Answer:
Kupffer cells, also known as stellate macrophages due to their particular structure while viewed under a microscope, were first identified by scientist Karl Wilhelm von Kupffer, after whom the cells were named, in 1876.
These cells, whose origin is in the yolk sack during fetal development, later on move to the liver where they will stay and further differentiate into their mature versions.
These cells are part of the liver cells, and are found particularly on the walls of the sinusoids, where they perform their two most important tasks. First, these cells are part of the immune system, as they are essentially macrophages. However, their role is pretty unique, as they are responsible not just for phagocytosis of invading bacteria, and other pathogens, and initiating immune responses, but also, this cell plays a role in decomposing red blood cells who are dying, and taking up the hemoglobin from them to further break that into reusable globin, and the heme group, from which iron is further extracted to be re-used and also to create bilirrubin, a part of bile.
Finally, these cells have been found to be connected to hepatic cirrhosis, as in their process of detoxifying ethanol, they produce toxins that force the liver cells to produce collagen, and thus to become fibrous.
Answer:
2.1 liter.
Explanation:
Homeostasis may be defined as the phenomena of the maintenance of the internal environment of the body irrespective of the change in the external or internal environment.
The water consumption is important for the body as the human's body consists of more than 60% water.
The water consumption can be calculated as follows:
Water consumption = water loss - water produced.
Water loss from exercise = 2000 ml = 2 liter, 300 ml was lost during from metabolism = 0.3 liter.
The water produced = 200 ml = 0.2 liter.
The water consumption = 2 L + 0.3 L - 0.2 L
Total water consumption done by the body = 2.1 liter.
Thus, the answer is 2.1 liter.
Answer:
The tonsils are part of the body's immune system. Because of their location at the throat and palate, they can stop germs entering the body through the mouth or the nose. The tonsils also contain a lot of white blood cells, which are responsible for killing germs.
Explanation:
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Answer:
The previous sentence is false.
Explanation:
The tricuspid valve is between the right atrium and right ventricle. Also,The valve which is under the most pressure to block blacflow of blood during ventricular systole is the mitral valve. Mitral valve is the one which is located between the left atrium and left ventricle.
The heart works with two processes: diastole and systole. Systole occurs when the heart contract himself to expulse blood to the vessels, and when the heart relaxes while it fulfills of blood is called diastole. During the systole process the tricuspid valve needs to be closed to allow the increase of pressures inside the heart cameras and then allow the expulse of blood. But, during diastole, tricuspid valve needs to be open to allow the correct filling of right side of the heart.
A nursing mother needs at least 330 to 400 kilocalories a day to receive all the nutrients required for successful lactation.
<h3>What is lactation?</h3>
Lactation is defined as a process in which mother feeds her own milk to her baby as the milk of mother contain all essential requirements that is beneficial for the growth of the baby. Atleast 330 to 400 kilocalories a day to receive all the nutrients required for successful lactation.
During the first trimester there is no need of extra calorie, during second trimester extra calorie is required and total amount is 340 calories per day suggested by doctor. In case of third trimester the requirement of calorie increases and 450 calories is required in a single day.
Therefore, a nursing mother needs at least 330 to 400 kilocalories a day to receive all the nutrients required for successful lactation.
Learn more about lactation here:
brainly.com/question/17052106
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