Grade 8 Science: Cells, Tissues, Organs & Systems
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Questions and Answers

What is a characteristic of all systems?

  • They are made up of individual parts that work independently.
  • They are found only in multicellular organisms.
  • They are connected to only one system.
  • They are made up of individual parts that work together as a whole. (correct)

    • What is an example of a tissue?

  • Heart
  • Kidney
  • Nerve cell
  • Muscle tissue (correct)

    • What is a group of organs that perform activities that help the body as a whole?

  • Organ System (correct)
  • Tissue
  • Cell
  • Organ

    • Which system consists of the mouth, esophagus, stomach, and small intestine?

    <p>Digestive System</p> Signup and view all the answers

    What is the function of the circulatory system?

    <p>To transport blood, nutrients, and wastes</p> Signup and view all the answers

    Which system consists of the brain, spinal cord, and nerves?

    <p>Nervous System</p> Signup and view all the answers

    What is the function of the respiratory system?

    <p>To control breathing and exchange gases</p> Signup and view all the answers

    What is the function of the muscular system?

    <p>To provide movement and support for the body</p> Signup and view all the answers

    Study Notes

    Characteristics of Systems

    • Made up of individual parts that work together as a whole
    • Often connected to one or more systems
    • If one part of a system is missing or damaged, the system will not function well or may not function at all

    Levels of Organization

    • Cells
    • Tissues
    • Organs
    • Organ Systems
    • Organisms

    Tissues

    • Groups of similar cells
    • Found in all multicellular organisms
    • Examples: Muscle tissue, nerve tissue, epithelial tissue, etc.

    Organs

    • Groups of tissues
    • Made up of two or more types of tissues
    • Distinct structures that perform specific functions
    • Examples: Lungs, kidneys, heart, etc.

    Organ Systems

    • A group of organs that perform activities that help the body as a whole
    • Examples:

    Digestive System

    • Consists of: Mouth, Esophagus, Stomach, Small Intestine, Large Intestine, Liver, Gall Bladder, Pancreas
    • Function: To take in and break down food, absorb nutrients, and eliminate solid waste

    Circulatory System

    • Consists of: Heart, Arteries, Veins, Capillaries
    • Function: To transport blood, nutrients, gases, and wastes

    Nervous System

    • Consists of: Brain, Spinal cord, Nerves, Sense organs
    • Function: To detect changes in the environment and to signal these changes to the body which then carries out a response

    Respiratory System

    • Consists of: Nasal cavity, Trachea, Lungs
    • Function: To control breathing, and exchange gases in lungs and tissues

    Excretory System

    • Consists of: Lungs, Kidneys, Urinary bladder
    • Function: To remove liquid and gas wastes from the body

    Muscular System

    • Consists of: Muscle tissue connected to bones throughout the body
    • Function: Not specified in the text

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    Description

    This quiz covers the organization of human body cells into tissues, organs, and systems, including the characteristics of systems and levels of organization.

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