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Lymphatic System
This category is for questions about the various vessels by which lymph, a watery fluid of leukocytes, circulates through the body, providing transportation for some materials and removing particulate from tissues.
1,658 Questions
Alpha globulin
Why does the lack of B cells cause an immune system to be defective?
The lack of B cells is known as an Inherited immunodeficiency diseases and usually means you will have to be kept away from sick people till the B cell matures.
Does crystal meth weaken immune system?
some studies have revealed that it does weaken the immune system
AIDS
What does it mean when you feel your stomach flutter could it be a muscle or tape worm?
its most likely a trapped nerve. i get this every now and again too and im pretty sure i dont have worms.
Where is the immune system in the body?
The immune system of the human body is located throughout the body. It has to do with our thyroid, and adrenal glands. The white blood cells we have are perhaps the most important aspect for fighting off illness.
erythrocytes
What would most likely elicit a response from the immune system?
Infections, cancer, foreign bodies, sometimes itself.
How does the body's immune system defend against invaders?
The immune system protects the body from infection by creating a barrier that prevents viruses and bacteria from entering the body. If the virus and bacteria enters the body, the immune system detects and eliminates them before they can reproduce.
How does the immune system protect your body?
Short Answer:
The immune system senses foreign cells in the body and destroys them.
Long Answer:
Destroying, say, the common cold, begins when an antibody marks one common cold cell. It does this by attaching to the membrane. Another immune system cell, the nature killer cell (yes, THAT is its professional name), will kill this cell, but basically take pieces of that cell and add it to its membrane (kind of how in a video game you take the sword of the villain you just defeated as a trophy)
The natural killer cell will then wander over to another immune cell, known as the helper T-cell.
The helper T-cell
sees the pieces of the foreign cell and freaks out (this process is call antigen recognition). The T-cell
is now considered "activated" and begins to replicate and differentiate itself.
As all this is happening, and T-cell
that runs into a B-cell
(another immune cell) activates it. The B-cell
also begins to replicate and differentiate itself. One of the B-cell
types created then release antibodies that will bind to the foreign invader (the common cold, in this case) to mark it as an enemy.
The antibodies
go out and mark the invader, and natural killer cells, and cytotoxic T-cells
will go and destroy the infection and start the process over again until the invader has been eliminated.
This is still a brief summary of what occurs in a immune system response, but I hope it helps.
How do helper T cells first become part of the immune system response to invasion by a virus?
T helper cells (CD4 T cells) serve to guide the development of adaptive (acquired) immune responses. Once they are activated and instructed by cells of the innate (natural) immune system, they "help" to activate cytotoxic (CD8) T cells and B cells (antibody producers). In the case of viruses T helper cells, once polarized, will produce signaling molecules (such as IL-2) that alert the CD8 T cells to the infection and will help activate B cells and will instruct them as to which flavor or antibody is best to produce. The CD4 T cells will also release other signaling proteins (such as Interferons) that help get rid of the virus.
Do doctors diagnose swollen lymph nodes as an infectious disease?
Swollen lymph nodes would be a symptom of a disease rather than the disease itself.
Does the immune system often kills cancerous cells?
Yes, most of the time the immune system weeds out cells that are abnormal.
What is the job of the immune system?
to prevent harmful things from getting into the body such as viruses and bacteria. it also fights off disease abd whatnot.
What is lymph and what are their function?
Lymph is the fluid present within the vessels of the lymphatic system. It consists of the fluid that bathes the tissues, which is derived from the blood and is drained by the lymphatic vessels.
FUNCTIONS:
1-It return the proteins from tissue spaces into blood.
2-It plays an important role in redistribution of fluid in the body.
3-bacteria, toxins and other foreign bodies are removed from tissues through lymph.
4-It is flow is responsible for the maintenance of structural and functional integrity of tissues.
5-It serves as an important route for intestinal fat absorption.
6-It plays an important role in immunity by transport of lymphocytes.
Which animal has the worst immune system?
Sharks have the best immune systems. Studies show that they resist every disease, even cancer.
