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The Leapord Gecko!
Transcript of The Leapord Gecko!
They both get air by the help of another body part
The Leopard Gecko!
The lung is a part of the body whih every land animal has, it functions to transfer oxygen from the air into the blood, and geting rid of the CO2 left over.
The heart pumps blood which is oxygenated and deoxygenated blood mixed together which is pumped to the rest of the body. Unlike the rat's heart which only delivers oxgenated blood.
the Evolution of the Heart of a Leopard Gecko
The heart of a gecko and a rat is different.The heart of the gecko which had 3 chambers and the heart in a rat has 4 chambers. The gecko has 2 atrium and 1 ventricle,the rat has 2 atrium and 2 ventricles. The rat heart evolved because a “new genetic regulatory elements” evolved and told the Tbx5 gene to make a wall or boundary in the heart. This resulted in 2 ventricles in a rat. The gecko did not have new genetic regulatory elements. Therefore the gecko heart did not evolve. This happened over a period of time and the rat started to have a somewhat 2 ventricle heart while the rats which had almost no 2 ventricle heart died. That is how the rat heart evolved to have a 2 ventricle heart meaning a 4 chamber heart. Which means having warm-blood and being more active than reptilians.
A.Mammals/Birds B. Turtles/Snakes C. Crocodiles
How The Stomach evolved
The reason the difference between the mammal stomach and reptile stomach is so significant is the overall lifestyle of the mammals changed when they separated from reptiles.
The first mammals we know of were very small and more than likely scavengers. Scavenging takes a lot of time and mobility so mammals such as rats that are also scavengers needed big, space efficient stomachs. Reptiles like leopard geckos don't need that big stomachs because
This new stomach helped mammals survive through a massive change in diet and the way they live by making the shape of the stomach more efficient for their needs
The skeleton of the leopard gecko most likely a branched of descendent of the Casineria, the oldest known amphibian. As you can see in the illustration, the Casineria is very similar, if not a bit larger than the Leopard Gecko. My theory is that the gecko was a variation with a different diet. This diet could only be found in swampy places. To adapt to the environment, the gecko had to become smaller and devlop a thicker, smaller tail for swimming.
Larger and thicker than the gecko's and gets larger at the end,
Smaller and longer than the rat's, and more straight
Very noticeably curved spine and movable tail
Smaller at the base of the neck than at the base of the tail
Very long, extends to a straight, uncurving tail
Tiny and thinner as well as longer
The neck is just a diagnal line of bone
Leading to the end of the tail
Small almost sharp extensions of each individual bone
warmblooded(Can produce own b
4 chambered heart
coldblooded(can't produce own body heat)
3 chambered heart
Similarities and Diferences
The lungs of a rat contracts air by the squeezing of the diaphragm, a muscle under the lungs assisting in getting air.
Stomach is sack shaped
The stomach is tube like
Both stomachs have the same function
The lungs of a leopard gecko contract air by the squeezing of its ribs. The leopard gecko walks in a way that it turns is body, squeezing the lungs throught the turning of the ribs.
WHat Is the stomach?
The stomach is the organ that breaks down food and sends it off to the intestines
Evolution of a leopard gecko
Bohn, Dieter. "The Verge Review of Animals: the leopard gecko." The Verge. Vox
Media, 22 Nov. 2015. Web. 13 Dec. 2015. <http://www.theverge.com/2015/11/
The leopard gecko evolved its lungs to be long and thin because it helps with the way it walks/runs. Natural selection happened because if the lungs of a leopard gecko were big then it would impare there movement and it would make it harder for them to hunt / run away from pray. Making them die of an not survive as a race, but after the lungs got thiner because of changed in reproduction they survived.
"Gecko." Wiki. Tangient, 2015. Web. 13 Dec. 2015. <https://snowbio.wikispaces.com/Gecko+(reptile)>.
"Vertebrate Lungs." Kimball's Biology Pages. John W. Kimball, 24 Jan. 2010. Web. 13 Dec. 2015. <http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/V/VertebrateLungs.html>.
Wikipedia. Wikimedia Foundation, 3 Dec. 2015. Web. 13 Dec. 2015.
Wikipedia. Wikimedia Foundation, 3 Dec. 2015. Web. 13 Dec. 2015.
"Casineria." Wikipedia. Wikimedia Foundation, 10 Aug. 2015. Web. 13 Dec. 2015.
Science Channel. Mammals Vs. Dinos- Oldest Mammal Fossil. Youtube. N.p., 15 Oct.
2008. Web. 13 Dec. 2015. <https://www.youtube.com/
The rat is not a very different variation from the first known mammal, Adelobasileus. My theory is that the rat is just a variation of the Adelobasileus that needed to survive in grasslands, that's why the the rat's body and skeleton is closer the the ground.
The spine is a long series of small bones leading from the base of your neck to the tip of your tail bone. The function of the spine is to protect and house the spinal cord (which gives function to the entire body) as well provides support to the body. The spinal column aka the vertebrae is found in all mammals, reptiles, and most fish. The term "invertebrae is given to an animal that doesn't have a spine. This could be many animals including starfish, coral, and sea cucumbers. There are several names for the spine such as: spine, spinal column vertebrae, backbone, etc. Both animals we picked are vertebraes and have many similarities and differences.
"Gecko." Wiki. Tangient, 2015. Web. 13 Dec. 2015. <https://snowbio.wikispaces.com/Gecko+(reptile)>
"Leopard Gecko Heart." Flickr. Yahoo, 13 Apr. 2010. Web. 14 Dec. 2015. <https://www.flickr.com/photos/olatheanimalhospital/4566835980>.
Wermuth, Heinz Fritz. "Crocodile - Reptile." Britannica. N.p.: n.p., n.d.
"Lizard." Universe-review. N.p., n.d. Web. 14 Dec. 2015.
Team, Ben. "Circulatory System of Geckos." Ed. Derm Media.