What function do cells have in the human body?

Question

I really want and need to know what function(s) do cells have in the human body! Thanks so much!

Answer 1

All of our functions are carried out by cells. Our red blood cells transport oxygen to our other cells. Our white blood cells engulf foreign particles. Our osteoclasts break down bone and our osteoblasts build up our bones. Our neurons transmit information from our sensory/motor system and within our brains. Our epithelial cells line the surfaces in our bodies. Our secretory cells secrete fluids. Our epidermal cells serve as our outer layer of skin and the dermal cells are the lower level where our sweat and oil glands are. Hope that helps some.

Answer 2

There are about 210 types of human cells in adult body.
The following are groups of major cells. Each cell has different function so it is not possible to descibe them all.
1 Keratinizing epithelial cells
2 Wet stratified barrier epithelial cells
3 Exocrine secretory epithelial cells
4 Hormone secreting cells
5 (Gut, Exocrine Glands and Urogenital Tract)
6 Metabolism and storage cells
7 Barrier function cells (Lung, Gut, Exocrine Glands and Urogenital Tract)
8 Epithelial cells lining closed internal body cavities
9 Ciliated cells with propulsive function
10 Extracellular matrix secretion cells
11 Contractile cells
12 Blood and immune system cells
13 Sensory transducer cells
14 Autonomic neuron cells
15 Sense organ and peripheral neuron supporting cells
16 Central nervous system neurons and glial cells
17 Lens cells
18 Pigment cells
19 Germ cells
20 Nurse cells

Answer 3

well some different cells have different functions thats why similar cells group together to form tissues which carries out movement there are blood cells which carry oxygen,waste products nerve cells transmit impluses and send messages throughout the body

Answer 4

some are Good And some Are BAd cells, RedbLood Gives Oxygen White Blood Cells Are For immunizations.. and CAncer cells Are Mutated CElls....

Answer 5

1-epithelial tissue. 2-connective tissue. 3-muscular tissue. 4-nervous tissue. this if you don't know the classification of tissues but you must find the functions your self as it is a very big issue.

Answer 6

Well neurons help the body to think, there's a huge dense cluster that most school kids use to answer their homework!

Answer 7

Cell biology (also called cellular biology or cytology, from the Greek kytos, "container") is an academic discipline that studies cells. This includes their physiological properties, their structure, the organelles they contain, interactions with their environment, their life cycle, division and death. This is done both on a microscopic and molecular level. Cell biology research extends to both the great diversity of single-celled organisms like bacteria and the many specialized cells in multicellular organisms like humans.

Knowing the composition of cells and how cells work is fundamental to all of the biological sciences. Appreciating the similarities and differences between cell types is particularly important to the fields of cell and molecular biology. These fundamental similarities and differences provide a unifying theme, allowing the principles learned from studying one cell type to be extrapolated and generalized to other cell types. Research in cell biology is closely related to genetics, biochemistry, molecular biology and developmental biology.

Processes in cell biology
Movement of proteins
Every cell typically contains hundreds of different kinds of macromolecules that function together to generate the behavior of the cell. Each type of protein is usually sent to a particular part of the cell. An important part of cell biology is investigation of molecular mechanisms by which proteins are moved to different places inside cells or secreted from cells.

Most proteins are synthesized by ribosomes in the cytoplasm. This process is also known as protein biosynthesis or simply protein translation. Some proteins, such as those to be incorporated in membranes (membrane proteins), are transported into the ER during synthesis and further processed in the Golgi apparatus. From the Golgi, membrane proteins can move to the plasma membrane, to other subcellular compartments or they can be secreted from the cell. The ER and Golgi can be thought of as the "membrane protein synthesis compartment" and the "membrane protein processing compartment", respectively. There is a semi-constant flux of proteins through these compartments. ER and Golgi-resident proteins associate with other proteins but remain in their respective compartments. Other proteins "flow" through the ER and Golgi to the plasma membrane. Motor proteins transport mebrane protein-containing vesicles along cytoskeletal tracks to distant parts of cells such as axon terminals.

Some proteins that are made in the cytoplasm contain structural features that target them for transport into mitochondria or the nucleus. Some mitochondrial proteins are made inside mitochondria and are coded for by mitochondrial DNA. In plants, chloroplasts also make some cell proteins.

Extracellular and cell surface proteins destined to be degraded can move back into intracellular compartments upon being incorporated into endocytosed vesicles. Some of these vesicles fuse with (lysosomes) where the proteins are broken down to their individual amino acids. The degradation of some membrane proteins begins while still at the cell surface when they are cleaved by secretases. Proteins that function in the cytoplasm are often degraded by proteasomes.

Other cellular processes
* Cell division - The origin of new cells.
* Cell signaling - Regulation of cell behavior by signals from outside.
* Active transport and Passive transport - Movement of molecules into and out of cells.
* Adhesion - Holding together cells and tissues.
* Transcription and mRNA splicing - gene expression.
* Cell movement: Chemotaxis, Contraction, cilia and flagella
* DNA repair and Cell death
* Metabolism: Glycolysis, respiration, Photosynthesis

You could get more information from the link below...

Answer 8

What function do bricks have in a building?