1.2.2 Water in the Cardiovascular System

• What is another name for the cardiovascular system?

  Circulatory system
• Blood vessels transport blood, carrying dissolved nutrients, oxygen, and waste
• The cardiovascular system transports oxygen, nutrients, hormones, and waste products throughout the body.
• What are the key components of the cardiovascular system?

  Heart, blood vessels, blood, plasma
• Match the component of the cardiovascular system with its role:

  Heart ↔️ Pumps blood

  Blood Vessels ↔️ Transports blood

  Blood ↔️ Carries substances

  Plasma ↔️ Maintains blood volume
• Place the following components of the cardiovascular system in order of their primary role:

  1️⃣ Heart: Pumps blood

  2️⃣ Blood Vessels: Transport blood

  3️⃣ Blood: Carries substances

  4️⃣ Plasma: Maintains blood volume
• What role does water play in blood plasma?

  Acts as a solvent
• Water acts as a solvent in blood plasma, allowing substances like oxygen, nutrients, hormones, and waste products to dissolve and be transported
• Water is essential for transporting oxygen in blood plasma.
• Match the substance transported via blood plasma with its role:

  Oxygen ↔️ Essential for cellular respiration

  Nutrients ↔️ Provides energy

  Hormones ↔️ Regulates bodily functions

  Waste products ↔️ Removed from the body
• What are two crucial factors that water helps maintain in the cardiovascular system?

  Blood volume and pressure
• Arrange the steps in the negative feedback loop that occurs during dehydration:

  1️⃣ Water intake decreases

  2️⃣ Blood volume drops

  3️⃣ Lower blood pressure triggers ADH release

  4️⃣ Kidneys reabsorb water

  5️⃣ Blood volume and pressure increase
• High water intake leads to increased ADH secretion and water reabsorption in the kidneys.

  False
• What are the primary factors that regulate blood pressure?

  Blood volume, heart rate, vessel diameter
• Overhydration leads to decreased ADH secretion and increased urine output
• How does consuming salty foods affect blood volume and pressure?

  Increases both
• Intense exercise can lead to dehydration, lowering blood volume and pressure
• Water acts as the solvent in blood plasma to maintain blood volume.
• What are the three main components of the cardiovascular system?

  Heart, blood vessels, blood
• Match the component of the cardiovascular system with its role:

  Heart ↔️ Pumps blood

  Blood Vessels ↔️ Transport blood

  Blood ↔️ Carries substances

  Plasma ↔️ Maintains blood volume
• Water acts as a solvent in blood plasma
• Oxygen is essential for cellular respiration and is transported by blood plasma.
• What regulates various bodily functions and is transported by water in blood plasma?

  Hormones
• Water's role as a solvent in blood plasma is crucial for maintaining the body's homeostasis
• Steps in the negative feedback loop for dehydration

  1️⃣ Water intake decreases

  2️⃣ Blood volume drops

  3️⃣ Blood pressure lowers

  4️⃣ ADH is released

  5️⃣ Water reabsorption in kidneys

  6️⃣ Blood volume and pressure rise
• Water's high specific heat capacity allows it to absorb heat without significant temperature change.
• How does sweating help regulate body temperature?

  Evaporation cools the skin
• Adequate hydration ensures consistent blood volume and pressure