Soal Latihan Sistem Peredaran Darah Sub Materi Alat Peredaran Darah Kelas VIII

Explanation
The correct answer is Perikardium. The question asks for the outer layer of the heart, which is called the pericardium. The pericardium is a membrane that surrounds and protects the heart. It consists of two layers, the fibrous pericardium, which is the tough outer layer, and the serous pericardium, which is the inner layer. The pericardium helps to prevent the heart from overfilling with blood and provides a lubricated surface for the heart to beat against.

Explanation
The correct answer is Aorta, arteri pulmonalis, arteri koroner. This is because the image shows the heart, and the arteries that are being pointed out by numbers 1, 2, and 3 respectively are the aorta, the pulmonary artery (arteri pulmonalis), and the coronary artery (arteri koroner).

Explanation
The correct answer is Arteri pulmonalis. Arteri pulmonalis is the artery that carries deoxygenated blood rich in carbon dioxide from the heart to the lungs for oxygenation. This artery is responsible for transporting the blood from the right ventricle of the heart to the lungs, where carbon dioxide is exchanged for oxygen.

Explanation
The given statement is true. It states that the left atrium and the left ventricle are connected by a two-leaflet valve called the bicuspid valve. This valve, also known as the mitral valve, allows blood to flow from the left atrium to the left ventricle while preventing any backflow.

Explanation
The correct answer is Endotelium, Otot polos, Jaringan ikat. The image shows the layers of an artery, with the innermost layer being the endotelium, followed by the smooth muscle layer (otot polos), and finally the connective tissue layer (jaringan ikat). This arrangement is typical of arterial walls, where the endotelium provides a smooth surface for blood flow, the smooth muscle layer helps regulate blood vessel diameter, and the connective tissue layer provides structural support.

Explanation
The given statement is incorrect. The correct function of the semilunar valves (aortic and pulmonary valves) is to prevent the backflow of blood from the ventricles into the aorta and pulmonary artery respectively. Therefore, the statement that the semilunar valves prevent the backflow of blood from the aorta and right pulmonary artery into the ventricles is incorrect.