The Digestive System The digestive system is a system consisting of the mouth, oesophagus, stomach, gallbladder, small intestine, large intestine, the rectum and the anus. The functions of the digestive system are: • To break down food particles into molecules for digestion • To absorb into the bloodstream the small molecules produced by digestion • To eliminate un digested and unabsorbed foodstuffs and other waste products from the body The full digestive process begins at the mouth. The food enters the mouth and is chewed. This is call mastication and it gives the food a greater surface area which enables enzymes to break the food down making it easier to digest. The process of breaking down the food starts with the saliva in your mouth.
Some examples are the circulatory, the excretory, the muscle, and the digestive systems. For example, the digestion system is an organ system that digests the food a person eats. Some organs in the digestive system are the esophagus, rectum, stomach, liver, gall bladder, pancreas, large intestine, small intestine, and appendix. The digestive system is very important because without it, organisms would not be able to digest food. Food would just sit inside the body or go through it without the body taking any energy for fuel.
You are what you eat, foods are the main founder of nutrients for growth. Without proper diet, human cannot grow up normally. In order to get the nutrients from foods, process of digestion need to be been through. In human digestive system includes a few parts which carry out different processes, such as mouth, esophagus, stomach, small and large intestine and rectum. There are six steps of food digestion in human body which are food consumption, peristalsis, secretion, digestion, absorption and elimination (Marieb, 2004).
Ventilation/perfusion scans: Ventilation/perfusion scans, sometimes called a VQ (V=Ventilation, Q=perfusion) scan, is a way of identifying mismatched areas of blood and air supply to the lungs. It is primarily used to detect a pulmonary embolus. The perfusion part of the study uses a radioisotope tagged to the blood which shows where in the lungs the blood is perfusing. If the scan shows up any area missing a supply on the scans this means there is a blockage which is not allowing the blood to perfuse that part of the organ. Myocardial perfusion imaging: Myocardial perfusion imaging (MPI) is a form of functional cardiac imaging, used for the diagnosis of ischemic heart disease.
The flow of oxygenated blood to the tissues helps deliver nutrients such as amino acids and electrolytes, water and oxygen. Also, it’s responsible for removing metabolic waste from the cells and disposing of carbon dioxide. The cardiovascular system’s anatomy varies throughout the body and is connected by the arteries, veins, and capillaries. The main organ of the cardiovascular system is the heart. It 's located in the upper torso, chest area, as are some of the body 's major blood vessels.
Synthesize how might the digestive system and the circulatory system work together? Digested molecules of food, as well as water and minerals from the diet, are absorbed from the cavity of the upper small intestine. Most absorbed materials cross the mucosa into the blood and are carried off in the bloodstream to other parts of the body for storage or further chemical change. As already noted, this part of the process varies with different types of nutrients. 5.
6-78). It is the passageway between the pharynx and the stomach. “Each end of the esophagus is encircled by muscular sphincters that act as valves to regulate passage of material. The upper esophageal sphincter in the cervical part of the esophagus helps prevent air entering the esophagus during
Vesicoureteral Reflux (VUR) is the backward flow of urine from the bladder into the kidneys. The muscles of the bladder and ureter along with the pressure of urine in the bladder prevent urine from flowing backward through the ureter. Due to this reason, urine generally flows from the kidneys to the bladder. VUR allows bacteria, which may be present in the urine inside the bladder, to reach the kidneys. This may be lead to kidney infection, scarring and damage.
This system consists of the salivary glands, pharynx, mouth, esophagus, liver, gallbladder, stomach, pancreas, small and large intestine, and the anus. The brain controls drinking and feeding behavior and controls muscles for eating and elimination. The in return the digestive system sends sensory information to the
Mesothelioma most often begins in the pleura or peritoneum. The pleura surrounds the lungs and covers the chest cavity. The peritoneum covers most of the organs in the abdominal cavity. Other mesothelium tissue is also vulnerable to mesothelioma. These include the pericardium that surrounds and protects the heart; the tunica vaginalis testic which surrounds the internal male reproductive organs; and the tunica serosa uteri which is the membrane covering the internal reproductive organs in women.