What layer of the skin forms a watertight, protective seal for the body?
A. dermis
B. epidermis
C. muscular layer
D. subcutaneous layer
Answer: B. epidermis
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Secretion of atrial natriuretic peptide
A. increases potassium excretion. B. decreases sodium excretion. C. increases sodium excretion. D. decreases potassium excretion.
The modality of a stimulus can be determined within the central nervous system by
A) lateral inhibition. B) frequency coding. C) population coding. D) adequate stimulus for the sensory receptor cell.
A local increase in potassium increases the vasodilation of arterioles
Indicate whether the statement is true or false
Which statement accurately describes amino acids?
A. There are twenty varieties, with each type having a different C-terminal end. B. There are twenty varieties, with each type having a different R group. C. There are over 200 varieties, with each type having a different C-terminal end. D. There are over 200 varieties, with each type having a different R group.