A nurse is preparing to administer amoxicillin 250 mg PO. Available is amoxicillin oral suspension 125 mg/5 mL. How many ml. should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

A. The nose and paranasal sinuses: This is partially correct, but it does not include all the structures of the upper respiratory tract. It misses the nasal cavity and the pharynx.
B. The nose, nasal cavity, pharynx, and the lungs: This is incorrect because the lungs are part of the lower respiratory tract, not the upper respiratory tract.
C. The nose, nasal cavity, pharynx, and paranasal sinuses: This is the correct answer. The upper respiratory tract includes the nose, nasal cavity, pharynx, and paranasal sinuses. These structures are involved in air conduction, filtration, humidification, and protection.
D. The lungs and associated structures: This is incorrect as the lungs are part of the lower respiratory tract, which also includes the bronchi and bronchioles.

A. The amount of blood pumped by the heart through the circulatory system in 1 minute. This statement describes cardiac output, which is unrelated to digestion. It refers to the volume of blood the heart pumps per minute.
B. Neutralization by use of bicarbonate from pancreatic and biliary secretions. This statement accurately reflects a component of digestion. Bicarbonate from the pancreas and biliary secretions neutralizes stomach acid in the small intestine, creating an optimal pH for digestive enzymes.
C. Smooth muscle movement of the GI tract by way of contractions. This statement describes peristalsis, the wave-like contractions that move food through the digestive tract. While peristalsis is essential for digestion, it does not explain the process of breaking down food into absorbable molecules.
D. It is the process when food is broken down into molecules that can be absorbed. This statement accurately defines digestion. It describes the process by which food is broken down into smaller molecules that can be absorbed into the bloodstream and used by the body.