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Immune System
This category is for questions about how our bodies identify and fight off disease, infection or pathogens through specialized cells, tissues and organs. The system that does this is called the immune system. It produces antibodies which recognize intruders and neutralizes potentially pathogenic organisms or substances.
4,548 Questions
What is a sentence for the word 'immune'?
She was not immune to the flu.
The immune system is part of the human anatomy.
How do infection-fighting cells manage to move around the body and get to the sites of infection?
they are carried around the body in the circulatory system
How do you increase your immune systems CD4 counts?
An abnormally low number of CD4+ T cells is a symptom of AIDS, the disease caused by HIV. Because HIV infects and kills CD4+ T cells, a person infected with HIV must use anti-viral treatments to suppress the virus and allow his CD4+ T cell population to renew.
What is the concept of care that affirms life and neither hastens or postpones death?
The concept is balanced diet for life sustainability.
Define whats pathogenic and non-pathogenic microorganisms characteristics?
pathogens transmit disease, non-pathogenic ones dont
Where do t-lymphocytes mature?
T lymphocytes undergo their final maturation in the thymus, hence why they are called 'T cells'.
A pathogen is an infectious agent that causes illness to the host. These are commonly attributed to be bacteria and viruses.
They can also be simple organisms, such as Naegleria fowleri [the uncommon brain eating ameoba]. Most pathogens are infectious microbes, such as bacteria or viruses, which are capable of causing disease. Other parasites, such as fungi and protozoans, are also considered pathogens. Because not all microbes are harmful, pathogens refer specifically to those that can cause disease or other harm.
All of the above
What do microorganisms need to live Do they need water moisture and light?
In order for a micro organism to thrive/survive these conditionsmustbe favorable:
-temperature, food, moisture, PH , and the oxygen (some need oxygen while others dislike it).
-most pathogens generally like a warm, dark environment .
Whilst this is a broad definition it contains some inaccuracies.
e.g. "the more acidic the better' is not true - Bacteria that live in the intestine below the stomach are in a quite strongly alkaline environment and even Helicobacter pylori which lives in the stomach buries into mucus where the pH is around 7. Most pathogenic bacteria enjoy mild pH's from 7 to around 4 at the lowest (found in hypoxic tissues).
the question is very broad - there are, in all liklihood, more species of micro-organism than there are individual vertebrates on the planet. Each prefers a different set of conditions.
If it is Pathogens (disease causing microorganisms) you are interested in then yes, they like conditions similar to those found in the human body. This usually includes a temperature of around 37 degrees centigrade and available iron, protein and sugar. They usually make their own water and do not need an outside source. They do not need light, the inside of your body has no light. Indeed, some are killed by it.
What would cause someone to throw up unintentionally after eating?
This can be identified as failure thrive. I went through this for years before I learned to cope. There are certain medicines out there that can increase appetite, or you can eat small things like crackers and jelly until you work out of your vomiting phase. Your belly is so used to throwing up that you need to relax it with calm foods and work up to heavier foods again. I'm so sorry that you can't eat correctly and I hope you get better soon.
1.) Immunology
2.) Immunologist
Phagocytes A type of white blood cell the "eats" dead cells, and other "debris" in the blood.
----------------------------- A phagocyte is a white blood cell that 'engulfs' not only dead cells and debris but also reacts against Pathogens (disease causing micro-organisms). There are different types of phagocytes e.g. Macrophages or Neutrophils.
The process where a Phagocyte 'disposes' of a pathogen is called phagocytosis, when a bacteria attaches to a phagocyte, using ligands, The phagocyte forms Pseudopods (cytoplasmic arms) that envelope the pathogen, the Psuedopodia then fuse, creating a membrane, enclosing the pathogen forming a phagosome, this moves deeper within the cell to then form with a lysosome forming a phagolysosome (not really imaginitive naming i know, but scientists aren't known for their imaginative naming ). the lysosome contains enzymes (you guessed it, lysozyme) the lysozyme destroys the bacterial cell walls allowing hydrolytic enzymes to digest the rest of the pathogen.
sources : Collins As Biology for AQA textbook
*** white blood cells that engulf and destroy pathogens***
white blood cells
What are side effects of tacrolimus?
There's a whole bunch of side-effects. It's probably best to read the patient info leaflet in a tacrolimus packet to find these out. (Sorry, I couldn't find a complete online version to link you to).
There are four major types of human pathogens: -Bacteria
-Viruses
-Fungi
-and Protists
