The digestive systems consists of the mouth, oesophagus, stomach, liver, pancreas, small and large intestines and anus. The oral cavity is extremely vital in the process of chewing breaking down food. In addition, the saliva, which softs the food we chew comprises of enzymes that help with the process of digestion. The food that we consume goes down into the oesophagus which is basically a long tube that contains muscles which allows food down into the stomach. Both oesophagus and stomach use voluntary and involuntary movements.
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.
The mouth and stomach perform both chemical and mechanical digestion. Nutrition is the process of taking in organic substances and minerals for the seven life processes. E.g. energy for growth and tissue repair. A person is described as malnourished if
Foods of various types have different ways of breaking down when in contact with the body’s stomach acid. The digestive system is a series of organs that make up what is called the GI tract. The GI tract contains the mouth, esophagus, stomach, small intestine, large intestine, anus, liver, pancreas, and gallbladder. The digestive system works as the food travels through each of the organs and uses bacteria to help with the digestion. The GI tract and bacteria help to break down and digest the food and liquids you eat and drink each day in order to get the nutrients.
In this section I will explain how two of the body systems interrelate to perform a function. My two body systems are the cardiovascular system and the digestive system and how they work together to enable food to be digested. First of all, the digestive system works by passing food through the human system, whilst breaking it down and absorbing nutrients. The circulatory system transports the oxygen and other compounds through our bodies. These two work together to process and circulate nutrients so our cells can use them for fuel.
List the structures and functions of the lymphatic system. The lymphatic system consists of capillaries, vessels, nodes, and other organs that transport a fluid called lymph from the tissues as it returns to the bloodstream. The lymphatic tissues of the organs filters and cleans the lymph of any debris, abnormal cells or pathogens. It also transports fatty acids from the intestines to the circulatory system. 3.
The alimentary tract of starts from mouth, there they have beak for breaking the prey’s shell and it is broken down to small pieces in that buccal mass consisting of mouth, pharynx, radula and salivary glands. Salivary glands secrete digestive enzymes while another pair secretes a toxin which paralyses the prey making it easy. Then food passes through oesophagus which has more digestive glands and transferred to crop which is a temporary storage of partly digested food before it enters the stomach. Stomach is a very muscular organ here the food is churned up into a slush in the stomach and it enters the caecum. In the caecum, where most of the absorption happens, food is sorted into fluids and particles.
The muscular system might be the most important system in the whole entire body. This system helps us digest food and keeps our heart and lungs moving. In the body there are two different types of muscles: the voluntary and involuntary. The muscular system helps you move because it helps your joints move which helps your bones bend. All of the major organs in this system are the heart, the lungs, and the digestive tracks.
It also takes care of the systems you do not think of consciously, such as the digestive and cardiovascular systems. Anatomy of the Nervous System The nervous system includes the brain, spinal cord, sensory organs and nerves. The nervous system acts as a wire that transfers messages from the brain to the different parts of the body using the spinal cord, which contains nerves that connect to every organ and body part. The nervous system can be divided into the following: 1.
Human is a complex structure as many biological systems make human and animal life possible. There are many vital systems in human body that perform function necessary for survival. Among the many systems in human body the endocrine system is of utmost importance. Endocrine system is the bodily mechanism which is responsible for the secretion of certain hormones through the involvement of glands. Endocrine glands are the primary part of endocrine system which are as; thyroid, pituitary, pancreas, adrenals, gonads and parathyroid.