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:
Sneezing is a protective reflex, and is sometimes a sign of various medical condi- tions. Sneezing has been a remarkable sign throughout the history. In Asia and Europe, superstitions regarding sneezing extend through a wide range of races and countries, and it has an ominous significance. Although sneezing is a protective reflex response, little else is known about it.
Explanation:
Answer:
Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission.
Answer:
A single photon emission computed tomography (SPECT) scan is an imaging test that ---shows how blood flows to tissues and organs. It may be used to help diagnose seizures, stroke, stress fractures, infections, and tumors in the spine.---
Explanation:
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A patient has been diagnosed with angina. As he talks with the nurse, he asks several good questions about angina and seems able to concentrate on the explanations. He seems eager to learn how to manage his condition. What assessment can be made by the nurse <u>Hardiness</u>
<h3>What is
angina?</h3>
Chest pain or pressure, often known as angina or angina pectoris, is a sign of coronary heart disease and is typically brought on by insufficient blood flow to the heart muscle (myocardium).
A blockage or spasm of the arteries that feed blood to the heart muscle is typically the cause of angina. Anemia, abnormal cardiac rhythms, and heart failure are among additional factors. Atherosclerosis, a component of coronary artery disease, is the primary mechanism of coronary artery occlusion. The phrase means "a strangling feeling in the chest" and is derived from the Latin words angere ("to strangle") and pectus ("chest").
The degree of oxygen deprivation in the heart muscle and pain intensity are only weakly correlated.
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