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
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