Lab 1 – The digestive system and food safety Scenario/Summary One of the first t

Question

Lab 1 – The digestive system and food safety

Scenario/Summary

One of the first topics that we need to explore is our digestive tract. Each step of digestion has its own function. Chewing, for example, increases the surface area of food particles (physical digestion) so that the enzymes in the mouth can start breaking the nutrients down (chemical digestion). Review the two links and complete the lab assignment stated below.

Deliverables

First examine the interactive links provided and then follow the steps below. The assignment should

be two pages maximum, double spaced, 12-point font, and have one-inch margins with standard

APA referencing. Lab reports are to be written in Microsoft Word and submitted for grading.

Lab Steps

Part 1

There are several parts to this Lab. Part 1 consists of listing all of the parts of the digestive system with either a list or photo. Many people take a screenshot and use it for Part 1. Feel free to also list the parts as well if you cannot figure out how to take a screenshot.

Part 2

Part 2 technically consists of two parts. The first one includes describing the location of each body part. For example, the appendix is located on the right side of the body under the ascending colon. Another way to do this part would be to write out the parts and put a location/description next to it. The second part of Part 2 for this section is to describe the manner in which you will retain the information of where each body part is located. An example would be, "I will remember the location of each body part by reviewing the photo and memorizing each location." Some classmates develop interesting methods of memorizing where all of the parts are located, like using mnemonics. Feel free to be creative.

Explanation / Answer

Human body consists of many parts in which digestion takes place starting from the initial stage

Mouth located on the lower middle end of the face also known as buccal cavity helps in chewing and crushing the food particles.Food is simultaneously mixed with saliva hence carbohydrates starts to digest in the mouth.

Next the bolus (chewd food) goes into oesophagus(food pipe) which is long tube like structure and runs across the neck and then is carried towards the stomach. No digestion takes place in Oesophagus.

Oesophagus opens into a bag like structure known as Stomach located below liver and spleen. The food mixes with HCL acid present in the stomach and stimulates digestive enzymes pepsin helps in digestion of protein, carbohydrates etc.

Then the undigested food is carried towards intestine located in the abdomen where the absorbtion takes place by the hairy like structure known as celia.

Finally the undigested food is thrown out of the body in the fork of nitrogenous waste through anus.

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