxed, its mucosa has conspicuous wrinkles called ____________________.
Fill in the blank(s) with the appropriate word(s).