DIGESTION AND NUTRITION

Organs Organs are groups of tissues that are specialized to carry out specific functions Some examples are the stomach, lungs. Kidneys and heart.

Organ System An organ system is a group of organs working together that have a similar function. The digestive system is composed of organs such as the esophagus, stomach, small intestine, large intestine, liver and pancreas.

Organ System Organ systems within organisms work together closely to ensure proper functioning. For example, the digestive system could not complete its job if the circulatory system did not deliver the nutrients to the rest of the body.

Technology and Organ Systems X-rays have been used since 1895 to view bones and soft tissue was first viewed in Today we use barium to stain organs which allows x-rays to penetrate and produce a white image of the organs on a black background.

CAT Scans A computerized axial tomography scan, commonly referred to as a CAT scan, produces pictures of an object from many different angles using x-ray technology. The photos are entered into a computer which can reassemble the pictures to show 3-D images. It can distinguish the difference between gases, liquids and solids and is very useful for diagnosing head injuries.

Nuclear Imaging Nuclear imaging provides doctors with views of beating hearts or allows them to detect bone cancer without the use of surgery. It uses radiation that emits from within the body to produce information about the function of the organ, not just its structure.

Magnetic Resonance Imaging MRI technology works by using the spinning motion of the nucleus of an atom to produce an image of the internal structures of the human body. These images can show if organs are functioning properly and they can also determine if tumours are cancerous.

CONCLUSION All of these technologies can be used to monitor organs and organ systems within the human body. They are used as diagnostic tools to provide information about the structure and function of organs and organ systems.