التقويم - كتاب أنظمة جسم الإنسان - الصف 12 - الفصل 1 - المملكة العربية السعودية

--- SECTION: التقويم --- 2-10 --- SECTION: 1 --- في الجدول أدناه أكمل المطلوب في أوجه المقارنة مستعيناً بالشكل وما سبق دراسته في الجهاز الدوري: 319 وزارة التعليم Ministry of Education 2025 - 1447 --- VISUAL CONTEXT --- **DIAGRAM**: الجهاز الدوري وتبادل الغازات Description: A biological diagram illustrating the human circulatory system and the process of gas exchange in the lungs and body tissues. It shows the heart as a central pump, with blood vessels (pulmonary artery and vein) connecting to the lungs (alveoli) and then to the body tissues (tissue cells). Red arrows indicate oxygenated blood/gas (O₂) and blue arrows indicate deoxygenated blood/gas (CO₂). X-axis: N/A Y-axis: N/A Data: The diagram illustrates the path of blood circulation and the exchange of gases. Deoxygenated blood (blue) flows from the heart via the pulmonary artery to the lungs. In the pulmonary alveoli, external gas exchange occurs: O₂ enters the blood, and CO₂ leaves the blood. Oxygenated blood (red) then returns to the heart via the pulmonary vein. From the heart, oxygenated blood is pumped to tissue cells throughout the body. In the tissue cells, internal gas exchange occurs: O₂ leaves the blood and enters the cells, while CO₂ leaves the cells and enters the blood. Deoxygenated blood then returns to the heart to complete the cycle. Context: This diagram is essential for understanding the physiological processes of respiration and circulation, specifically how gases like oxygen and carbon dioxide are transported and exchanged in the human body. It supports the comparison questions in the table regarding gas concentrations before and after exchange in different parts of the circulatory and respiratory systems.