Work on high pressure and animal models adjusted to high pressure

Livaić, Anja Eloise (2016) Work on high pressure and animal models adjusted to high pressure. Bachelor's thesis, Faculty of Science > Department of Biology.

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Abstract

With increase of depth pressure increase too and gasses are compressed. Gases at elevated pressure can disturb normal functions of organism. Nitrogen has narcotic effect, oxygen has detrimental effect on the nerves and carbon dioxide in case of damaged diving equipment can cause narcosis and anesthesia. If diver spend so much time in sea that large amounts of nitrogen are dissolved, and than suddenly emerge to the surface nitrogen create a lare number of bubbles in body fluids - decompression disease. In humas this can happen at the depths of 10-20 meters, but there are organisms which are adjusted to life in depths. Weddel seal has adjustments that help her to dive very deep (600 meters) without complications. During the dive their lungs are not in function so most nitrogen don't enters the blood circulation. This prevent occurrence of bubbles. Seals also have a large amount of mioglobin and hemoglobin, they can control blood supply in organs, and they don't have residual volume in lungs. The question is how we can apply this knowledge on humans so that people can better adjust to life in great depths. While studing phisiology of diving in humans it's find out that there is „answer to dive“ - change in blood flow and reduction in heart rate. As a result, brain and heart are constantliy supplied whit oxygen. Also, during the dive diaphragm becomes convex, pulmonary arteries are clogged and diameter of the herat is increased. These adjustments can be improved during the practise.

Item Type: Thesis (Bachelor's thesis)
Supervisor: Lisičić, Duje
Date: 2016
Number of Pages: 16
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Palma Dizdarevic
Date Deposited: 04 May 2017 10:55
Last Modified: 04 May 2017 10:55
URI: http://digre.pmf.unizg.hr/id/eprint/5494

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