Human Body Systems and Functions

What is the process by which a substance absorbed in one part of an organism's body is moved to other parts?

• Respiration

• Digestion

• Transportation

• Excretion

Which of the following are the main components of the Blood Vascular System in humans?

• Lymph, Lymphatic vessels, Lymph nodes

• Blood, Blood vessels, Heart

• Red blood cells, White blood cells, Platelets

• Arteries, Veins, Capillaries

What is the primary function of hemoglobin, a protein found in red blood cells?

• To fight against harmful germs and viruses.

• To help in blood clotting.

• To transport oxygen from the lungs to various body parts.

• To carry metabolic waste products.

What is the main role of white blood cells (WBCs) in the human body?

• Transporting nutrients and hormones.

• Forming blood clots to prevent bleeding.

• Carrying oxygen to cells.

• Protecting the body against harmful germs, viruses, and bacteria.

Which type of blood cell has a life span of approximately 120 days?

• White Blood Cells (WBC)

• Platelets

• Red Blood Cells (RBC)

• Lymphocytes

Which of the following is NOT a primary function of blood?

• Transporting oxygen and nutrients.

• Forming blood clots to prevent excess blood loss.

• Producing hormones for growth and development.

• Carrying cells and antibodies to fight infection.

What is a key difference between arteries and veins regarding blood flow?

• Arteries carry deoxygenated blood, while veins carry oxygenated blood.

• Blood flows through arteries under low pressure, but through veins under high pressure.

• Arteries transport blood from the heart to body parts, while veins return blood from body parts to the heart.

• Arteries have thin walls, whereas veins have thick walls.

What is a primary function of lymph in the human body?

• Transporting oxygen to tissues.

• Filtering out harmful substances and waste.

• Regulating body temperature.

• Producing red blood cells.

What type of organ is the heart, and approximately how large is it?

• Glandular organ, size of a tennis ball.

• Muscular organ, size of a fist.

• Skeletal organ, size of a football.

• Connective tissue organ, size of a human head.

Which side of the human heart typically contains oxygenated blood?

• The right side.

• The left side.

• Both sides equally.

• Neither side, as blood is always mixed.