BIOD 121 MODULE 2 EXAM SUMMER 2026 COMPLETE QUESTIONS AND ANSWERS GRADED A+ FULL

BIOD 121 MODULE 2 EXAM SUMMER 2026
COMPLETE QUESTIONS AND ANSWERS
GRADED A+ FULL

◉ Lymphatic system. Answer: Returns leaked interstitial fluid to the
bloodstream


◉ Primary function of the heart. Answer: Acts as a pump to create
pressure gradients


◉ Mediastinum. Answer: Central thoracic cavity between the lungs


◉ Apex of the heart. Answer: Inferior tip at the 5th intercostal space


◉ Base of the heart. Answer: Superior portion near the 2nd
intercostal space


◉ Pericardium. Answer: Double-layered sac surrounding the heart


◉ Fibrous pericardium. Answer: Tough outer layer preventing
overfilling

, ◉ Serous pericardium. Answer: Thin membrane of simple squamous
epithelium


◉ Parietal pericardium. Answer: Outer serous layer lining fibrous
pericardium


◉ Visceral pericardium. Answer: Inner serous layer covering the
heart


◉ Epicardium. Answer: Visceral pericardium and outer heart wall
layer


◉ Myocardium. Answer: Cardiac muscle layer responsible for
contraction


◉ Endocardium. Answer: Smooth endothelial lining of chambers
and valves


◉ Atria. Answer: Receiving chambers of the heart


◉ Ventricles. Answer: Pumping chambers of the heart


◉ Interatrial septum. Answer: Wall separating the atria