BIO 117 EXAM 2 2026 INTRODUCTORY BIOLOGY ASSESSMENT QUESTIONS SOLUTIONS GRADED A+

BIO 117 EXAM 2 2026 INTRODUCTORY
BIOLOGY ASSESSMENT QUESTIONS
SOLUTIONS GRADED A+


◉ Which layer of the heart allows it to act as a pump?
Answer: Myocardium


◉ What is the apex of the heart?
Answer: The tip of the heart, pointing down towards the left 5th
intercostal space.


◉ Which layer of the heart wall contains the epicardium?
Answer: Pericardium


◉ What surrounds the heart?
Answer: Pericardium


◉ What is related to the mitral valve (tricuspid valve)?
Answer: Bicuspid valve


◉ Which of the following contains oxygenated blood?

, Answer: Left Atrium, Pulmonary veins, Aorta


◉ Which of the following contains deoxygenated blood?
Answer: Superior Vena Cava, Right Atrium, Pulmonary Arteries


◉ What supplies oxygenated blood to the heart muscle?
Answer: Coronary Arteries


◉ Which layer of the heart contains actin, myosin, and troponin?
Answer: Myocardium


◉ Which valves are open during atrial systole?
Answer: Tricuspid Mitral


◉ What is true of blood leaving the tissues and traveling towards the
right atrium?
Answer: Oxygen poor, carbon dioxide rich


◉ Valve that prevents backflow of blood into the left ventricle when
the left ventricle is in diastole?
Answer: Aortic