External Anatomy Questions:
Rats can live anywhere for the most part but they prefer dark that have vegetation such as grass and vegetables. They can live in warm and cold climates, as well in big cities that do not have any features like the wild.
Rats are omnivores that will eat almost anything. Rats that live in forests and in the wild eat seeds, nuts and insects as well as garden vegetables. Rats that live in urban areas eat scraps and compost that were thrown out.
Rats are mammels. This means that when they are pregnant, the baby is held inside the female until it is born. The rat's will then raise the young until they are ready to be on their own.
A rat's heart has four chambers and each chamber preforms the safe action as the ones in a human heart. A rat also has a digestive system similar to a human's, including both a large and small intestine, and a stomach that helps get nutrients from consumed food. One other similarity between the two is that they both have two kidneys. All of the internal parts of the rat were placed almost exactly in the same spot that you might find a humans internal parts.
A rat's foot structure can be useful because they have five fingers that can grip things very easily because the length of the nails and that liitle balls on the bottom of the feet. Another thing is that a rat's foot can spread out very wide and cover more area on very tought surfaces.
Cardiovascular System Questions:
A rat's heart has four chambers: a left and right ventricle, and also a left and right atrium.
A rat's circulatory is closed, meaning that all of its blood is always contained in some sort of veins or arteries throughout the body. The blood is also pumped by the heart and is mixed with oxygen that comes from the lungs.
Respitory System Questions:
The rat has four lobes located in the right lung but only one lobe in the lung of the rat.
The purpose of having blood flowing through the body is to carry the oxygen that is transferred into the blood stream from the alveoli to the entire body and its organs. Without this blood flow and oxygen, the body would not be able to function. It also helps fight off disease because it carries white blood cells and gets rid of waste. White blood cells are the bodies disease fighters. The blood also gets rid of waste by carrying the carbon dioxide back to the lungs, then the lungs exhale it.
Post-Dissection Questions
External Anatomy Questions:
The difference between a male rat and female rat is that a male rat has a scrotum that is very noticeable on the tail end of the rat. The female rats have no scrotum but instead have a vagina, which almost resembles the male rat urogenital opening.
Wiskers can feel where the rat is. The tail of the rat keeps it balanced when it walks. Foot Pads sense what the rat is walking on and where it is. Ears: rats have very sensitive ears. They can pick up sounds like ultrasounds and frequencies higher than human hearing.
The rat lives in small or closed structures or spend alot of time under ground. They might live in the sewer or an under ground tunnel. Their ears also help them pick up sound far away which also suggests that the live under ground.
The rat has four legs, two on the front, and two in the back. The rat also has a tail. The rat uses its four legs to wealk and run, just like a dog or any four legged animal would do. It uses its tail to balance itself if it is climbing or standing on a ledge.
Cardiovascular System Questions:
The four chambers of the heart are the right ventricle, the left ventricle, the left atrium, and the right atrium.
In the rat's heart, the ventricles are larger than the atria. They are bigger because they pump the blood either to the body, or to the lungs. The atria are smaller becassue they only pump the blood into the ventircles, which is right next to them.
As the veins and arteries get further from the heart, their diameter decreases. This is becasue the bllod flowing through them is not under the pressure that it was at when it first left the heart. Therefore, the veins and arteries can be smaller becasue they dont need to hold as much pressure,
Respitory System Questions
The air passes through the rat's nares, or nostrils. It then leads down to the pharynx, better known as the throat. The air passes through the larynx and heads down the trachea to the left and right bronchi. It then goes through the bronchi tree to alveoli, or small grape structures and the end of the bronchi tree, and are gas exchanged between the capillaries and alveoli.
When the rat breaths in the air goes into the bronchi tree and into the alveoli where the oxygen is exchanged with the CO2 into the blood. The oxygen goes in the blood and the CO2 gas is released as well as the water is out of the rats body like a human would do.
When the diaphragm contracts there is more space for the lungs to expand so whe the rat takes a breath it can put more air in its lungs.
External Anatomy Questions:
Rats can live anywhere for the most part but they prefer dark that have vegetation such as grass and vegetables. They can live in warm and cold climates, as well in big cities that do not have any features like the wild.
Rats are omnivores that will eat almost anything. Rats that live in forests and in the wild eat seeds, nuts and insects as well as garden vegetables. Rats that live in urban areas eat scraps and compost that were thrown out.
Rats are mammels. This means that when they are pregnant, the baby is held inside the female until it is born. The rat's will then raise the young until they are ready to be on their own.
A rat's heart has four chambers and each chamber preforms the safe action as the ones in a human heart. A rat also has a digestive system similar to a human's, including both a large and small intestine, and a stomach that helps get nutrients from consumed food. One other similarity between the two is that they both have two kidneys. All of the internal parts of the rat were placed almost exactly in the same spot that you might find a humans internal parts.
A rat's foot structure can be useful because they have five fingers that can grip things very easily because the length of the nails and that liitle balls on the bottom of the feet. Another thing is that a rat's foot can spread out very wide and cover more area on very tought surfaces.
Cardiovascular System Questions:
A rat's heart has four chambers: a left and right ventricle, and also a left and right atrium.
A rat's circulatory is closed, meaning that all of its blood is always contained in some sort of veins or arteries throughout the body. The blood is also pumped by the heart and is mixed with oxygen that comes from the lungs.
Respitory System Questions:
The rat has four lobes located in the right lung but only one lobe in the lung of the rat.
The purpose of having blood flowing through the body is to carry the oxygen that is transferred into the blood stream from the alveoli to the entire body and its organs. Without this blood flow and oxygen, the body would not be able to function. It also helps fight off disease because it carries white blood cells and gets rid of waste. White blood cells are the bodies disease fighters. The blood also gets rid of waste by carrying the carbon dioxide back to the lungs, then the lungs exhale it.
Post-Dissection Questions
External Anatomy Questions:
The difference between a male rat and female rat is that a male rat has a scrotum that is very noticeable on the tail end of the rat. The female rats have no scrotum but instead have a vagina, which almost resembles the male rat urogenital opening.
Wiskers can feel where the rat is. The tail of the rat keeps it balanced when it walks. Foot Pads sense what the rat is walking on and where it is. Ears: rats have very sensitive ears. They can pick up sounds like ultrasounds and frequencies higher than human hearing.
The rat lives in small or closed structures or spend alot of time under ground. They might live in the sewer or an under ground tunnel. Their ears also help them pick up sound far away which also suggests that the live under ground.
The rat has four legs, two on the front, and two in the back. The rat also has a tail. The rat uses its four legs to wealk and run, just like a dog or any four legged animal would do. It uses its tail to balance itself if it is climbing or standing on a ledge.
Cardiovascular System Questions:
The four chambers of the heart are the right ventricle, the left ventricle, the left atrium, and the right atrium.
In the rat's heart, the ventricles are larger than the atria. They are bigger because they pump the blood either to the body, or to the lungs. The atria are smaller becassue they only pump the blood into the ventircles, which is right next to them.
As the veins and arteries get further from the heart, their diameter decreases. This is becasue the bllod flowing through them is not under the pressure that it was at when it first left the heart. Therefore, the veins and arteries can be smaller becasue they dont need to hold as much pressure,
Respitory System Questions
The air passes through the rat's nares, or nostrils. It then leads down to the pharynx, better known as the throat. The air passes through the larynx and heads down the trachea to the left and right bronchi. It then goes through the bronchi tree to alveoli, or small grape structures and the end of the bronchi tree, and are gas exchanged between the capillaries and alveoli.
When the rat breaths in the air goes into the bronchi tree and into the alveoli where the oxygen is exchanged with the CO2 into the blood. The oxygen goes in the blood and the CO2 gas is released as well as the water is out of the rats body like a human would do.
When the diaphragm contracts there is more space for the lungs to expand so whe the rat takes a breath it can put more air in its lungs.