A blood pH of 7.2 inhibits the respiratory center in the brainstem and decreases CO2 level.
Answer the following statement true (T) or false (F)
False
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What happens immediately after an action potential reaches the presynaptic membrane at a chemical synapse?
A) A calcium influx triggers the release of neurotransmitters. B) Neurotransmitters binds to receptors on the postsynaptic neuron. C) Sodium rushes into the postsynaptic neuron. D) Sodium rushes out of the presynaptic neuron.
All of the following are layers of hair except which one?
A. Inner medulla B. Outer cortex C. Outer cuticle D. Middle cortex
Chemoreceptors are located in all of the following except
A) carotid bodies. B) aortic bodies. C) the skin. D) the organs of taste. E) the organs of smell.
If the beta cells of the pancreas were destroyed, which hormone would no longer be secreted?
A. Adrenocorticotropin B. Gastrin C. Somatotropin D. Glucagon E. Insulin