A group of nursing students are reviewing the medications used to treat asthma. The students demonstrate understanding of the information when they identify which agent as appropriate for an acute episode of bronchospasm?
A) Salmeterol
B) Albuterol
C) Ipratropium
D) Cromolyn

B) Albuterol

Explanation:

Albuterol, which is also known as Salbutamol, is a short-acting bronchodilator that produces quick relief to the spasm of bronchial smooth muscle that causes shortness of breath during asthma attack. Albuterol relaxes the bronchial smooth muscle, which leads to the opening of breathing passages.  

Identifying this agent shows the student understood the information about medications used for treating asthma.

wheres the answers ?

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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