Why are cells and tissues important?
Cells are the basic building blocks of living things. Cells provide structure for the body, take in nutrients from food and carry out important functions. Cells group together to form tissues?, which in turn group together to form organs?, such as the heart and brain.
What do you mean tissue?
Tissue, in physiology, a level of organization in multicellular organisms; it consists of a group of structurally and functionally similar cells and their intercellular material.
Can tissues survive by themselves?
Without cell division, long-term tissue survival would be impossible. Inside every tissue, cells are constantly replenishing themselves through the process of division, although the rate of turnover may vary widely between different cell types in the same tissue.
What do tissues need to survive?
To survive, every cell must have a constant supply of vital substances such as sugar, minerals, and oxygen, and dispose of waste products, all carried back and forth by the blood cells. If too many cells in an organ die too quickly, the organ itself may be damaged. But all cells will eventually die.
What are the 5 survival needs of the human body?
These are: air, water, food, shelter, sanitation, sleep, space, and touch.
How do tissues work together as organ?
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
How are tissues formed?
Tissues are formed from the assemblage of cells and intercellular materials in various proportions in which one component predominates. In nervous tissue as an example, nerve cells predominate while in connective tissues such as Ligaments and Tendons, intercellular fibrous materials predominate.
How important is tissue repair?
Tissue repair is an essential mechanism to maintain the integrity and function of the body in response to a variety of both acute and chronic injuries and disease states.