Difference Between Shark And Shark

1177 Words 5 Pages
In this essay both the digestive system of a shark and a human have been researched. While investigating, it has been found that there are many similarities and differences between both species of animals. To begin, sharks live in an aquatic environment surrounded by water and other aquatic animals. While humans live on dry land surrounded by multiple mammals in urban and rural areas. Sharks mostly prey on smaller fish . Some of the larger shark species feed on seals, sea lions, and other mammals (carnivores). Humans have a diet consisting of a range of plant and animals (herbivores). Both animals have adapted to their environment. Sharks can adapt quickly in different environments by altering their physical features to their settings. The …show more content…
These are the teeth that you use to take bites of your food. Your four canines are your sharpest teeth and are used for ripping and tearing food apart. However, Humans don’t use these teeth as much as others. Molars are also used for chewing and grinding food. Primary molars, also known as deciduous molars (Refer to Diagram 1). The oesophagus is long muscular tube that transports food from the mouth to the stomach and it contains the pharynx. Peristalsis is a series of wave like muscle contractions which transports food to the stomach. The procedure of peristalsis begins in the oesophagus when a bolus of food is swallowed. The wave motions of the muscle in the oesophagus transport the food to the stomach (Refer to diagram 2). The stomach which is a j-shaped sack that uses enzymes and acids to break down food. The stomach contains four different parts as well as four layers of mucosa. The j-shaped then stores food and allows time for chemical digestion to occur. It then travels to the small intestine which digests 90% of the food while extracting necessary nutrients and minerals. The small intestine consists of three parts. The first part, called the duodenum, connects to the stomach. The middle part is the jejunum. …show more content…
This is unlike the human digestion in the mouth, as humans do a lot of physical digestion by chewing their food. Additionally, humans also use their saliva and tongue to help start the process of breaking down the food. Sharks however do not do this process instead the buccal cavity which secretes mucus to aid in swallowing. Moreover, both sharks and humans have many differences and similarities when talking about the stomach. To begin, both species use the stomach to help digest and break down food. Furthermore, differences between them include sharks having a u-shaped stomach while humans have a J-shaped one. Besides the stomach also having similarities and differences is the (small) intestine. The sharks are short while the humans are long. The oesophagus of both animals has differences and similarities. To begin, the oesophagus of a shark is short and wide while the humans is long and thin. However, similarities include the fact both are used to create a direct path between the mouth and the stomach. Humans and sharks both have a rectum and the both have similarities and differences between them. A similarity includes the fact both are used to carry store waste before it is excreted. A difference however is that a shark will release salt into the water. In addition, a shark’s stomach lining has with various secretory cells. Some of these cells produce

Related Documents