Parts of the Cell

The cell is the structural unit of all living beings and has the ability to perform essential life functions.

We also found the cell's cytoskeleton, all organs and the heart.

The cell membrane or Cytoplasmic

Is a thin layer that surrounds the cell and separates the cytoplasm from the external environment. The functions of the glycocalyx are cell recognition of mechanical and chemical protection.

Are fewer.

Stereocilia

Microvilli are extremely long, easily visible under the microscope, its internal structure consists of filaments.

ADHERENS TYPE JOINTS

Function as anchor points for each cell cytoskeleton. On both sides of the membrane there is a plate connecting the filament electron Cell.

EXPERTISE SERVING SECURE BASAL CELL.

pigmentos

Are colored substances, may be exogenous or endogenous from outside from the inside.

Among the endogenous can be those that are synthesized by the cell itself as melanin.

INTERMEDIATE FILAMENTS

Are characteristic of certain cell lines.

Microtubules grow from the centrosome of the cell.

ORGANELLES

A) RIBOSOMES

Are organelles that can only be described by electron microscopy. All these tanks are surrounded by plasma membrane.

G) MITOCHONDRIA

Organelles are elongated, are mobile, their organization within the cell is in places where more energy is required.

All cells have some possibility of movement. There are different mechanisms that cause cell mobility:

• Cell movement displacement.
• Cell movement without displacement.
• Can be of two types:
• The strain produced in the cell.
• Contractile movement
• Characteristics of muscle cells by microfilament.
• Those who do not produce cell deformation.
• Movimiento Browniano

They are shaking movements inside the cytoplasm to the bombardment of molecules in the cytoplasm.

Chromatin is associated with chromosomal DNA nucleoproteins, these can be of two types:

At the core there are 3 parts:

The fibrillar parts are loose strands of RNA and proteins.

The nitrogenous bases are of two types, which are two purine,adenine and guanine, and pyrimidines are thymine and cytosine.

CELL DIVISION

Two mechanisms of cell division:

MEIOSIS

In the process of meiosis of a diploid cell Makes 4 haploiddaughter cells. Such a division only made ​​the sex cells.

MITOSIS

With mitotic division of a stem cell we get 2 daughter cells exactly.

CELL DIFFERENTIATIOND

All body cells are different because they suffer some adjustmentsin order to specialize in a variety of functions, ie, the cells undergoa process of cell differentiation.
Through this process the cells will acquire a form and function wellin a particular specialized cell type, such as nerve cells, blood cells, muscle, etc.
These cells will also be assembling and forming tissues. There arecells capable of differentiating into various cell types and are calledpluripotent stem cells are called, there are cells capable of differentiating into any cell type and are called totipotent, ie the zygote.
Poorly differentiated cell population with high cell division capacityof such cells in the bone marrow that give rise to blood cells.

CELL DEATH

Inside the cell death are two types, apostosis and necrosis.
It affects only one cell and the cell says "suicide"by turning a seriesof enzymes called caspases that are the self-destruct the cell itself.
- The integrity of the cell membrane.
- When the cell has been infected by a virus.

Autolysis:

Occurs when intracellular lysosomes are going to cause cell destruction.

Heterolysis:

It occurs when other cells such as macrophages, responsible forcell destruction.