Why do we get tired when our body doesn't have enough red blood cells?
Less oxygen, less respiration, less energy
How are blood transported from the different parts of the body back to the heart?
through veins
How many chambers are there in the human heart? Name these chambers.
4 (2 ventricles and 2 atria)
Why are bones important for circulatory system?
Ribs protect the heart and other organs, blood are produced in the bone marrow.
How do human body gets oxygen and remove carbon dioxide from the alveoli?
Diffusion of gasses to blood vessels surrounding the alveoli.
How are blood transported from the heart to the different parts of the body?
through arteries
What are "deoxygenated blood"?
blood with lesser oxygen composition.
Explain how white blood cells fight pathogens (harmful microorganisms)?
phagocytosis
How is pulmonary artery different from any other arteries in the body?
pulmonary artery carries deoxygenated blood from heart to the lungs.
Explain "double circulation" in human circulatory system.
Systemic and Pulmonary blood circulation
Which component of blood helps carry WASTE materials like carbon dioxide and urea?
Blood PLASMA
What is "oxygenated blood"?
oxygen-rich blood
What bridge veins and arteries? How is this structure helpful?
Capillaries, connects two blood vessels top complete the circulation of blood
How is pulmonary vein different from other veins in the body?
pulmonary veins carry oxygenated blood from lungs back to the heart.