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The Digestive System
What are the main functions in digestion of the
a) mouth
b) stomach
c) small intestine
The mouth takes in the food and uses the teeth and the salivary glands
do break down the food so it could move onto the next phase. The teeth
chew food while the salivary glands, liver, bile duct and pancreas
produce digestive juices to break down food.
The stomach is a L shaped, organ situated on the left side of the
abdominal cavity beneath the diaphragm. At either end of this organ is
a sphincter muscle which contracts and relaxes to control the movement
of food in and out of he stomach. The stomach churns the food and
releases gastric juices to help break it down. The gastric juices
contain hydrochloric acid and enzymes such as pepsin. Hydrochloric
acid kills any harmful bacteria and helps to dissolve the food. Pepsin
begins the digestion of protein by breaking it down. Food can stay
within the stomach for about 5 hours and leaves in a liquid form
called chyme.
The small intestine is over 6 metres long and is the place where most
of the nutrients are absorbed. There are three parts to the small
intestine. They are the duodenum, the jejunum and the ileum. The
inside of the small intestine is covered by millions of tiny finger
like projections called villi. The shape of the villi ensures a large
surface area so that the digested food can be absorbed quickly.
What is peristalsis and where does it occur?
Peristalsis is the process of food being propelled downwards, this
takes place in the oesophagus. Peristalsis is muscular contractions
that squeeze and relax the walls of the oesophagus.
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* Excess amino acids are broken down and converted into urea
* Drugs and poisons are broken down
* Antibodies and antitoxins are made
What organs make up the urinary system?
The urinary system are made up of the following organs,
* The kidneys/renal organs
* The ureter
* The bladder
* The urethra
What is the difference between a male and female urethra?
The male urethra is a common canal for the urinary system and
reproductive system and is 18-20cms long. The female urethra. In the
female it serves as the urinary system only and is 4cm long.
What is the main function of the urinary system?
The main function of the urinary system is to keep the body in
homeostasis (balanced body). The system also helps to control the PH
of the blood and regulate blood pressure.
•The forty five year old patient is diagnosed with the progressive cirrhosis inflaming the liver along with the parenchymal cells. The plain symptoms is manifested primarily because of the augmentation of edema internally in the lower abdomen.
2. Esophagus: 10 in. long and extends from the pharynx to the stomach. Food moves down the esophagus by the peristalsis. The sphincter, a circular muscle at the entrance of the stomach opens and closes to allow food to enter the stomach.
A digestive system is where the food is passed through the animal’s body, as is broken down and used for different and specific reason to the animal. There are 3 main digestive systems; these are Monogastric (carnivore), Hindgut Fermenter and a Ruminant. Each of these digestive systems digests foods using nearly the same organs, but for different functions.
The body uses various organs and chemicals to break down food. The breakdown of food he...
Stomach, an organ belongs to the digestive system, plays an important role in human body. This J-shaped organ can be full with one liter of food. Stomach is located on left upper part of abdominal cavity, it connects the esophagus (upper) with the small intestine (below). To the left of the stomach, there is a spleen and to the right of it, we’ve got the liver. There are four sections of the stomach: cardia, fundus, body and pyloric. To control the openings into the stomach, the gastroesophageal sphincter relaxes and allowing food leave the stomach is the function of pyloric sphincter. The stomach wall has three layers of muscles that help it contracts in all direction to break food into smaller molecules. Moreover, this organ is lined by mucus coat to neutralize acid
Comparing the efficiency of the digestive system. The digestive system is where the food is passed through the body, separating the good part for usage and the indigestible part for waste. There are three types of digestive system, monogastric (carnivore and omnivores), hind gut fermenter and ruminant. Monogastric includes animals such as pigs, dogs. An example of an animal which is a hind gut fermenter is a horse, rabbit and an example of a ruminant is a cow.
The human body is like a machine that needs fuel to be able to accomplish certain tasks. Too much fuel or to little fuel can have a great impact on how the machine runs. Food is the fuel that runs the human body. Making the right food choices is crucial to a person’s health. Making unhealthy food choices can lead to the development of chronic diseases such as diabetes or cancer. Along with making the right food choices, it is also important to eat those foods in proper portions. Every person is different, so their portions will also be different. There are several factors that influence a person to eat food. Such as hunger, emotions, environment, availability, family and many more.
This is a combination of different set of organs which changes whatever we eat or drink in things that the body uses for growth, energy and repair. The body usually absorbs the nutrients, after the food has been broken down by different chemical processes, the rest is normally expelled as waste product. This whole process can usually take up to several hours or less. The digestive system is also known as the alimentary canal or the gastrointestinal tract. (Tucker L. 2005).
The beginning process of digestion starts as pizza enters the gastrointestinal tract through the mouth, where the oral cavities begin mechanically breaking down pizza by the cutting, ripping, and grinding actions of the teeth. As the pizza breaks down it is mixed with saliva; salvia contains salivary amylase, this converts the starches in carbohydrates into simple sugars. Therefore, as your saliva and rolling motion of the tongue turns the pizza into a soft, pliable ball called a bolus. As the bolus slides down into your throat (pharynx), this allows for you to swallow. Within the occurrence through the breakdown of complex molecules into a simpler one just took place, which is the chemical digestion accomplished by enzymes.
Food comes in the mouth, and chewing and saliva start to break it up and make it smaller to swallow. Then, the food goes down through the esophagus to the stomach. Moving of the stomach’s muscular wall keeps going to break down the food. The grinded up food eventually passes
In the human body, there are a number of systems that have their own importance and provide different functions to help keep us alive. One of these systems is the urinary system, also known as the renal system. As blood courses through the body, waste products are transferred into the bloodstream that needs to be extracted. The urinary system is designed to help the body remain free of excess water and waste that we no longer need. This particular system is made up of two kidneys, two ureters, a urinary bladder and a urethra that produces, stores, and then excretes urine out of the body. When it comes to the urinary system,
The whole purpose of your digestion system is to break down and absorb the energy and nutrients it needs from the food you eat. The sandwich, strawberries, and orange juice you have just consumed is going through this process right now! The process of digestion begins with ingestion, this is when you take a bite of what you have planned to eat. When you took a bite of your sandwich and strawberry slices you were essentially beginning the process of digestion. Second comes the job of your digestion, which is a much more time-consuming and complex process for your digestive system. It begins once you have began chewing your food. There are two known types of digestion, these include Mechanical digestion, which is when you “physically break down the food into smaller pieces”, for instance chewing a burger and having it result in several chunks, and Chemical Digestion which is when you chemically break down your food, such as eating a slice of br...
The human digestion system is very complex. It starts with the mouth, salivary glands, pharynx, esophagus, stomach, liver, pancreas, gallbladder, small intestine, large intestine, then ends/exits with the anus. Each step is essential to the whole system. For example, the mouth chews food and mixes it with saliva produced by the salivary glands, and then the pharynx swallows chewed food mixed with saliva, this is followed by the food traveling through the esophagus to the stomach where the food gets a bath and mixes with acids and enzymes. After the stomach, the liver, pancreas, and gallbladder produce, stores, and releases bile and bicarbonates. Bile is produced in the liver and aids in digestion and absorption of fat while the gallbladder stores bile and releases it into the small intestine when needed. Following the process into the small intestine, this is where nutrients will be absorbed into the blood or lymph (most digestion occurs here). Next is the large intestine this is where water and some vitamins and minerals are absorbed. Finally, it is the end of the road, the anus. At...
The human’s sweaty hands grabbed me into his mouth and his unflossed molars grinded me to pieces. The mouth was the gateway to the digestive system. It takes the food (me!) and breaks it down into tiny pieces for energy. Humans have four kinds of teeth:
The digestive system is a very important system in the human body. It is a group of organs that work together to turn food into energy and nutrients in the entire body. The food that was chewed in a humans’ mouth now passes through a long tube that is inside of the body that is known as the alimentary canal. The alimentary canal is made of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. Those few things are not the only important accessories of the digestive system there is also the teeth, tongue, salivary glands, liver, gallbladder, and pancreas.