MCQ Anatomy(2) PDF

1.What are the two main components of the circulatory system? A) Cardiovascular system and respiratory system B) Cardiovascular system and lymphatic system C) Respiratory system and lymphatic system D) Cardiovascular system and digestive system 2.What does the cardiovascular...

1.What are the two main components of the circulatory system? A) Cardiovascular system and respiratory system B) Cardiovascular system and lymphatic system C) Respiratory system and lymphatic system D) Cardiovascular system and digestive system 2.What does the cardiovascular system consist of? A) Heart, lungs, and blood vessels B) Heart, blood vessels, and blood C) Heart, spleen, and blood vessels D) Heart, blood vessels, and lymph 3.Where is the heart located? A) In the abdominal cavity B) In the cranial cavity C) In the thoracic cavity between the lungs D) In the pelvic cavity 4.What is the function of the pericardium? A) Pumps blood B) Protects and anchors the heart C) Fills the heart with blood D) Provides nutrients to the heart 5.How many layers does the heart wall have? A) Two B) Three C) Four D) Five 6.Which layer of the heart wall is composed of cardiac muscle? A) Epicardium B) Myocardium C) Endocardium D) Pericardium 7.How many chambers does the heart have?  A) Two B) Three C) Four D) Five 8.Which chamber of the heart receives blood from the superior and inferior vena cava? A) Right atrium B) Left atrium C) Right ventricle D) Left ventricle 9.What prevents the backflow of blood in the heart? A) Arteries B) Veins C) Valves D) Capillaries 10.What is the function of the tricuspid valve? A) Prevents backflow of blood into the right atrium B) Prevents backflow of blood into the left atrium C) Prevents backflow of blood into the right ventricle D) Prevents backflow of blood into the left ventricle 11.Which chamber of the heart pumps blood into the pulmonary trunk? A) Right atrium B) Left atrium C) Right ventricle D) Left ventricle 12.Which valve is located between the left atrium and the left ventricle? A) Tricuspid valve B) Pulmonary valve C) Aortic valve D) Mitral (bicuspid) valve 13.Which chamber of the heart pumps blood into the aorta? A) Right atrium B) Left atrium C) Right ventricle D) Left ventricle 14.What is the function of the sinoatrial (SA) node? A) Delivers oxygenated blood to the body B) Sends out a stimulus causing the atria to contract C) Receives deoxygenated blood from the body D) Prevents backflow of blood in the heart 15.Which vessels carry blood away from the heart? A) Veins B) Capillaries C) Arteries D) Lymphatic vessels 16.Where does the exchange of gases and nutrients occur? A) Arteries B) Veins C) Capillaries D) Lymphatic vessels 17.What is the largest artery in the systemic circuit? A) Pulmonary artery B) Coronary artery C) Carotid artery D) Aorta 18.What is the role of the pulmonary veins? A) Carry deoxygenated blood to the heart B) Carry oxygenated blood to the heart C) Carry oxygenated blood to the lungs D) Carry deoxygenated blood to the lungs 19.What prevents the backflow of blood into the right ventricle?  A) Aortic valve B) Mitral valve C) Pulmonary valve D) Tricuspid valve 20.Which chamber of the heart receives oxygen-rich blood from the pulmonary veins? A) Right atrium B) Left atrium C) Right ventricle D) Left ventricle 21.Where does the coronary sinus drain? A) Left atrium B) Right atrium C) Left ventricle D) Right ventricle 22.Which artery supplies blood to the heart itself? A) Pulmonary artery B) Coronary artery C) Carotid artery D) Subclavian artery 23.What is the primary function of the atrioventricular (AV) node? A) Sends out a stimulus causing the atria to contract B) Signals the ventricles to contract C) Prevents backflow of blood into the atria D) Pumps blood into the arteries 24.What type of blood vessels are the superior and inferior vena cava? A) Arteries B) Capillaries C) Veins D) Lymphatic vessels 25.Which blood vessels are part of the pulmonary circuit?  A) Aorta and vena cava B) Coronary arteries and veins C) Pulmonary arteries and veins D) Carotid arteries and jugular veins 26.What is the function of the hepatic portal system? A) Supplies blood to the liver B) Drains blood from the liver C) Connects capillaries of the digestive organs to the liver D) Carries oxygenated blood to the heart 27.In fetal circulation, what bypasses the lungs? A) Foramen ovale and ductus arteriosus B) Foramen ovale and ductus venosus C) Ductus arteriosus and ductus venosus D) Umbilical arteries and veins 28.Which vessels carry blood to the placenta in fetal circulation? A) Pulmonary arteries B) Coronary arteries C) Umbilical arteries D) Hepatic arteries 29.What does the right ventricle pump blood into? A) Pulmonary veins B) Pulmonary trunk C) Aorta D) Coronary sinus 30.Which vessels return blood to the heart? A) Arteries B) Capillaries C) Veins D) Lymphatic vessels 31.Which layer of the pericardium is fused to the fibrous pericardium?  A) Parietal layer B) Visceral layer C) Epicardium D) Myocardium 32.What is the space between the layers of the serous pericardium called? A) Pericardial cavity B) Peritoneal cavity C) Pleural cavity D) Epicardial cavity 33.Which veins collect blood from the lower body regions? A) Superior vena cava B) Inferior vena cava C) Pulmonary veins D) Coronary veins 34.What is the function of the chordae tendineae? A) Connect the atria and ventricles B) Prevent valve prolapse by anchoring the valve cusps C) Pump blood into the arteries D) Generate electrical impulses 35.Which arteries branch off the ascending aorta? A) Pulmonary arteries B) Coronary arteries C) Carotid arteries D) Subclavian arteries 36.Which valve prevents the backflow of blood into the left ventricle? A) Pulmonary valve B) Tricuspid valve C) Aortic valve D) Mitral valve 37.What is the thickest layer of the heart wall?  A) Epicardium B) Myocardium C) Endocardium D) Pericardium 38.Which veins drain blood from the brain, head, and neck? A) Pulmonary veins B) Jugular veins C) Coronary veins D) Iliac veins 39.What is the primary function of capillaries? A) Transport blood away from the heart B) Exchange gases and nutrients with tissues C) Return blood to the heart D) Store blood 40.What prevents overfilling of the heart with blood? A) Epicardium B) Myocardium C) Endocardium D) Pericardium 41.Which chamber of the heart has the thickest wall? A) Right atrium B) Left atrium C) Right ventricle D) Left ventricle 42.Which structure in the heart serves as the pacemaker? A) Atrioventricular (AV) node B) Sinoatrial (SA) node C) Bundle of His D) Purkinje fibers 43.What is the role of the pulmonary semilunar valve? A) Prevents backflow of blood into the left atrium B) Prevents backflow of blood into the right ventricle  C) Prevents backflow of blood into the pulmonary veins D) Prevents backflow of blood into the left ventricle 44.Which chamber of the heart receives deoxygenated blood from the body? A) Right atrium B) Left atrium C) Right ventricle D) Left ventricle 45.What is the purpose of the ductus arteriosus in fetal circulation? A) Connects the right and left atria B) Connects the right ventricle to the aorta C) Carries blood to the placenta D) Returns blood from the placenta 1)B 16)C 31)A 2)B 17)D 32)A 3)C 18)B 33)B 4)B 19)C 34)B 5)B 20)B 35)B 6)B 21)B 36)C 7)C 22)B 37)B 8)A 23)B 38)B 9)C 24)C 39)B 10)A 25)C 40)D 11)C 26)C 41)D 12)D 27)A 42)B 13)D 28)C 43)B 14)B 29)B 44)A 15)C 30)C 45)B