Fluid Exchange Between Extracellular Space and Blood

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Questions and Answers

Why do doctors advise drinking plenty of fluids during certain infections?

  • To improve the immune system response
  • To decrease the temperature of the body
  • To reduce friction and damage from movement or trauma (correct)
  • To increase the chances of recovery

How does water protect bones that articulate from scraping against each other?

  • By reducing friction with synovial fluid (correct)
  • By directly strengthening the bones
  • By increasing body temperature
  • By absorbing impacts

What is the purpose of mucus lining the body tissues like the digestive tract?

  • To regulate blood glucose levels
  • To insulate the tissues
  • To dilate blood vessels
  • To prevent injuries and damage (correct)

How does cerebrospinal fluid protect the brain?

<p>By acting as a shock absorber (B)</p> Signup and view all the answers

What happens when sweat evaporates from our skin during sweating?

<p>It cools down the skin and the body (B)</p> Signup and view all the answers

Why must the human body's temperature be maintained at around 37°C?

<p>To ensure proper body functioning (A)</p> Signup and view all the answers

What is the primary reason for water movement from the extracellular space to the blood?

<p>Osmosis driven by concentration differences (D)</p> Signup and view all the answers

What is the role of protein in maintaining fluid balance?

<p>To attract water into the blood from the extracellular space (B)</p> Signup and view all the answers

What is the primary function of water within cells?

<p>To give cells a three-dimensional shape (D)</p> Signup and view all the answers

What is the term for the fluid found in sacs between joints?

<p>Synovial fluid (C)</p> Signup and view all the answers

What is the primary reason for water's ability to dissolve polar substances?

<p>Its polar nature (C)</p> Signup and view all the answers

What is the term for the fluid found within the eye that helps maintain its structure?

<p>Humour (C)</p> Signup and view all the answers

What is the primary reason why water is considered the most important biological solvent?

<p>It helps move substances around the body via blood vessels or the digestive tract (C)</p> Signup and view all the answers

What is the role of water within cells?

<p>It allows certain materials to move around the cell and brings reactants together (D)</p> Signup and view all the answers

What is the process of splitting larger molecules into smaller ones with the addition of water called?

<p>Hydrolysis (B)</p> Signup and view all the answers

What is the main function of water in the lymph?

<p>To move infectious agents to immune cells for removal (A)</p> Signup and view all the answers

What can be an outcome when compatible reactants are dissolved in water?

<p>Increased chance of chemical reaction (C)</p> Signup and view all the answers

What is the approximate composition of mucus?

<p>Mostly water (A)</p> Signup and view all the answers

What is the primary component of cytoplasm, a gel-like substance found within cells?

<p>Water (A)</p> Signup and view all the answers

Which of the following statements best describes the extracellular water content in the human body?

<p>It is constantly being used for the body's needs and must be regularly replenished (B)</p> Signup and view all the answers

What property of water allows it to form bonds with other polar molecules?

<p>Polarity (A)</p> Signup and view all the answers

Why do lipids separate themselves from water when the two are combined?

<p>Lipids are nonpolar and not attracted to water (D)</p> Signup and view all the answers

What percentage of the human body is made up of water by weight?

<p>60-70% (C)</p> Signup and view all the answers

Which of the following is not a place where extracellular water is found in the human body?

<p>Cytoplasm (D)</p> Signup and view all the answers

What is the primary function of water in relation to the body's structure?

<p>Water acts as a structural component of cells and tissues (D)</p> Signup and view all the answers

What is the primary reason why we need to consume water continuously?

<p>Because we do not store water and continuously lose it (C)</p> Signup and view all the answers

What characteristic of a water molecule allows it to be attracted to other water molecules?

<p>Its polar nature (B)</p> Signup and view all the answers

Which statement best describes the solvent role of water in the body?

<p>All of the above (D)</p> Signup and view all the answers

What happens when there is a reduction in the water content of the blood and tissues?

<p>Our thirst increases to compensate for the reduction (B)</p> Signup and view all the answers

What is the main reason water plays a crucial role in cellular structure?

<p>All of the above (D)</p> Signup and view all the answers

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Study Notes

  • Water is essential for the human body and is required for its structure and various physiological activities.
  • The human body is made up of 60-70% water, with two-thirds of this water found inside cells (intracellular) and the remaining in the extracellular space.
  • Water plays a crucial role in protecting the body from injuries and maintaining the proper functioning of organs and systems.
  • Water helps regulate body temperature and sweating is one of the ways water helps in temperature regulation.
  • Water is an important solvent in biological processes and can dissolve a variety of polar substances, allowing for the transportation of nutrients, oxygen, and waste products in the body.
  • Water facilitates chemical reactions, such as hydrolysis, which breaks down larger molecules into smaller ones.
  • Water is involved in immune responses, as it is present in the lymph and mucus, helping to remove infectious agents from the body.
  • Water molecules are polar, which allows them to form bonds with other polar molecules, making it a versatile and important compound in biological systems.

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