The cerebral cortex contains ________ percent of all neurons in the nervous system.

The general term for education beyond entry-level, often needed for renewal of licenses and membership in professional organizations, is:

A) Certification B) Hands-on workshops C) Specialty education D) Continuing education

Which of the following is the most important determinant of ventilatory rate?

A) Arterial PO2 B) Venous PCO2 C) Venous PO2 D) Arterial PCO2