human tissues

human tissues

1. epithelial

   • types
     • squamous
       • attached to the basal membrane of epithelial tissue, helps with diffusion and fission
     • cuboid
       • absorption on the filtration process, found in secretory ducts of small glands
     • columnar
       • mostly for protection, fights bacteria in the stomach, also found in the stomach, clearly, along with both your intestines and colon.
     • Pseudostratified
       • its the upper respiratory tract found mostly near the lungs to protect from irritants
   • general characteristics
     • Covers and lines body surfaces. Cells are densely packed together with a minimal amount of intercellular substance. Cells are firmly attached by intercellular junctions. Cells rest on a basement membrane partly derived from underlying connective tissue.

2. nervous

   • neurons/neurology
     • controls the body's movements, sends and carries signals to and from the different parts of the body

3. muscle

   • smooth
     • it applies pressure to our internal organs to help them work
   • cardiac
     • its the main tissue to surround the heart that helps the heart function
   • skeletal
     • its attached to your bones and you voluntarily move it to function.

4. connective

   • blood
     • carrier of plasma, aka the matrix aka white and red blood cells
       • found everywhere through the body
   • bone
     • stores minerals, internal support, movement help and protects organs
       • through the body
   • loose
     • areolar
       • mostly connects organs and such together holding them in place.
         • surrounds blood cells, nerves, organs, and muscles
     • adipose
       • stores energy in fat but can also be used to cushion and insulate the body
         • found in internal organs and below the skin
     • reticular
       • forms a scaffolding for other cells in several organs, such as lymph nodes and bone marrow
         • usually attached to fiberblast
   • dense
     • regular
       • aligned densly packed fibroblast cells
         • attached to ligaments and tendons
     • irregular
       • makes the skin resistant to tearing
         • mostly found in the deep layer of the dermis
     • elastic
       • helps the body move, allows movement and easy return to idle state
         • found relatively everywhere, around organs and ligaments.
   • cartilage
     • hyaline
       • provides mechanical support for the respiratory tree, nose, articular surfaces, and developing bones
         • found on most joint surfaces, commonly on ribs and nose though
     • fibrocartilage
       • helps fill in the torn part of the cartilage
         • found predominantly in the intervertebral disks and at the insertions of ligaments and tendons
     • maintains strength, elasticity and shape in most of its areas
       • found in epilogottis and pinnae

5. definition

   • Tissues are groups of cells that have a similar structure and act together to perform a specific function.

6. why you scroll down here

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