1.4.3 Blood Vessels

• What do arteries carry blood away from?

  The heart
• Arteries have high blood pressure due to their thick, elastic walls.


  True
• The blood pressure in arteries is low compared to veins.

  False
• Arteries regulate blood flow through the contraction and relaxation of their muscular walls.

  True
• Arteries distribute oxygenated blood and nutrients to the body's tissues
• What is the primary function of capillaries?

  Exchange of gases and nutrients
• The primary function of capillaries is to facilitate the exchange of gases and nutrients between the blood and the body's tissues.


  True
• Arrange the blood vessels in order based on blood flow direction in the circulatory system.

  1️⃣ Arteries

  2️⃣ Capillaries

  3️⃣ Veins
• Valves are present in veins to prevent blood backflow
• Arteries carry blood away from the heart
• Arteries have valves to prevent blood backflow.

  False
• Veins have a thick, muscular, and elastic blood vessel wall.

  False
• The lumen of veins is narrower than that of arteries.

  False
• Veins have low blood pressure
• Veins prevent backflow with the presence of valves
• Match the blood vessel characteristic with its description:

  Blood Flow Direction ↔️ Towards the heart for veins ||| Away from the heart for arteries

  Blood Pressure ↔️ Low for veins ||| High for arteries

  Blood Vessel Wall ↔️ Thin, less muscular for veins ||| Thick, muscular, and elastic for arteries
• The lumen of veins is relatively wide
• Blood flow direction in capillaries is away from the heart

  False
• Capillaries have thick, muscular walls

  False
• Match the blood vessel with its blood pressure:

  Arteries ↔️ High

  Veins ↔️ Low

  Capillaries ↔️ Lowest
• Arteries carry blood towards the heart.

  False
• What is the primary function of capillaries?

  Gas and nutrient exchange
• What type of blood vessel wall do arteries have?

  Thick, muscular, and elastic
• What is the lumen (inner diameter) of arteries like?

  Relatively wide
• What do veins carry blood back to?

  The heart
• Capillaries have a thick, muscular wall to withstand high blood pressure.

  False
• The structure of capillaries is characterized by a thin, single-cell layer wall
• Which blood vessel has the lowest blood pressure?

  Capillaries
• What is the primary function of arteries?

  Transport oxygenated blood
• Which blood vessel has the highest blood pressure?

  Arteries
• Arteries distribute oxygenated blood and nutrients to the body's tissues
• Veins carry blood towards the heart
• Valves in veins prevent blood backflow
• The structure of veins consists of thin, less muscular walls compared to arteries
• Blood pressure in veins is high

  False
• Arrange the blood vessels in order from highest to lowest blood pressure:

  1️⃣ Arteries

  2️⃣ Veins

  3️⃣ Capillaries
• Capillaries are the smallest and thinnest blood vessels


  True
• The lumen of capillaries is narrow
• Valves are present in veins
• Unlike arteries and veins, capillaries facilitate the direct diffusion of substances between the blood and surrounding tissues