A solution that has a pH of 2 could best be described as being ________.
A) acidic
B) basic
C) neutral
D) slightly acidic
A) acidic
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Which is a FALSE statement about the cerebrospinal fluid?
A. It has the same composition as blood plasma. B. It circulates within and between brain ventricles and surrounds the spinal cord. C. It is secreted by cells lining the ventricles of the brain. D. It is in diffusion equilibrium with the extracellular fluid of the central nervous system. E. It acts as a cushion for the brain and spinal cord.
Which of the following structures protect the brain by preventing the movement of harmful substances and pathogens from the blood into the brain tissue?
a) Dura mater b) Arachnoid mater c) Cerebrospinal fluid d) Blood brain barrier e) All of these choices
Some thyroid disorders are characterized by an increase in the width of the palpebral fissure. This would be an increase in the distance between the ________.
A. eyes B. eyelashes C. lacrimal glands D. eyelids E. eyebrows
At rest, skeletal muscles receive approximately what percentage of blood pumped by the heart?
A. About 25% B. About 10% C. About 2% D. About 75% E. About 50%