Very Short Question and Answers - Transportation in Human Beings

Blood transports food, oxygen, and waste materials in our bodies.

Blood consists of a fluid medium called plasma, red blood corpuscles, white blood cells, and platelets.

Plasma transports food, carbon dioxide, and nitrogenous wastes in dissolved form.

The heart is about the size of a human fist.

The heart has different chambers that prevent the oxygen-rich blood from mixing with carbon dioxide-rich blood.

The two upper chambers are called the left atrium and right atrium.

The left ventricle pumps oxygenated blood to the rest of the body.

Valves ensure that blood does not flow backward when the atria or ventricles contract.

Double circulation refers to the blood going through the heart twice during each cycle in mammals and birds.

Blood pressure is the force that blood exerts against the wall of a vessel.

Blood pressure is measured with a sphygmomanometer.

Arteries are vessels that carry blood away from the heart to various organs of the body.

Veins collect blood from organs and bring it back to the heart; they do not need thick walls and have valves to ensure one-way flow.

Capillaries are the smallest blood vessels where exchange of materials between blood and surrounding cells takes place.

Platelets help to clot the blood and plug any leaks in the blood vessels.

Lymph is a fluid similar to plasma, but colorless and containing less protein, involved in transportation within the body.

Lymph drains into lymphatic capillaries and larger lymph vessels, which finally open into larger veins.

The normal range of hemoglobin content varies but is generally around 12 to 16 grams per deciliter for women and 14 to 18 grams per deciliter for men.

Yes, similar to humans, male animals generally have higher hemoglobin levels than female animals.

When arterioles constrict, it increases resistance to blood flow, leading to higher blood pressure.