The Main Tissues
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EPITHELIAL
Epithelia is a type of cell with single or multiple layers that join together. The cells have many glands and cover most of the inner and outer surfaces throughout our body. Epithelial cells have many functions including; protecting and enclosing organs, and producing mucus. Some epithelia even have cilia to help manover the cells around, carry substances over and around the surface, and remove certain substances from a cell.
NERVES
The brain is the main control center of the nervous system. The spinal cord and nerves are the connections and passage ways. The nerves mainly react to things (reflexes) and send messages to keep your body from harm or to accomplish a specific task. There are four main types of nerve classifications:
- Cranial nerves - connects your senses (eyes, ears, nose, mouth, touch) to your brain
- Central nerves - connects areas within the brain and spinal cord
- Peripheral nerves - connects the spinal cord to your limbs
- Autonomic nerves - brain and spinal cord connect to major organs (heart, intestines, blood vessels, stomach etc.)
Connective
The connective tissue is the most complex out of the four main types and it has a large variety of functions. The tissue ranges of consistency by the soft feeling of gel to the firmness of bone. An example of a soft liquid-like connective tissue is blood. The connective tissue is considered a type of paste that helps keep the body together. The cells of connective tissue are greatly separated from each other within extracellular matrix, which is also known as fibroblasts. In addition, a quantity of other cells (lymphoid cells, mast cells, macrophages) might as well be existent.
Epithelia is a type of cell with single or multiple layers that join together. The cells have many glands and cover most of the inner and outer surfaces throughout our body. Epithelial cells have many functions including; protecting and enclosing organs, and producing mucus. Some epithelia even have cilia to help manover the cells around, carry substances over and around the surface, and remove certain substances from a cell.
NERVES
The brain is the main control center of the nervous system. The spinal cord and nerves are the connections and passage ways. The nerves mainly react to things (reflexes) and send messages to keep your body from harm or to accomplish a specific task. There are four main types of nerve classifications:
- Cranial nerves - connects your senses (eyes, ears, nose, mouth, touch) to your brain
- Central nerves - connects areas within the brain and spinal cord
- Peripheral nerves - connects the spinal cord to your limbs
- Autonomic nerves - brain and spinal cord connect to major organs (heart, intestines, blood vessels, stomach etc.)
Connective
The connective tissue is the most complex out of the four main types and it has a large variety of functions. The tissue ranges of consistency by the soft feeling of gel to the firmness of bone. An example of a soft liquid-like connective tissue is blood. The connective tissue is considered a type of paste that helps keep the body together. The cells of connective tissue are greatly separated from each other within extracellular matrix, which is also known as fibroblasts. In addition, a quantity of other cells (lymphoid cells, mast cells, macrophages) might as well be existent.