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Body Fluid Distribution and Composition
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Body Fluid Distribution and Composition

Created by
@StellarLight4725

Questions and Answers

What cannot pass through the pores in the blood capillaries?

  • Nutrients
  • Water
  • Protein (correct)
  • Oxygen

    • Waste products from cells enter the blood plasma before passing into the interstitial fluid.

    False

    What is the primary medium for intercellular communication?

    Tissue fluid

    Tissue fluid composition varies depending on exchanges between cells and the _____.

    <p>blood</p> Signup and view all the answers

    Match the following substances with their corresponding roles:

    <p>Oxygen = Component transported in blood Nutrients = Essential for cell function Waste products = Byproducts of metabolism Hormones = Signaling molecules released by cells</p> Signup and view all the answers

    How do materials exchange across capillaries?

    <p>By diffusion</p> Signup and view all the answers

    The interstitial fluid has the same composition in all areas of the body.

    <p>False</p> Signup and view all the answers

    What substances must pass into the interstitial fluid before reaching cells?

    <p>Oxygen and nutrients</p> Signup and view all the answers

    What percentage of body weight does water approximately represent in a young adult male?

    <p>60%</p> Signup and view all the answers

    Fat tissues contain more water than muscle tissues.

    <p>False</p> Signup and view all the answers

    What is one primary function of water in the body?

    <p>Regulate body temperature</p> Signup and view all the answers

    An average full-term neonate can have as much as _____ of their body weight in water.

    <p>70-80%</p> Signup and view all the answers

    Match the following groups with their respective water percentage of body weight:

    <p>Young adult male = 60% Young adult female = 55% Children = 70-80% Older adults = Lower concentration than young adults</p> Signup and view all the answers

    Which statement is true about the water content in males compared to females of the same weight?

    <p>Males contain more water than females.</p> Signup and view all the answers

    Males and females contain the same amount of water regardless of their weight.

    <p>False</p> Signup and view all the answers

    What is the primary difference in water content between males and females of the same weight?

    <p>Males contain more water than females.</p> Signup and view all the answers

    The male body contains ______ water than the female body of the same weight.

    <p>more</p> Signup and view all the answers

    Match the following characteristics with their corresponding gender:

    <p>Higher water content = Male Lower water content = Female Generally more muscle mass = Male Generally more body fat = Female</p> Signup and view all the answers

    What is the main intravascular fluid in humans?

    <p>Blood</p> Signup and view all the answers

    The plasma membrane separates interstitial fluid from plasma.

    <p>False</p> Signup and view all the answers

    What is the average volume of blood in humans per kilogram?

    <p>75 ml</p> Signup and view all the answers

    The fluid portion of the blood is known as _____ .

    <p>blood plasma</p> Signup and view all the answers

    Match the following anatomical spaces with their descriptions:

    <p>Peritoneal cavity = Example of third space Pleural cavity = Lubrication in healthy lungs Interstitial fluid = Fluid between cells Blood plasma = Main fluid of blood</p> Signup and view all the answers

    Which of the following correctly describes the function of blood plasma?

    <p>Transports nutrients and gases</p> Signup and view all the answers

    The third space in the body typically collects large amounts of fluid.

    <p>False</p> Signup and view all the answers

    The _____ wall separates interstitial fluid from plasma.

    <p>blood vessel</p> Signup and view all the answers

    What percentage of total body water is comprised by intracellular fluid (ICF)?

    <p>40%</p> Signup and view all the answers

    Which of the following is NOT an inorganic substance found in body fluids?

    <p>Glucose</p> Signup and view all the answers

    Extracellular fluid is present inside the cells.

    <p>False</p> Signup and view all the answers

    What are the two compartments body fluid is divided into?

    <p>Intracellular fluid (ICF) and Extracellular fluid</p> Signup and view all the answers

    The extracellular fluid includes the _____ fluid that is present between the cells.

    <p>interstitial</p> Signup and view all the answers

    Match the following substances with their category:

    <p>Glucose = Organic substance Sodium = Inorganic substance Calcium = Inorganic substance Hormones = Organic substance</p> Signup and view all the answers

    Which of the following is a component of the intracellular fluid?

    <p>Fatty acids</p> Signup and view all the answers

    Potassium is classified as an organic substance found in body fluids.

    <p>False</p> Signup and view all the answers

    Name one example of an enzyme found in body fluids.

    <p>Any enzyme (e.g., amylase, lipase)</p> Signup and view all the answers

    _____ is a type of extracellular fluid that exists between cells.

    <p>Interstitial fluid</p> Signup and view all the answers

    Study Notes

    Body Fluid Distribution

    • Total body fluid constitutes approximately 70% of body weight.
    • Young adult males have about 60% of their body weight as fluid; young adult females have around 55%.
    • Obese individuals have lower water percentage due to higher fat content.
    • Older adults experience a decrease in body water percentage due to loss of muscle mass.
    • Full-term neonates can have body water content as high as 70-80%.

    Fluid Compartments

    • Intracellular Fluid (ICF): Represents 40% of total body water located inside cells.
    • Extracellular Fluid (ECF): Makes up 20% of total body water, situated outside of cells.

    Composition of Body Fluids

    • Body fluids consist of organic substances (e.g., glucose, amino acids, hormones) and inorganic substances (e.g., sodium, potassium, calcium).
    • Balance of these substances is crucial for various physiological functions.

    Interstitial Fluid Dynamics

    • Plasma and interstitial fluid exchange through pores in blood capillaries, allowing diffusion of water and most solutes, except proteins.
    • Oxygen and nutrients must pass into interstitial fluid before entering cells, while waste products and hormones travel from cells to blood via interstitial fluid.

    Tissue Fluid Variation

    • Tissue fluid composition varies across different tissues and body regions, reflecting exchanges between cells and blood, crucial for intercellular communication.

    Intravascular Compartment

    • Blood is the primary intravascular fluid, with an average volume of approximately 75ml/kg in humans.
    • Blood plasma transports oxygen, carbon dioxide, and nutrients vital for cellular functions and metabolism.

    Third Space Concept

    • The "third space" refers to body areas like the peritoneal and pleural cavities where fluid collects in smaller amounts, providing lubrication.
    • Water is essential for organ functioning, with survival without it limited to days or weeks.

    Functions of Water

    • Vital for cellular life, participating in chemical reactions and metabolic processes.
    • Aids in nutrient absorption and transport, regulates body temperature, and eliminates waste via urine.

    Barriers Between Body Fluids

    • Plasma membranes separate intracellular fluid from interstitial fluid.
    • Blood vessel walls distinguish interstitial fluid from plasma, influencing fluid exchange and overall homeostasis.

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    Related Documents

    physiology_fluid_lecture_one__pdf_638620988849941408 copy copy.pdf

    Description

    This quiz covers key concepts related to body fluid distribution, including the percentages of body water in different demographics such as young adults and neonates. It also delves into the two main fluid compartments, intracellular and extracellular fluids, and discusses the composition of body fluids, highlighting the importance of maintaining balance among various substances for physiological health.

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