Heart and Blood Vessels
What is the main organ that pumps blood throughout the body?
Heart ✅
What muscle helps in breathing by contracting and relaxing?
Diaphragm ✅
Which type of blood vessel carries oxygenated blood away from the heart?
Arteries ✅
What gas do we inhale that is needed for cellular respiration?
Oxygen ✅
What disease is caused by blocked arteries leading to the heart?
Heart Attack ✅
What are the small blood vessels that connect arteries and veins?
Capillaries ✅
What tube carries air from the nose and mouth to the lungs?
Trachea ✅
What is the liquid part of blood that transports nutrients and waste?
Plasma ✅
Where does gas exchange occur in the lungs?
Alveoli ✅
What condition causes difficulty in breathing due to narrowed airways?
Asthma ✅
What valve prevents backflow of blood into the left atrium?
Mitral Valve ✅
What is the primary function of the alveoli?
Gas exchange ✅
What protein in red blood cells binds to oxygen?
Hemoglobin ✅
What gas do we exhale as a waste product?
Carbon Dioxide ✅
What is a chronic lung disease often caused by smoking?
Emphysema ✅
Which part of the heart receives oxygen-rich blood from the lungs?
Left Atrium ✅
What substance in the lungs helps prevent alveoli from collapsing?
Surfactant ✅
What chamber of the heart pumps oxygen-rich blood to the body?
Left Ventricle ✅
What happens when oxygen binds to hemoglobin?
It becomes oxyhemoglobin ✅
What disorder results in the inability of blood to clot properly?
Hemophilia ✅
What is the largest artery in the body?
Aorta ✅
What part of the brain controls breathing rate?
Medulla Oblongata ✅
Which vein carries oxygenated blood from the lungs to the heart?
Pulmonary Vein ✅
What structure prevents food from entering the trachea?
Epiglottis ✅
What genetic disorder affects hemoglobin and causes misshapen red blood cells?
Sickle Cell Disease ✅