Cell Mindmap Part 2 By Yessenia

1. Intercellular Junctions

1.1. Direct physical contact

1.1.1. Plasmodesmata

1.1.1.1. Plants

1.1.1.1.1. Plant cells in connection to channels allows molecules to pass

1.1.2. Tight Junctions

1.1.2.1. Membranes of adjacent cells fuse

1.1.2.1.1. Prevent leakage of extracellular fluid within cells

1.1.3. Desmosomes

1.1.3.1. Hold membranes together

1.1.3.1.1. Fasten cells together into rivets

1.1.4. Gap Junctions

1.1.4.1. Communication

1.1.4.1.1. Provide cytoplasmic channels between adjacent cells

2. Cytoskeleton

2.1. Internal framework with dynamic system, composed of fibers

2.2. Provide mechanical support & aids in maintaining eukaryotic cell shape

2.3. Has anchorage points for organlles/enzymes

2.4. Allows cell shape to change

2.5. Cell motility

2.6. 3 main types of fibers:

2.6.1. Microfilaments (thinnest components that resist tension, aid in support, movement)

2.6.2. Intermediate filaments (middle range diameter components that reinforce cell shape & fix organelle location)

2.6.3. Microtubules (thickest components that maintain cell shape, movement of chromosomes)

3. Extracellular Matrix

3.1. Mixture of glycoproteins, collagen & integrins

3.2. Form protective layer

3.3. Support for animal cells

3.4. Influence how cells form & divide

3.5. Regulation of cell behavior