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Human vs Shark
Transcript of Human vs Shark
A shark uses gills for respiration by letting water flow into the mouth and out through the gills. The filaments in the gills absorb oxygen from the water and out through the gill slits. The gill rakes protect the filaments from any particles in the water that might damage them.
The respiratory system (or ventilatory system) is a biological system consisting of specific organs and structures used for the process of respiration in an organism. The respiratory system is involved in the intake and exchange of oxygen and carbon dioxide between an organism and the environment
Sharks can respire by pumping water over their gills by opening and closing their mouths. From the mouth, water enters the gill chambers and exits through the gill slits. Blood in the gill filaments absorbs oxygen from the incoming water. Gill rakers, which are cartilaginous projections on the gill support structure, protect the delicate gill filaments from particles in the water that might damage them. Because sharks have low blood pressure, most must swim continuously because muscular contractions are needed to circulate the blood. The respiratory system of a shark is very different from a humans because sharks do not have a trachea, lungs, and a diaphragm for gas exchange. Instead of alveoli, the oxygen is absorbed by gills. Sharks also absorb oxygen from water rather than the air like humans do
How Their Different
By: Troy & Shawn