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Circulatory System. Liannette LaSanta 2B 1-2-14. Anatomy . This system is made up of the heart, blood, and many vessels. The heart is in the middle of the body, mainly on the left side, in a human. The three types of vessels are the veins, arteries, and capillaries .
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Circulatory System Liannette LaSanta 2B 1-2-14
Anatomy • This system is made up of the heart, blood, and many vessels. • The heart is in the middle of the body, mainly on the left side, in a human. • The three types of vessels are the veins, arteries, and capillaries. • The capillaries connect the veins and arteries, and they are also the smallest and most common blood vessels as well.
Functions • Functions are to fight pathogens, transportation, and regulate homeostasis. • The blood has white blood cells to fight and kill the pathogens, and also has antibodies to keep the body immune from certain pathogens the body has already dealt with. • Also, the blood removes waste and transports nutrients and oxygen throughout the body. • Arteries carry oxygenated blood away from the heart while veins carry they blood back to the heart. • The blood flow also helps keep a stable temperature in the body.
Tursiops Truncatus(bottlenose dolphin) • Has the most efficient circulatory system. • Holds their breath 2-3 minutes or longer if in danger or feeding. • Have a four chambered heart. • Can control where the blood flows too, such as sending blood only to important organs during a deep dive.
Adaptations • Dolphins have large blood volumes. • They also have large spleens. • Thermoregulation. • Nets to prevent the effects of water pressure on organs.
Nocardiosis • Nocardiosis is a bacteria that takes 3-5 days to 6 weeks to grow. • This disease forms lesions in the organs, usually the lungs. • Marine mammals that tend to get this are hooded seals, leopard seals, Atlantic bottlenose dolphins, beluga whales, and killer whales. • Both captive and wild marine mammals are effected. • Mammals get this by inhalation, inoculation, and ingestion. • Can be found in fresh or salt water.
Continued… • Death rate is 100%. • Some are put to sleep because of the severity of the disease, or die spontaneously.
DermochelysCoriacea(Leatherback Sea Turtle) • Has a three chambered heart. • Blood cells have nuclei. • High pressure systemic & a low pressure pulmonary. • Has complete separation between oxygenated and poor oxygen blood.
Adaptations • Maintain stable body temperature in extreme temperatures. • Can control heart rate. They slow down their heart to keep oxygen as long as possible when going deeper into the ocean. • Leatherback turtles can go 9 minutes between each heart beat.
Fibropapillomatosis • This is a tumor that sea turtles get. • Can grow big enough to prevent the turtle from swimming or eating. • There isn’t much humans can do because turtles are usually out of sight. • 80% of the affected turtles are Green Turtles. It is unknown why they get FP tumors more. • Tumors tend to form on the flipper, neck, organs, or near the mouth. • Turtles in Florida tend to get tumors in their liver. • In Hawaii, they tend to be around the turtles mouth.
Citation • “Dolphins.” Dolphins. N.p., n.d. web 10 Jan. 2014 <http://www.reefed.edu.au/home/explorer/animals/marine_vertebrates/marine_mammals/dolphins • “Circulatory System of a Dolphin.” 7hills-MrBerning. N.p., n.d. Web 10 Jan. 2014 <http://7hills-mrberning.wikispaces.com/DOLPHIN+Circulatory+System • http://www.bio.davidson.edu/Courses/anphys/2000/Pleasants/circ.htm • "Comparative Pathology of Nocardiosis in Marine Mammals." Comparative Pathology of Nocardiosis in Marine Mammals. N.p., n.d. Web. 10 Jan. 2014. <http://vet.sagepub.com/content/46/2/299