The voltage-gated Na+ channels _____ when the cell reaches +30 mV
What will be an ideal response?
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In a child, a vitamin D deficiency results in ______, whereas a vitamin A deficiency
results in ______. A) excess calcium absorption; osteomalacia B) rickets; retardation of bone development C) soft bones; rickets D) pituitary dwarfism; rickets
________ glands (such as tear glands) have vesicles that release their secretion via exocytosis. ________ glands (such as oil-producing glands) secrete a mixture of disintegrated cells and their products.
A. Endocrine; Exocrine B. Exocrine; Apocrine C. Mucous; Cutaneous D. Mucous; Serous E. Merocrine; Holocrine
The frontal plane passes vertically through the body or an organ and divides it into equal right and left portions
Indicate whether the statement is true or false
What effect does thyroid hormone have on the body's metabolic rate?
a) it has no effect b) it increases it c) it decreases it