EXCRETORY SYSTEM

The excretion is the elimination of the toxic residues that produce the cells of our body. In this respect, also the lungs are, as both kidneys, important organs excretores, since they eliminate a toxic residue, CO2 ( Dioxide of carbon).







The blood transports other toxic different residues to CO2 Up to the kidneys and these they concentrate them up to forming a liquid which we call urine.







It is the set of organs that produce and excrete urine, the principal liquid of waste of the organism(organisation). This it happens(passes) for the uréteres up to the bladder, where it is stored up to the micturition (to (urinate).After the urine be storing in the bladder it happens(passes) for a conduit called uretra up to the exterior of the organism(organisation). The exit of the urine takes place(is produced) by the involuntary easing of a muscle: the esfínter vesical that is located between(among) the bladder and the uretra, and also for the voluntary opening of an esfínter in the uretra.





The function of the kidneys is the production of urine.


The uréter is a pipe that leads the urine towards the bladder.

CIRCULATORY SYSTEM

The Circulatory System is the main transportation and cooling system for the body.The highway system of the Circulatory System consists off a lot of one way streets. The superhighways of the circulatory system are the veins and arteries.

Veins are used to carry blood *to* the heart.







Com funciona la circulacio de la sang?


Arteries carry blood *away* from the heart.

RESPITATORY SISTEM

FILM OF RESPIRATORY SISTEM

FILM OF PROCES OF DIGESTIVE SISTEM

DIGESTIVE SISTEM

DIGESTIVE SISTEM

PARTS OF THE CELLS

ANIMAL CELL ANATOMY

-Cell membrane : the thin layer of protein and fat that surrounds the cell.

-Centrosome: a small body located near the nucleus - it has a dense center and radiating tubules. The centrosomes is where microtubules are made.

-Cytoplasm: the jellylike material outside the cell nucleus in which the organelles are located.

-Golgi body : a flattened, layered, sac-like organelle that looks like a stack of pancakes and is located near the nucleus.

-Lysosome : round organelles surrounded by a membrane and containing digestive enzymes.

-Mitochondrion: spherical to rod-shaped organelles with a double membrane.

-Nuclear membrane: the membrane that surrounds the nucleus.

-Nucleolus: an organelle within the nucleus - it is where ribosomal RNA is produced.

-Nucleus: spherical body containing many organelles, including the nucleolus.

-Ribosome: small organelles composed of RNA-rich cytoplasmic granules that are sites of protein synthesis.

-Rough endoplasmic reticulum: a vast system of interconnected, membranous, infolded and convoluted sacks that are located in the cell's cytoplasm.

-Smooth endoplasmic reticulum: a vast system of interconnected, membranous, infolded and convoluted tubes that are located in the cell's cytoplasm.

-Vacuole: fluid-filled, membrane-surrounded cavities inside a cell.

TIPES OF CELLS

ANIMAL CELLS

VEGETAL CELLS

TISSUES OF THE HUMAN BODY

TIPES OF TISSUES

<- EPITHELIUM IMAGE

Epithelium - Tissues composed of layers of cells that cover organ surfaces such as surface of the skin and inner lining of digestive tract: the tissues that serve for protection, secretion, and absorption.

CONNECTIVE TISSUE IMAGE

Connective tissue - As the name suggests, connective tissue holds everything together. Connective tissue is characterized by the separation of the cells by an inorganic material, which is called extracellular matrix. Bone and blood are connective tissues.

MUSCLE TISSUE IMAGE

Muscle tissue - Muscle cells contain contractile filaments that move past each other and change the size of the cell. Muscle tissue also is separated into three distinct categories: visceral or smooth muscle, which is found in the inner linings of organs; skeletal muscle, which is found attached to bone in order for mobility to take place; and cardiac muscle which is found in the heart.

Nervous tissue - Cells forming the brain, spinal cord and peripheral nervous system.

UNIT 1

HUMAN BODY (APARATUS AND SISTEMS)

CIRCULATION SISTEM

APARATUS DIGESTIVE