Excretion
The body of a mammal has different ways to excrete waste and any other products not needed.
The way that a mammal does this is through the excretory system and just like all systems, there are main organs. In this system the main organs of excreting are the skin, the kidneys and the lungs.
The way that a mammal does this is through the excretory system and just like all systems, there are main organs. In this system the main organs of excreting are the skin, the kidneys and the lungs.
Homeostasis:
Homeostasis is a very important process of the body of a mammal. Homeostasis is the maintenance of a constant internal environment and involves a number of protocols done to manage the body. There are six different types of body levels need to be controlled such as :
Waste-
Right amount of-
With the help of the excretory system, these six aspects can help be monitored and controlled at a good amount.
Homeostasis is a very important process of the body of a mammal. Homeostasis is the maintenance of a constant internal environment and involves a number of protocols done to manage the body. There are six different types of body levels need to be controlled such as :
Waste-
- Removal of CO2
- Removal of Urea
Right amount of-
- Iron
- Water
- Sugar
- Temperature
With the help of the excretory system, these six aspects can help be monitored and controlled at a good amount.
Excretory System: Skin
Skin
The skin excretes waste by sweat. As you know, if you tasted your sweat, it would taste salty. This is because the body is excreting water and salt. Sweating is very important in controlling body temperature. When sweating, the water drips down the body and as wind blows it cools the body down. The body is feels cool afterwards because of the sodium content (salt). |
Excretory System: Kidneys
The kidneys are one of the most important parts of the excretory system. The kidneys are bean shaped parts of the body which are located at the back inside the rib cage
In circulation, blood passes the kidneys and any unwanted waste such as water, minerals and urea are filtered. The blood leaves and the waste forms urine. |
Urine is then funneled through into the bladder by two tube called the ureters. The urine is stored in the bladder until muscles decide that it can't be stored anymore - then the mammal is forced to urinate.
The circulatory system is also important in this as it helps to transfer the blood which is being filtered.
The circulatory system is also important in this as it helps to transfer the blood which is being filtered.
Excretory system: Lungs
The lungs are a main part of the excretory system as well as the respiration system. The lungs are not only used for getting oxygen into the blood, but also for getting things out of the body.
During the exchanging of gases, the lungs exchange oxygen and carbon dioxide. Carbon dioxide is taken out from the blood and brought out. Along with this CO2, some water vapour is also present in the excretion. The circulatory system is a very important part of this as it is sort of a transport for the blood ot travel around the body. |
What is excretion good for?
Controlling Body Temperature
While sweating, the body is actually controlling body temperature. A thing in the brain called the hypothalamus helps to detect the temperature of the body. Receptors in the hypothalamus controls when the skin should start sweating - helping the body to stay at a constant average temperature.
The hypothalamus, needed for excretion to know its queue, can tell the muscles to shiver - producing warmth for a cold body.
Excreting waste
The exchanging of gases helps to get rid of CO2 which is not necessary for the body. Sweating helps to control the amount of water in the body. The kidneys are used to remove unwanted urea and adjust the water content in blood. Kidneys can also justify the amount of red blood cells needed by send messages to the bone marrow.
While sweating, the body is actually controlling body temperature. A thing in the brain called the hypothalamus helps to detect the temperature of the body. Receptors in the hypothalamus controls when the skin should start sweating - helping the body to stay at a constant average temperature.
The hypothalamus, needed for excretion to know its queue, can tell the muscles to shiver - producing warmth for a cold body.
Excreting waste
The exchanging of gases helps to get rid of CO2 which is not necessary for the body. Sweating helps to control the amount of water in the body. The kidneys are used to remove unwanted urea and adjust the water content in blood. Kidneys can also justify the amount of red blood cells needed by send messages to the bone marrow.
Enlightenment on the skin
The body needs certain temperatures to work in certain ways. The skin helps to keep the body functioning by stabilizing this temperature. Here are methods on what your body does when at certain temperatures.
Cold
When the body is too cold, the hypothalamus tells the muscles to start moving (shivering) to increase metabolism and created heat. The hypothalamus may also tell the skin to tell the hair to stand up, tell the skin to not sweat and cut off blood supply to the skin - all to stay warm. This is why when you are cold, you turn blue due to the lack of blood supply.
Hot
When the body is too hot, the hypothalamus tells the skin to start producing sweat, tell hairs to stay flat and open up the blood supply to the skin - releasing body heat.
Cold
When the body is too cold, the hypothalamus tells the muscles to start moving (shivering) to increase metabolism and created heat. The hypothalamus may also tell the skin to tell the hair to stand up, tell the skin to not sweat and cut off blood supply to the skin - all to stay warm. This is why when you are cold, you turn blue due to the lack of blood supply.
Hot
When the body is too hot, the hypothalamus tells the skin to start producing sweat, tell hairs to stay flat and open up the blood supply to the skin - releasing body heat.
Specialized Cells
The Nephron cell is one of the most important cells in the kidneys. They are used for the main purpose of filtrating waste and any other unwanted substances from the urine.
The nephron contains tiny tubes called arterioles which lead blood into the kidney. The blood first enters through the renal corpuscle (where the glomerulus is located). In the glomerulus the blood does a circuit around, then leaves. Blood pressure is relied on to help the little filters in the bowman's capsule to remove unwanted substances and lead it into the Loop of Henle. As soon as it starts going up and down, leading into the collecting tube at the end, things are still being filtered. Any excess waste, urea and water from the blood is eventually collected into the collecting duct. or the renal pelvis and down into the ureter. Waste that is collected is made into urine and leads into the bladder where the organism will eventually urinate.
The nephron contains tiny tubes called arterioles which lead blood into the kidney. The blood first enters through the renal corpuscle (where the glomerulus is located). In the glomerulus the blood does a circuit around, then leaves. Blood pressure is relied on to help the little filters in the bowman's capsule to remove unwanted substances and lead it into the Loop of Henle. As soon as it starts going up and down, leading into the collecting tube at the end, things are still being filtered. Any excess waste, urea and water from the blood is eventually collected into the collecting duct. or the renal pelvis and down into the ureter. Waste that is collected is made into urine and leads into the bladder where the organism will eventually urinate.
Grizzly bear excretory
Though all mammals have an excretory system, they do not all excrete the same way. Similar to dogs, the grizzly bear does not have any sweat glands making the bear have the inability to sweat. Grizzly bears have their own way of control body temperature. If their brains detect high temperature around the body, grizzly bears use these methods to keep cool:
Blood vessels are located in the stomach just so that when they lie flat on the ground or in the water, the blood vessels can be cooled and the temperature of a grizzly bear can be kept at average.
There are also blood vessels in the tongue so that when the bear pants, wind can be caught, cooling the blood.
- Panting
- Submerging themselves in water
- Lying on the ground with stomach down on cool ground
Blood vessels are located in the stomach just so that when they lie flat on the ground or in the water, the blood vessels can be cooled and the temperature of a grizzly bear can be kept at average.
There are also blood vessels in the tongue so that when the bear pants, wind can be caught, cooling the blood.