Pig Dissection Essay

Introduction

In this dissection that was conducted there were aims to be able to do within the dissection for example; to identify all organs in the pig and sheep’s digestive systems, describe the internal structures of different organs, and link the function to the structure.

Method

The dissection included the digestive system of a pig and sheep. The first part examined was the oesophagus an incision was made along the oesophagus to be able to examine inside the oesophagus. The next incision was made from the oesophagus down towards the stomach to be able to observe how the oesophagus changes. The stomachs were opened up to examine the internal structure and the appearance. Both intestines were cut open to see the process of digestion. This was done in both specimens.

Equipment

• Two Medical grade scalpel

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Furthermore, in the pig on the outside of the oesophagus it was lined with a moist pink tissue this is called the mucosa (WebMD, 2015). The oesophagus is known as a muscular tube which connects the pharynx to the stomach (WebMD, 2015). Diagrams show what was observed;

There are three main functions for a stomach. One main function is to be able to break down food efficiently, and so the food mixes with gastric juices and this speeds the process up. (REF ANAT BOOK). Another is to be able to begin the process known as protein digestion. Finally the stomach can act like a reservoir for food this mainly applies to large carnivores that will only eat every 3-4 days. (REF ANAT