Why is the osmotic pressure higher in the blood compared to that in the surrounding interstitial fluid?
A) Interstitial fluid contains more dissolved proteins than blood.
B) Blood has lower solute concentrations.
C) Interstitial fluid has higher solute concentrations.
D) There are equal concentrations of dissolved proteins in blood and interstitial fluid.
E) Blood contains more dissolved proteins than does interstitial fluid.
E) Blood contains more dissolved proteins than does interstitial fluid.
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Match the response with the type of chemical.
1. blocks secretion of pancreatic enzymes 2. blocks secretion of adrenal catecholamines 3. blocks urination 4. blocks urination A. sympathetic antagonist B. parasympathetic antagonist
The movement of glucose across a plasma membrane is achieved by
A. ion pumps. B. receptor-mediated exocytosis. C. osmosis. D. phagocytosis. E. facilitated diffusion.
The most common neurotransmitter in the brain is ________.
A. serotonin B. GABA C. acetylcholine D. glycine
What is the best description of a tetanic contraction in a skeletal muscle cell?
A. A single action potential in the motor neuron causes a sustained contraction. B. Multiple action potentials in the motor neuron cause a sustained contraction. C. The action potential in the muscle cell is prolonged to last as long as the contraction. D. Repeated action potentials from the motor neuron summate into a sustained depolarization of the motor end plate, causing a sustained contraction. E. A very large amplitude action potential in the motor neuron causes a very strong contraction in the skeletal muscle cell.