D312 SCIE 1011 Anatomy & Physiology I with Lab Final Exam Review Q & A 2026 Complete And Study material 16pages LEARNEXAMS

1. Which of the following structures is responsible for the exchange of gases in the lungs? A. Alveoli B. Bronchi C. Trachea D. Diaphragm Answer: A. Alveoli Rationale: Alveoli are the tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide occurs, which is essential for respiration. 2. The movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration is known as: A. Osmosis B. Diffusion C. Filtration D. Active transport Answer: A. Osmosis Rationale: Osmosis is the process by which water moves through a semipermeable membrane, balancing solute concentrations on both sides of the membrane. 3. Which hormone regulates calcium levels in the blood? A. Insulin B. Thyroxine C. Parathyroid hormone D. Cortisol Answer: C. Parathyroid hormone Rationale: The parathyroid hormone is secreted by the parathyroid glands and plays a critical role in regulating serum calcium levels. 4. During the cardiac cycle, the period of ventricular relaxation is called: A. Systole B. Diastole C. Isometric relaxation D. Ventricular ejection Answer: B. Diastole