Vitamin D must be provided entirely by dietary sources
Indicate whether the statement is true or false
F
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Which cell type is the most numerous in the epidermis?
A. Keratinocytes B. Langerhans cells C. Merkel cells D. Melanocytes
Explain what is meant by the terms respiratory pump and skeletal muscle pump. Why are these important to the cardiovascular system?
What will be an ideal response?
Why is the resting membrane potential negatively charged?
A. More sodium ions leak out of the neuron than move in B. More potassium ions leak out the neuron than move in C. More potassium ions move into the neuron than leak out D. Both sodium and potassium ions constantly move into the cell
The filtration coefficient (Kf)
a. is affected by the contractile activity of the filtration membrane. b. is affected by the amount of K+ in the filtrate.. c. is inversely related to GFR which means when Kf decreases the GFR increases. d. is regulated by the parasympathetic nervous system. e. all of these.