ANS __2024

1. Which is correct regarding the sympathetic nervous system?

• 1. It generally mediates body functions in “rest- and-digest” mode.

• Sympathetic neurons release norepinephrine (NE)in the effector organs.

• The neurotransmitter at the sympathetic ganglion is norepinephrine (NE).

• 1. Sympathetic neurons release ACh in the effector organs.

1. Which physiological change occurs when the parasympathetic system is activated?

• 0. Increase in heart rate
     

• 0. decrease salivation

• 0. Dilation of the pupil (mydriasis)

• 0. Increase in gastric motility

1. Which physiological change is expected when the sympathetic system is inhibited using a pharmacological agent?

• 0. Reduction in heart rate
     

• 0. Increase in blood pressure

• 0. Decrease in fluid secretions

• 0. Constriction of blood vessels

1. Which is correct regarding activation of receptors on the effector organs in the ANS?

• 1. A. Acetylcholine activates muscarinic receptors.

• 1. B. Acetylcholine activates adrenergic receptors.

• 1. C. Epinephrine activates nicotinic receptors.
     

• 1. D. Norepinephrine activates muscarinic receptors.

A woman is treated with an agent that inhibits the release of acetylcholine.

Which side effect is most likely to occur in this patient

• bradycardia

• constriction of the pupils

• dry mouth
  

• diarrhea