Circulatory System — Fiche d'exercices de Anatomy & Physiology

Corrigé

1. 1.
   The left atrium receives oxygenated blood from the lungs via the pulmonary veins.

   Réponse finale : c) Left atrium
2. 2.
   Réponse finale : The pulmonary arteries carry deoxygenated blood from the right ventricle to the lungs for gas exchange (oxygenation).
3. 3.
   Réponse finale : 1. Superior vena cava, 2. Right atrium, 3. Pulmonary artery, 4. Aorta, 5. Pulmonary vein, 6. Mitral valve, 7. Aortic valve, 8. Left ventricle
4. 4.
   Capillaries are one cell thick to allow diffusion of gases and nutrients.

   Réponse finale : c) Capillaries

1. 5.
   Réponse finale : Superior vena cava $\rightarrow$ right atrium $\rightarrow$ tricuspid valve $\rightarrow$ right ventricle $\rightarrow$ pulmonary valve $\rightarrow$ pulmonary artery $\rightarrow$ lungs $\rightarrow$ pulmonary vein $\rightarrow$ left atrium $\rightarrow$ mitral valve $\rightarrow$ left ventricle $\rightarrow$ aortic valve $\rightarrow$ aorta.
2. 6.
   Red blood cells contain hemoglobin, which binds oxygen in the lungs and releases it to tissues.

   Réponse finale : b) Carrying oxygen
3. 7.
   Réponse finale : Systole is the contraction phase of the cardiac cycle, when the heart pumps blood out. Diastole is the relaxation phase, when the heart fills with blood.
4. 8.
   Réponse finale : a) Right atrium $\rightarrow$ right ventricle $\rightarrow$ lungs $\rightarrow$ left atrium $\rightarrow$ left ventricle $\rightarrow$ body
5. 9.
   Réponse finale : The SA node is the natural pacemaker of the heart. It generates electrical impulses that initiate each heartbeat and set the heart rate.

1. 10.
   Réponse finale : Aorta: Artery, Oxygenated; Pulmonary artery: Artery, Deoxygenated; Pulmonary vein: Vein, Oxygenated; Superior vena cava: Vein, Deoxygenated