1
APHY 102 Heart 2026 Latest
Questions and Answers (100% Expert
Answers) A+
Pericardium layers [ Ans: ] 1. Fibrous pericardium (outer tough layer); 2.
Serous pericardium (parietal & visceral layers) with pericardial cavity and
fluid to reduce friction.
Heart wall layers [ Ans: ] Epicardium (outer), Myocardium (muscular
middle), Endocardium (inner smooth lining).
How myocardium gets oxygen [ Ans: ] Nourished by coronary circulation
via right and left coronary arteries from the aorta.
Right atrium [ Ans: ] Receives deoxygenated blood from SVC, IVC, and
coronary sinus; sends it through tricuspid valve to right ventricle.
© 2026
Right ventricle [ Ans: ] Pumps deoxygenated blood through pulmonary
semilunar valve to pulmonary trunk and arteries toward lungs.
Pulmonary veins [ Ans: ] Carry oxygenated blood from lungs to left
atrium.
Left atrium [ Ans: ] Receives oxygenated blood; sends it through mitral
(bicuspid) valve to left ventricle.
Left ventricle [ Ans: ] Pumps oxygenated blood through aortic semilunar
valve into aorta; thickest wall for systemic pressure.
Pulmonary circuit [ Ans: ] Right side of heart → lungs → left side;
exchanges CO₂ for O₂.
Systemic circuit [ Ans: ] Left side of heart → body → right side; supplies
O₂ and nutrients.
APHY 102 Heart 2026 Latest
Questions and Answers (100% Expert
Answers) A+
Pericardium layers [ Ans: ] 1. Fibrous pericardium (outer tough layer); 2.
Serous pericardium (parietal & visceral layers) with pericardial cavity and
fluid to reduce friction.
Heart wall layers [ Ans: ] Epicardium (outer), Myocardium (muscular
middle), Endocardium (inner smooth lining).
How myocardium gets oxygen [ Ans: ] Nourished by coronary circulation
via right and left coronary arteries from the aorta.
Right atrium [ Ans: ] Receives deoxygenated blood from SVC, IVC, and
coronary sinus; sends it through tricuspid valve to right ventricle.
© 2026
Right ventricle [ Ans: ] Pumps deoxygenated blood through pulmonary
semilunar valve to pulmonary trunk and arteries toward lungs.
Pulmonary veins [ Ans: ] Carry oxygenated blood from lungs to left
atrium.
Left atrium [ Ans: ] Receives oxygenated blood; sends it through mitral
(bicuspid) valve to left ventricle.
Left ventricle [ Ans: ] Pumps oxygenated blood through aortic semilunar
valve into aorta; thickest wall for systemic pressure.
Pulmonary circuit [ Ans: ] Right side of heart → lungs → left side;
exchanges CO₂ for O₂.
Systemic circuit [ Ans: ] Left side of heart → body → right side; supplies
O₂ and nutrients.
