The digestive system

                                                                                                                                                                                    What is the digestive system?

The digestive system is the group of organs which are involved in the process of digestion. The digestion is the process of transforming food so that it can be absorbed and used by the body's cells.

Parts:

Mouth: The mouth is composed of: the teeths, the tongue and the salivary glands.

Pharynx: The pharynx, is a funnel-shaped tube connected to the posterior end of the mouth. The pharynx is responsible fot the passing of masses of chewed food from the mouth to the esophagus. The pharynx serves two different functions, it contains a flap of tissue known as the epiglottis that acts as a switch to route food to the esophagus and air to the larynx.

Esophagus: The esophagus is a muscular tube connecting the pharynx to the stomach that is part of the upper gastrointestinal tract. It carries swallowed masses of chewed food along its lenght. At the inferior end of the esophagus is a muscular ring called the lower stomach. gallbladder and pancreasesophageal sphincter or cardiac sphincter. The function of this sphincter is to close of the end of the esophagus and trap food in the stomach.

Stomach: The stomach is a muscular sac that is located on he left side of the abdominal cavity. In a person, the stomach is about size of their two fists. This major organ acts as a storage tank for food so that the body has time to digest large meals properly.

Small intestine: The small intestine is located just inferior to the stomach and takes up most of the space in the abdominal cavity. The entire small intestine is coiled. By the time food leaves the small intestine . all nutrients have been extracted. 

Liver and gallbladder:  The liver is a organ of the digestive system located to the right of the stomach. The liver is the second largest organ in the body.
The gallbladder is a small organ located just posterior to the liver. The gallbladder is uses to store and recycle fot the digestion of subsequen meals.

Pancreas:  The pancreas is a large gland located just inferior and posterior to the stomach. The pancreas secretes digestive enzymes into the small intestine to complete the chemical digestion of foods.

Large intestine:  The large intestine is a long, thick tube  It is located just inferior to the stomach and wraps around the superior border of the small intestine. The large intestine contains many simbiotic bacteria. Feces in the large intestine exit the body through the anal canal.

Relationship between systems:  Digestive system breaks down large molecules into simple molecules such as glucose. These are then transported to cells of the body via the circulatory system. 

The respiratory system causes the diffusion of oxygen into the blood and the diffusion of CO2 out of the blood. This oxygen is then transported to cells of the body via the circulatory system. 

When the cells have both oxygen and glucose they can respire to release energy, producing water and carbon dioxide (the CO2 is carried through the circulatory system to the lungs where it is removed through the respiratory system.

                                                                               






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Digestive system 

Main characteristics
- The digestive system have the responsability of digesting the food that we eat every day.
- The digestion lasts about six or eight hours 

Main parts



Salivary glands
Mouth
Oesophagus
Liver
Stomach
Gall bladder
Pancreas
Large intestine
Appendix
Small intestine
Rectum
Anus











Function
The function of the digestive system is to digest the food and absorb it nutrients with enzyme-rich juices


Digestion
The digestive tract begins at the lips and ends at the anus. It consists of the mouth, or oral cavity, with its teeth, for grinding the food, and its tongue, which serves to knead food and mix it with saliva; the throat, or pharynx; the esophagus; the stomach; the small intestine, consisting of the duodenum, the jejunum, and the ileum; and the large intestine, consisting of the cecum, a closed-end sac 
connecting with the ileum, the ascending colon, the transverse colon, the descending colon, and the sigmoid colon, which terminates in the rectum. Glands contributing digestive juices include the salivary glands, the gastric glands in the stomach lining, the pancreas, and the liverand its adjuncts—the gallbladder and bileducts. All of these organs and glands contribute to the physical and chemical 
down of ingested food and to the eventual elimination of nondigestible
waste.




Relationships with other systems
- Circulatory system:  it carries by the blood the nutrients to the digestive system
- Respiratory system: the digestive system provides nutrients by the  process of digestion , while respiratory system provides oxygen. Working together they produce energy for the body.
-  Excretory system: the liver receives blood from the intestines and filters  out post digestive waste such as alcohol before the blood is cycled back into the body 

EXCRETORY SYSTEM

The Excretory System is responsible for the elimination os wastes produced by homeostasis.

There are several parts of the body thar are involved in this process, such as sweat glands, the liver, the lungs and the kidney system.

Every human has two kidneys on the left and right sides of the body in vertebrates. They are located at the back of the abdominal cavity. Although the kidneys are the main organs of excretion, the skin, lungs and liver also help in excretion. Our skin has sweat glands, through which we excreted small amounts of water,urea and salts.

The systems are coordinated by the nervous and endocrine systems. The nervous system detects stimulates and answers it by sending nerve impulses to different parts of the body, activating or stopping some of their functions.

 

Digestive System

What is the digestive system?
The digestive system is the set of organs responsible for the process of digestion, ie the transformation of food so that they can be absorbed and used by the body's cells.

Parts



The main parts

Functions
The function of the digestive system is digestion and absorption. Digestion is the breakdown of food into small molecules, which are then absorbed into the body. The digestive system is divided into two main parts: The digestive tract is a continuous tube with two openings: the mouth and the anus. Food that passes through the internal cavity, or lumen, of the digestive tract does not technically enter the body until it is absorbed through the walls of the digestive tract and into the blood or lymphatic vessels. 

Relationship between systems
Is related with the circulatory sistem
The relationship between digestion and circulation is that the substances absorbed by the walls of the small intestine are carried by the blood to the liver and the blood vessels that communicate with the small intestine and other abdominal organs with the liver are called "circulation portal hempatica ".
                
Fun Facts

1. The detergent and the digestive system have in common that both contain proteases, amylases and lipases. In the digestive system, and as the name suggests, proteases are responsible for breaking proteins; amylases take care of carbohydrates and lipases, of fats.
2. 
   

The characteristics of the stomach vary from species to species. In fact, there are animals whose stomachs have several compartments; this is the case of cows, Giraffes and deer. On the other hand, there are other living beings (such as seahorses and platypus) that lack this organ, and the food they eat goes directly from the esophagus to the intestines.     

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                                       CIRCULATORY SYSTEM
           



-What is the circulatory system for:
 The circulatory system serves to transport blood throughout our body.Thanks to the incessant work of pumping the heart, they continuously transport blood throughout the body so that it can fulfill two basic functions:

1. Bring oxygen and essential nutrients to the tissues for proper functioning.

2. Collect the waste products of metabolism to take them to the bodies responsible for their elimination.

PARTES DE EL CIRCULATORY SYSTEM

                                 CIRCULATORY SYSTEM 

-PARTS:

The digestive system

what is the function of the digestive system?
The function of the digestive system is the digetion .Digestion  is the breakdown of food.
What is de digestion?
The process of digestion ,onethat takes the food we place in our mouth and turns into energy and some waste products.
What are the parts of the digestive system?
The mouth, the throat ,esophagus and then if you down more
 The stomach , small intestine ,and the  large intestine
 What is the relationship of the digetive system and the  respiratory system?
the results of repiratory activity allow the digestive tract to function,  the systems work togethrer to provide energy to body cells.
What is the pancreas ?
Breakdown protein , fat,and Carbohydrates from the food we eat
FUN FACTS

Two mains functions :to covert food into nutrients  and  to rid the food

 CIRCULATORY SYSTEM

The function of the circulatory system is transport all the oxigen and nutrients from the blood to all the body.  




    When someone has an accident and  results hurt, it can be dangerous because  the injury could be infected and then the infenction can be moved up and it can get to the heart.

This are the parts of the circulatory system:

 INTERNAL JUGULAR VEIN, SUBCLAVIAN VEIN,AUXILLIARY VEIN,CEPHALLIC VEIN, BRACHIAL VEIN, MEDIAN CUBITAL VEIN ,RENAL VEIN , COMMON ILIAC VEIN , EXTERNAL ILIAC VEIN , FEMORAL VEIN POPLITEAL VEIN , PERONEAL VEIN ,GREAT SAPHENOUS VEIN, the KIDNEYS ,THE HEART,EXTERNAL , INTERNAL CAROTID ARTERY , COMMON CAROTID ARTERY , BRACHIOCEPHALLIC ARTERY,SUBCLAVIAN ARTERY,AUXILLIARY ARTERY , ABDOMINAL SORTA ,BRACHIAL ARTERY,RENAL ARTERY ,COMMON ILIAC ARTERY ,INTERNAL ILIAC ARTERY ,RADIAL ARTERY , ULNAR ARTERY , EXTERNAL ILIAC ARTERY, DEEP FEMORAL ARTERY ,FEMORAL ARTERY , POPLITEAL ARTERY ,PERONEAL ARTERY ,POSTERIOR TIBBIAL ARTERY AND ANTERIOR TIBBIAL ARTERY.

INTERESTING FUN FUCTS : 


-In a 70-year lifetime the average human heart beats more than 2.5 billon times .


- An adult woman`s heart weighs about 8 ounces ,a man`s heart weighs about 10 ounces .


-A child`s heart is about the size of a clenched fist ;an adult`s heart is about the size of two fist.

-One 78 percent of the blood is made of water .

-Blood takes about 20 seconds to circulate throughout the entire vascular system . 

THIS VIDEO IS FOR THE PEOPLE THAT DIDNT UNDERSTAND MY WORK.

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                  CIRCuLAToRy  SYsTEM
  
              CHARACTERISTICS:
              It is a system that interacts with the blood and the inmune system,in a addition to presenting an important organ like the heart,highly specialized to guide the pumping functions to the whole body.
                
                 This are the parts of the circulatory system:
THE BLOOD:
It is the transporting liguid of red coloration conformed by three types of cells,platelets,white blood cells and red blood cells.

CAPILLARY VESSELS:
Small tubes that irrigate many parts of the body an organs ,and are responsible for bringing oxigen and nutriens to each part that requines it,or tissues that need it.

THE ARTERIES:
Are tubes that carry purified blood for organs of the body of greater magnitude,from the heart to each of the other organs.

THE HEART:
It is a muscular organ covered by external membranes and outside also covered by coronary arteries.The heart is responsible for reciving and pumping blood to all tissues of the body through the arteries and capillaries.

VEINS: 
Are conduits that carry blood to the heart,from the organs of the body.Two of them reach the heart,veins dig,are a pair,and four of them called pulmonary.  

FUNCTIONS:
The function is to transport oxygen carried by the blood and pumped by the heart,to each of the tissues and organs of additions to taking unused waste to the bodies responsible for filtering or eliminating toxins.

RELATION BETWEEN CIRCULATORY SYSTEM AND RESPIRATORY SYSTEM:
 When we inspire we are introducing different gases into our lungs including oxygen ,when the inspired air reaches the pulmonary alucoli,the oxigen passes to the blood and through the hemoglobin it is transported by the arteries to the cells of the muscles.

7 FUN FACTS:
The circulatory system is extremely long

Red blood cells must squeze through blood vessels

Big bodies have slower heart rates 

The heart needs not a body

The people have studied the circulatory system for thousand of years  

Phisicians followed an incorect model of the circulatory system for 1500 years 

Red blood cells are special