A spirometry test should be repeated _______ times successfully in order to calculate the patient's pulmonary function

The outermost layer surrounding the cerebrum is called the cerebral cortex. Composed of gray matter and containing neuron cell bodies and dendrites, the cortex contains ________ percent of all neurons in the nervous system

a. 25 b. 50 c. 75 d. 90

Which of the following is part of the sanitization of equipment?

A. boiling instruments in boiling water B. scrubbing instruments with steel wool C. soaking instruments in detergent solution D. placing all instruments together when sanitizing them