The beginning of the digestive process starts with the smell and sight of food which activate the salivary glands. The mouth is the point at which food enters the digestive tract and continues the digestive process by chewing food. The food is then broken down into pieces and moistened by salivary glands which turn food into a bolus. The bolus goes down the pharynx into the esophagus which connects the pharynx to the stomach. The stomach is an organ that mixes food and secretes gastric juice. The bolus, once in the stomach, is mixed into a semiliquid mass called chime. The stomach is close together with the liver and pancreas but does not get assistance from these organs. The chime then enters…
During her high school years she was convinced to pursue engineering. She blossomed in engineering and graduated at age sixteen in 1973. The following year she went to Stanford University where she received a Bachelor of Science degree in Chemical engineering in 1977. She later went to Cornell University’s Medical College and began to study in Cuba, Kenya,…
The cardiovascular system which impacts deeply on human consciousness. The heart and the body’s blood-transporting network of arteries, veins, and smaller vessels form the circulatory or cardiovascular system. As blood is continuously pumped out from the heart and around the system in two circuits, it carries oxygen and vital nutrients to all parts of the body and removes harmful waste products from tissues. (P.169)…
Known as Marie Curie, Maria Sklodowska was born in Warsaw, Poland on November 7, 1867. Her siblings were Jozef, Zoasia, Bronya, and Hela; her parents were both teachers. Unfortanatly, Bronislawa, Curie's mother, died because of tuberculosis when Curie only at the young age of 10. Marie Curie was the top student in Warsaw's "floating university," which was a secret informal class…
Rachel Louise Carson was born on May 27 ,1907 , along the Allegheny River. Her father , Robert Warden Carson , was an insurance salesman whereas her mother , Maria Frazier , was a stay at home mother. At a young age Carson developed the hobby of reading . She particularly liked to read the “St. Nicolas Magazine”. Ironically , she later in her life publish multiple stories in that magazine. After elementary school Carson attended Parnassus High School , located in Kensington , Philadelphia. Four years later, she graduates from that school and earns a scholarship to Pennsylvania College for Women. She aims to major English and become an English teacher. In college she is inspired by her biology professor named Mary Scott Skinker and she changes…
The Digestive System is the name given to the sequential process that our bodies perform when ingesting food, and the breaking down of macromolecules into micromolecules so that the body can absorb it’s nutrients into the bloodstream and it’s cellular system to obtain energy for cellular respiration, and the excretion all indigestible waste products. This happens within the digestive tract, which starts at the Mouth or Oral cavity and ends at the Anus. (Reference Appended image 1,’ The Human digestive system and associated organs). The molecules of food that we eat are generally Polymers, i.e., large, complex Molecules that are composed of long chains of Monomers. Polymers are insoluble and therefore cannot be absorbed into our bloodstream and need to be assimilated into different absorptive products. Polymers have to be hydrolysed into smaller, soluble molecules. This process happens during the process of digestion. Food is broken down by mechanical or chemical means (Hydrolysis) and this process is aided by Enzymes. Enzymes are biological, process catalysing Proteins which massively speed up the breaking down of compound molecules into micromolecules to allow nutritional absorption. All digestive Enzymes are Hydrolytic, i.e., a water molecule is added to allow compound molecular breakdown and separation. All Enzymes have a unique shape to their ‘active site’ allowing only the target substrate to bond for biological processing. Enzymes have optimum operating requirements and can denature if the temperature becomes too warm or the environment too acidic or alkaline. Digestive Enzyme secretion is regulated by both the nervous and the hormonal systems. Hormones are a chemical substance signalling system that communicates from one set of cells to another set, the target cells, which will then trigger enzyme secretion.…
When Maya ate spaghetti bolognaise the bits of food that were broken down went through the digestive tract. The digestive tract is made up of a group of organs which include the stomach, small intestine, pancreas, liver and large intestine.…
The BIG MAC is placed in the mouth. The bread is mainly starch, the special…
4. Compare a small animal that soaks up food from its external environment with an animal with a tube type digestive system. What is/are the major advantage(s) of having a tube?…
3.|Which of following processes is the primary function of the villi of the small intestine?|…
The process of digestion can be fast, or can take some time depending on what a person has eaten. The time frame can also be affected by the person’s activity level.…
The enzyme, Amylase which is used to break down carbohydrates will work the best when heated at 40°C. Also, as the temperature increases the reaction rate of amylase increases too. However, the reaction rate of amylase will start decreasing when the temperature reaches the enzyme’s optimal temperature.…
The digestive process involves the mixing of food, the movement of food through the digestive tract, and a chemical breakdown of large molecules of food into smaller molecules. The digestive system is made up of the digestive tract and other organs that aid in digestion. The digestive tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. Those twisted tubes include the mouth, esophagus, stomach, small and large intestines, and the anus. There are other organs such as the tongue, glands in the mouth, pancreas, liver, and gallbladder that help with digestion, but are not part of the digestive tract.…
The principal structure of the digestive system is an irregular tube, open at both ends, called the alimentary (al-i-MEN-tar-ee) canal or the gastrointestinal (GI) tract.…
This essay will explain the function of the respiratory, digestive and cardiovascular systems and how they work together to produce nutrients and oxygen to the cells for cellular respiration (energy for the body)…