Compare the structure of alimentary canal of mammals with birds
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The human body uses food and liquids for energy, growth, maintenance and repair. Before it can use food and liquids for these purposes, it must go through a process called digestion, which is carried out by the digestive system. The digestive system consists of the following organs: Mouth, salivary glands, oesophagus, liver, gall bladder, pancreas, stomach, large and small intestines, duodenum, rectum and the anus.
The process of digestion begins when a bite of food is taken. The teeth are then used to chew the food breaking it down into smaller and softer pieces. The food is also lubricated at this stage in the process by saliva produced in the salivary glands. Then, when the food is ready to be swallowed, a flap called the epiglottis blocks off the entrance to the windpipe, the soft palate rises to stop food entering the nasal cavity, and the food passes down the oesophagus, in a series of peristaltic waves, until it reaches the stomach, ready for the next stage of digestion.
The mouth of birds is distinctly different from humans. They have no teeth and their jaws are covered by a beak, which is in different forms depending on the bird. Birds, unlike humans, do not masticate or chew their food, as this is accomplished by the gizzard. The oesophagus of birds is large in diameter. Swallowing is accomplished
the same as humans, that is by peristaltic waves, which is in most birds aided by the extension of the neck.
bird digestion tutorial (raptor not parrot)
you haven’t lived until a Falcon pellets your lap
A human stomach is approximately 25 cm long. It is a J-shaped bag with strong, muscular walls which can stretch. These muscular walls contract and relax, churning the food up and making sure it is mixed very thoroughly with gastric juices. These gastric juices contain hydrochloric acid and enzymes, which, along with the churning of the stomach, eventually turn the food into a liquid called chyme. When this process has taken place, the chyme is pushed into the first part of the small intestine, the duodenum, ready for the next stage of digestion.
The human duodenum is a horseshoe shape organ, approximately 20 cm long. The purpose of the duodenum is to change the chyme into substances the body can use, with the help of different enzymes. It also neutralizes the acidic chyme making it safe to travel through the rest of the digestive system. Other organs which work with the
duodenum are the pancreas and the gall bladder. The pancreas forms the enzymes used by the duodenum, and insulin which is released straight into the bloodstream and taken to the liver. The gall bladder forms bile, which is also used by the duodenum. Once the chime has passed through the duodenum it has began to pass through the small intestine. This is a long, narrow tube, and although it is between 4 and 6 metres
long, it is coiled and looped tightly so that it fits into the abdominal space. The process of digestion is more or less finished, but the nutrients have to get out of the digestive system and into the rest of the body. This process is called absorption, and it takes
place as the digested food passes through the small intestine. Because of this it has a rich blood supply, both to nourish the small intestine, and to carry away the nutrients which are absorbed. After the chyme has passed through the small intestine, all the nutrients the body needs have been absorbed, and there is just one more stage it has to pass through before being excreted, the large intestine.
The process of digestion begins when a bite of food is taken. The teeth are then used to chew the food breaking it down into smaller and softer pieces. The food is also lubricated at this stage in the process by saliva produced in the salivary glands. Then, when the food is ready to be swallowed, a flap called the epiglottis blocks off the entrance to the windpipe, the soft palate rises to stop food entering the nasal cavity, and the food passes down the oesophagus, in a series of peristaltic waves, until it reaches the stomach, ready for the next stage of digestion.
The mouth of birds is distinctly different from humans. They have no teeth and their jaws are covered by a beak, which is in different forms depending on the bird. Birds, unlike humans, do not masticate or chew their food, as this is accomplished by the gizzard. The oesophagus of birds is large in diameter. Swallowing is accomplished
the same as humans, that is by peristaltic waves, which is in most birds aided by the extension of the neck.
bird digestion tutorial (raptor not parrot)
you haven’t lived until a Falcon pellets your lap
A human stomach is approximately 25 cm long. It is a J-shaped bag with strong, muscular walls which can stretch. These muscular walls contract and relax, churning the food up and making sure it is mixed very thoroughly with gastric juices. These gastric juices contain hydrochloric acid and enzymes, which, along with the churning of the stomach, eventually turn the food into a liquid called chyme. When this process has taken place, the chyme is pushed into the first part of the small intestine, the duodenum, ready for the next stage of digestion.
The human duodenum is a horseshoe shape organ, approximately 20 cm long. The purpose of the duodenum is to change the chyme into substances the body can use, with the help of different enzymes. It also neutralizes the acidic chyme making it safe to travel through the rest of the digestive system. Other organs which work with the
duodenum are the pancreas and the gall bladder. The pancreas forms the enzymes used by the duodenum, and insulin which is released straight into the bloodstream and taken to the liver. The gall bladder forms bile, which is also used by the duodenum. Once the chime has passed through the duodenum it has began to pass through the small intestine. This is a long, narrow tube, and although it is between 4 and 6 metres
long, it is coiled and looped tightly so that it fits into the abdominal space. The process of digestion is more or less finished, but the nutrients have to get out of the digestive system and into the rest of the body. This process is called absorption, and it takes
place as the digested food passes through the small intestine. Because of this it has a rich blood supply, both to nourish the small intestine, and to carry away the nutrients which are absorbed. After the chyme has passed through the small intestine, all the nutrients the body needs have been absorbed, and there is just one more stage it has to pass through before being excreted, the large intestine.
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