Extracellular Structures

Description

Outside of cell and its parts.
Isabella N
Mind Map by Isabella N, updated more than 1 year ago
Isabella N
Created by Isabella N over 7 years ago
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Resource summary

Extracellular Structures
  1. Cell walls

    Annotations:

    • Plants, fungi, prokaryotes (some protists) only! Keeps it @ happy medium concerning water uptake, Protection:
    1. Cellulose

      Annotations:

      • Makes up cell wall; Dotted with polysaccharides and proteins
      1. Primary Cell Wall

        Annotations:

        • Thin and flexible, 
        1. Middle Lamella

          Annotations:

          • In-between layer, Main wall between cell's cell neighbors.
          1. Secondary Cell Wall

            Annotations:

            • Not all cells have this! Added layer between plasma membrane and primary cell wall
        2. Plasmodesmata

          Annotations:

          • "Streets" for cell's neighborhood of cells
        3. Extracellular Matrix

          Annotations:

          • Animal cells only!
          1. Glycoproteins

            Annotations:

            • Collagen, proteoglycans, and fibronectin.
            1. Function

              Annotations:

              • Support Adhesion Movement Regulation Communication for cells
              1. Intercellular Junctions
                1. Plasmodesmata

                  Annotations:

                  • Tunnels going through hard plant cell walls
                  • Allows for solutes, water, proteins and RNA to get from cell to cell.
                  • Keeps things inside and things outside ; prevents organisms from going "spetic".
                  1. Tight Junctions

                    Annotations:

                    • Cells are touching each other this point! Keeps them from leakaging extracellular "slime" 
                    1. Blood-brain barrier
                      1. Epithelia (intestine)
                      2. Desmosomes

                        Annotations:

                        • Sheet-shaped fasteners that keeps cells together
                        • Aka. anchoring junctions
                        1. Cardiovascular tissue
                        2. Gap Junctions

                          Annotations:

                          • Tunnels for cytoplasm to get to neighboring cells
                          • Aka. communicating junctions
                          • import --> regulates what is going in and out; can open and close; helps to take in + expel waste
                          1. Skeletal muscle
                          2. Function

                            Annotations:

                            • To make physical contact with other cells in tissues, organs or organ systems in communication.
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