Gastrointestinal Tract
This essay will be reviewing the gastrointestinal tract (GI tract), looking at the components and their functions. It will explore how the system works, how it can be assessed by a clinician and the ethical and practical issues related to when assessing the GI tract. In relation to this, I will also be analysing how the endocrine system and autonomic system correlate to the gastrointestinal tract.
How it functions
Marieb (2016) states that the gastrointestinal tract (alimentary canal) is a long tube that goes from the mouth to the anus. The main function of the GI tract is to transport, digest and absorb food. The components of the GI tract are- the mouth, pharynx, oesophagus, stomach, small intestine and large intestine. The function of the GI tract is to digest the food, it takes …show more content…
The small intestine is located in the central, upper umbilical. When the chyme enters the duodenum, two hormones will be produced: secretin and cholecytokin. These hormones will inhibit gastric secretion and gastric motility and therefore the chyme will mix with the bile and pancreatic juices (Ross and Wilson, 2014). The small intestine is lined with epithelial tissues and even closer are villi and micro villi, which create a large surface area for the small intestine which allow it to absorb nutrients. The duodenum receives bile from the liver and gallbladder, pancreatic juices and pancreatic enzymes. The pancreatic juices contain bicarbonate ions which are alkaline and when mixed with bile and pancreatic juices it will create a pH of 6 to 8 which allow pancreatic enzymes to function ( Ross and Wilson, 2014). The jejunum is where majority of the nutrients are absorbed and ileum is where absorption of vitamins such as A, B12, E, D, K take place ( Ross and Wilson,
This essay will be reviewing the gastrointestinal tract (GI tract), looking at the components and their functions. It will explore how the system works, how it can be assessed by a clinician and the ethical and practical issues related to when assessing the GI tract. In relation to this, I will also be analysing how the endocrine system and autonomic system correlate to the gastrointestinal tract.
How it functions
Marieb (2016) states that the gastrointestinal tract (alimentary canal) is a long tube that goes from the mouth to the anus. The main function of the GI tract is to transport, digest and absorb food. The components of the GI tract are- the mouth, pharynx, oesophagus, stomach, small intestine and large intestine. The function of the GI tract is to digest the food, it takes …show more content…
The small intestine is located in the central, upper umbilical. When the chyme enters the duodenum, two hormones will be produced: secretin and cholecytokin. These hormones will inhibit gastric secretion and gastric motility and therefore the chyme will mix with the bile and pancreatic juices (Ross and Wilson, 2014). The small intestine is lined with epithelial tissues and even closer are villi and micro villi, which create a large surface area for the small intestine which allow it to absorb nutrients. The duodenum receives bile from the liver and gallbladder, pancreatic juices and pancreatic enzymes. The pancreatic juices contain bicarbonate ions which are alkaline and when mixed with bile and pancreatic juices it will create a pH of 6 to 8 which allow pancreatic enzymes to function ( Ross and Wilson, 2014). The jejunum is where majority of the nutrients are absorbed and ileum is where absorption of vitamins such as A, B12, E, D, K take place ( Ross and Wilson,