Occlusion of which of the following would primarily damage the posterior wall of the heart?
A. circumflex artery
B. pulmonary artery
C. right marginal artery
D. coronary sinus artery
E. right coronary artery
A
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X, Y, and Z are adjacent sensory receptors in the skin. During administration of the flu shot, a needle is inserted in the middle of Y's receptive field. All three receptors are activated. Which of the following is likely to be true?
A. The receptor potential in neurons X and Z will be more depolarized than in neuron Y. B. It won't be possible to discriminate which neuron's receptive field was stimulated at its center. C. The frequency of action potentials in the afferent pathway from neuron Y will be increased by excitatory interneurons projecting from the afferent pathways from neurons X and Z. D. The receptor potentials in all three neurons will achieve the same, average value. E. The frequency of action potentials in neuron Y will be greater than that in neurons X and Z.
NE can cause inhibition of certain effectors by functioning as an autonomic antagonist
Indicate whether the statement is true or false
Salivary amylase is deactivated by ________ in the stomach.
A. lipase B. bicarbonate ions C. hydrochloric acid D. pepsinogen E. bile
A median plane divides the body into _________.
What will be an ideal response?