1.2 Circulatory System

• What does blood carry to cells in the body?

  Oxygen and nutrients
• Which type of blood vessel carries blood away from the heart?

  Arteries
• What is the function of the heart in the circulatory system?

  Pumps blood
• Which blood vessel carries deoxygenated blood towards the heart?

  Veins
• The heart pumps blood around the body
• Match the type of blood vessel with its function:

  Arteries ↔️ Carry blood away from the heart

  Veins ↔️ Carry blood towards the heart

  Capillaries ↔️ Exchange substances with tissues
• Capillaries facilitate the exchange of substances between blood and body tissues.


  True
• The heart propels blood through blood vessels.


  True
• Arteries carry blood away from the heart to deliver oxygen and nutrients
• What is the primary function of capillaries?

  Substance exchange
• What is the central organ of the circulatory system?

  Heart
• What are the three main components of the circulatory system?

  Heart, blood vessels, blood
• White blood cells defend against infection in the circulatory system.

  True
• The heart is divided into four chambers.


  True
• What component of blood transports oxygen?

  Red blood cells
• In systemic circulation, blood flows from the left ventricle to the body tissues.
• The circulatory system has two main pathways for blood circulation: pulmonary and systemic.


  True
• Oxygenated blood returns to the left atrium
• Deoxygenated blood returns to the right atrium of the heart.


  True
• Avoiding tobacco and excessive alcohol is crucial for circulatory system health
• Arteries have thick, muscular walls to withstand high blood pressure.


  True
• The left ventricle pumps oxygenated blood throughout the body
• Arteries carry blood away from the heart to deliver oxygen and nutrients.


  True
• What is the primary function of the circulatory system?

  Exchange of substances
• What ensures the efficient circulation of essential substances throughout the body?

  Blood vessels and heart
• What role do valves play in the heart?

  Ensure one-way blood flow
• White blood cells defend the body against infection.


  True
• Steps in the pulmonary circulation pathway:

  1️⃣ Blood flows from the right ventricle to the lungs

  2️⃣ Blood picks up oxygen and releases carbon dioxide

  3️⃣ Oxygenated blood returns to the left atrium
• A healthy circulatory system is essential for overall well-being.


  True
• Regular physical activity improves cardiovascular fitness
• What is the primary function of the circulatory system?

  Transport substances
• The heart is the central pumping organ of the circulatory system.


  True
• Veins carry blood towards the heart
• Blood contains cells and plasma
• Order the functions of the circulatory system:

  1️⃣ Transport oxygen to cells

  2️⃣ Transport nutrients to cells

  3️⃣ Transport hormones to regulate processes

  4️⃣ Transport waste products away from cells
• Match the blood vessel with its characteristic:

  Arteries ↔️ Thick, muscular walls

  Veins ↔️ Thinner walls with valves

  Capillaries ↔️ Dense network for exchange
• Veins carry blood towards the heart.


  True
• Veins have valves to prevent backflow of blood.


  True
• Veins have thicker walls than arteries.

  False
• Arrange the blood vessels in order of blood flow away from the heart

  1️⃣ Arteries

  2️⃣ Capillaries

  3️⃣ Veins