WK 3: Tissues and Organs II
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Questions and Answers

What is the primary function of epithelial tissue in the body?

  • To provide mechanical support to organs
  • To produce hormones and regulate body functions
  • To interface with the environment and facilitate selective transport of molecules (correct)
  • To transmit nerve impulses
  • What is the main characteristic of connective tissue?

  • It is composed of closely packed cells
  • It has a high degree of regenerative capacity (correct)
  • It is highly specialized for a specific function
  • It provides a barrier between two compartments
  • What is the primary function of muscle tissue?

  • To produce hormones and regulate body functions
  • To interface with the environment
  • To provide mechanical support and movement (correct)
  • To facilitate sensory transduction
  • What is the role of glial cells in the nervous system?

    <p>To facilitate the exchange of nutrients and waste products</p> Signup and view all the answers

    What is the basic structure of a neuron?

    <p>A single cell with a specific function</p> Signup and view all the answers

    What are the three types of muscle tissue?

    <p>Skeletal, smooth, and cardiac</p> Signup and view all the answers

    What is the primary function of the nervous tissue in the human body?

    <p>To control muscle, viscera, and glands, and provide sensory input</p> Signup and view all the answers

    What is the function of osteoclasts in the human body?

    <p>To resorb bone</p> Signup and view all the answers

    Which type of muscle tissue is found in the walls of large blood vessels?

    <p>Smooth muscle tissue</p> Signup and view all the answers

    What is the role of glial cells in the nervous system?

    <p>To support, protect, and provide a framework for neurons</p> Signup and view all the answers

    What is the main function of erythrocytes in the human body?

    <p>To transport oxygen and carbon dioxide</p> Signup and view all the answers

    What is the term for the process by which a glial cell wraps around an axon and lays down myelin in the glial cell membrane?

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

    What type of connective tissue is composed of blood?

    <p>Fluid connective tissue</p> Signup and view all the answers

    What is the main difference between the central nervous system (CNS) and the peripheral nervous system (PNS)?

    <p>The CNS includes the brain and spinal cord, while the PNS includes peripheral motor neurons and sensory neurons</p> Signup and view all the answers

    What is the function of skeletal muscle?

    <p>To produce movement or exert forces</p> Signup and view all the answers

    How many types of tissue are there?

    <p>4</p> Signup and view all the answers

    What is the term for the groups of similar cells and extracellular products that carry out a common function?

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

    What is the name of the type of cartilage that is flexible?

    <p>Elastic cartilage</p> Signup and view all the answers

    What is the function of tight junctions in epithelial cells?

    <p>To occlude the passage of most substances, even small molecules</p> Signup and view all the answers

    What is the characteristic of epithelial cells in terms of regeneration?

    <p>They have a limited lifespan and must be constantly replaced</p> Signup and view all the answers

    What is the primary function of desmosomes in tissues?

    <p>To provide mechanical strength to tissues</p> Signup and view all the answers

    What is the main characteristic of connective tissue?

    <p>It is the most diverse and widely distributed tissue type</p> Signup and view all the answers

    What is the purpose of the basement membrane in epithelial tissue?

    <p>To attach the epithelial layer to the underlying tissue</p> Signup and view all the answers

    What is the function of adherens junctions in cells?

    <p>To form an adhesion 'belt' and stop cells from sliding</p> Signup and view all the answers

    What is the characteristic of the apical surface of an epithelial cell?

    <p>It is the surface of the cell that is free or facing the lumen</p> Signup and view all the answers

    What is the primary function of gap junctions in cells?

    <p>To facilitate cell-cell communication</p> Signup and view all the answers

    What is the function of desmosomes in epithelial cells?

    <p>To attach adjacent cells together</p> Signup and view all the answers

    What is the characteristic of stratified squamous epithelia?

    <p>It consists of multiple layers of cells, with the cells at the surface being shed</p> Signup and view all the answers

    What is the name of the protein involved in adherens junctions?

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

    How many main types of tissue are there?

    <p>4</p> Signup and view all the answers

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