Which tiny blood vessels allow the exchange of oxygen nutrients and waste between blood and body tissues?

Which blood vessels carry deoxygenated blood back to the heart from body tissues?

Which chamber of the heart receives deoxygenated blood from the body before sending it to the lungs?

Which blood vessels carry oxygenated blood away from the heart to the rest of the body?

Which chamber of the heart pumps oxygenated blood out to the rest of the body?

Which structure in the heart prevents the backward flow of blood between chambers?

Which flexible connective tissue cushions joints and is found in structures like the ear and nose?

Which muscle separates the chest cavity from the abdominal cavity and assists in breathing?

Which soft tissue found inside bones is responsible for producing new blood cells?

Which flap of tissue prevents food from entering the trachea during swallowing?

Which gas exchange membrane structure in the lungs maximizes surface area for efficient breathing?