30 Questions
Why do doctors advise drinking plenty of fluids during certain infections?
To reduce friction and damage from movement or trauma
How does water protect bones that articulate from scraping against each other?
By reducing friction with synovial fluid
What is the purpose of mucus lining the body tissues like the digestive tract?
To prevent injuries and damage
How does cerebrospinal fluid protect the brain?
By acting as a shock absorber
What happens when sweat evaporates from our skin during sweating?
It cools down the skin and the body
Why must the human body's temperature be maintained at around 37°C?
To ensure proper body functioning
What is the primary reason for water movement from the extracellular space to the blood?
Osmosis driven by concentration differences
What is the role of protein in maintaining fluid balance?
To attract water into the blood from the extracellular space
What is the primary function of water within cells?
To give cells a three-dimensional shape
What is the term for the fluid found in sacs between joints?
Synovial fluid
What is the primary reason for water's ability to dissolve polar substances?
Its polar nature
What is the term for the fluid found within the eye that helps maintain its structure?
Humour
What is the primary reason why water is considered the most important biological solvent?
It helps move substances around the body via blood vessels or the digestive tract
What is the role of water within cells?
It allows certain materials to move around the cell and brings reactants together
What is the process of splitting larger molecules into smaller ones with the addition of water called?
Hydrolysis
What is the main function of water in the lymph?
To move infectious agents to immune cells for removal
What can be an outcome when compatible reactants are dissolved in water?
Increased chance of chemical reaction
What is the approximate composition of mucus?
Mostly water
What is the primary component of cytoplasm, a gel-like substance found within cells?
Water
Which of the following statements best describes the extracellular water content in the human body?
It is constantly being used for the body's needs and must be regularly replenished
What property of water allows it to form bonds with other polar molecules?
Polarity
Why do lipids separate themselves from water when the two are combined?
Lipids are nonpolar and not attracted to water
What percentage of the human body is made up of water by weight?
60-70%
Which of the following is not a place where extracellular water is found in the human body?
Cytoplasm
What is the primary function of water in relation to the body's structure?
Water acts as a structural component of cells and tissues
What is the primary reason why we need to consume water continuously?
Because we do not store water and continuously lose it
What characteristic of a water molecule allows it to be attracted to other water molecules?
Its polar nature
Which statement best describes the solvent role of water in the body?
All of the above
What happens when there is a reduction in the water content of the blood and tissues?
Our thirst increases to compensate for the reduction
What is the main reason water plays a crucial role in cellular structure?
All of the above
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.
Learn about the exchange of water between the extracellular space and blood, factors regulating this exchange, and the role of osmosis in balancing concentration differences. Explore how charged and polar substances in the blood attract water from the extracellular space.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
