____________________ means that documents are filed with the oldest date on top or in the front of the file, and later dates are filed behind

When performing orotracheal suctioning in an adult patient, the suction should be applied for no longer than how many seconds?

A) 10 B) 15 C) 20 D) 30

Chemicals that relay electrically conducted signals from one neuron to another are called:

A) hormones. B) endorphins. C) catecholamines. D) neurotransmitters.