To help in digestion.
To transport blood, nutrients, oxygen, carbon dioxide, and hormones throughout the body.
To produce red blood cells.
To protect the body against diseases.
Lungs, diaphragm, and trachea.
Heart, blood vessels, and blood.
Nervous system, digestive system, and respiratory system.
Kidney, liver, and pancreas.
The heart pumps blood throughout the body, delivering oxygen and nutrients while removing waste products.
The heart filters blood.
The heart stores blood.
The heart increases blood pressure.
Transversal and marginal circulation.
Systemic circulation and pulmonary circulation.
Direct and indirect circulation.
Endocrine and exocrine circulation.
Arteries carry oxygen-rich blood away from the heart, while veins carry oxygen-poor blood back to the heart.
Arteries carry oxygen-poor blood, while veins carry oxygen-rich blood.
Both carry oxygen-rich blood towards the heart.
Both carry oxygen-poor blood away from the heart.
Capillaries allow for the exchange of oxygen, carbon dioxide, and nutrients between blood and tissues.
Capillaries store blood.
Capillaries provide structural support.
Capillaries produce hormones.
Red blood cells produce antibodies to fight infections.
Red blood cells are involved in clotting.
Red blood cells transport oxygen from the lungs to the body and carbon dioxide from the body to the lungs.
Red blood cells filter toxins from blood.
Left ventricle.
Right atrium.
Right ventricle.
Left atrium.
Left ventricle.
Right atrium.
Right ventricle.
Left atrium.
Heart valves prevent the backflow of blood, ensuring it flows in the correct direction.
Heart valves regulate heartbeat speed.
Heart valves filter out impurities in the blood.
Heart valves produce white blood cells.
The circulatory system helps regulate body temperature by adjusting blood flow to the skin.
By producing sweat.
By dilating and contracting the airways.
By increasing and decreasing hormone production.
The aorta regulates heartbeat speed.
The aorta carries waste products to the kidneys.
The aorta is the largest artery and carries oxygen-rich blood from the left ventricle to the rest of the body.
The aorta stores blood nutrients.
The pumping action of the atria and ventricles.
The 'lub-dub' sound is caused by the closing of the heart valves.
The movement of blood through arteries and veins.
Contracting and relaxing of heart muscles.
Two chambers.
The human heart has four chambers: two atria and two ventricles.
Six chambers.
Five chambers.
Coronary circulation refers to the movement of blood through the vessels supplying the heart itself.
It refers to blood circulation in the lungs.
It is the circulation of blood in the kidneys.
It involves the transport of nutrients in the digestive system.