Orcas And Killer Whales

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Orcas, also known as killer whales are among the most aggressive types of hunter in the ocean. They are the biggest dolphins in existence and are fierce carnivorous predator that can be found around the world, but much commonly in highly productive areas of cold-water upwelling, such as the Pacific Northwest, along northern Norway’s coast in the Atlantic and the tiger latitudes of the Southern Ocean. Killer whales favour cold waters, they can stay submerged for more than 5 minutes and occasionally for more than 15 minutes in a single dive. Orcas eat varied components such as seabirds, squid, fish, sea lions, seals, octopuses, sea turtles and sharks.

Since both human and orcas are mammals, the killer whale’s internal circulation system and
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Orcas have blowhole instead of nasal cavity. The orcas breaths through a blowhole located at the top of the head, it 's covered by the muscular flap when the muscular flap is relaxed the blowhole is closed and the muscular flap contracts the hole opens and exchange the gases. Orcas also have bronchi which is made of cartilage rings and smooth muscle branch from the trachea into each lung and create the network of narrower finer intricate passage that supply the lungs with air. T?he structure of larger bronchi is similar to trachea. The bronchi inter cell tissue is lined with mucus and cilia which continue to filter the inhaled air and get rid of any leftover environmental contaminants. The walls of the bronchi are lined with muscle tissue which can control the flow of air going into the lungs, such as during physical activity, the muscles relaxa and allow more air to go into the …show more content…
The heart works by pumping the blood throughout the internal circulatory system to deliver the oxygen and nutrients to the body cells. There are some features about the heart which allows more efficient respiration system. The heart have a left atrium and left ventricle. The left side of the heart is called systemic circulation which only pumps the oxygenated blood to the body and the right side of the heart is called pulmonary circulation only pumps deoxygenated blood from the body to the lungs. They are completely separated by septum, thus, no mixing of oxygenated blood and deoxygenated blood. The most important adaptation that orcas have and allows them to stay submerged more than 15 minutes, it’s because they have a more abundant supply of red blood cells and a higher concentration of hemoglobin inside their blood which allows for a larger amount of oxygen to be stored in the blood for their deep dive. There are some features about the blood for orcas which enables their ability to dive for more than 15 minutes. Orcas store the oxygen molecules within their bodies and transport these oxygen molecule around their body in a protein called hemoglobin. Hemoglobin is what

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