More to learn about marrow

[Guest guest]

Something I was not aware of before about yellow bone marrow and flat bones, and

am passing it on in case you didn't either.

" The bone marrow is found in the inside of bones. The marrow in the large bones

of adults produces blood cells. Approximately 4% of our total bodyweight

consists of bone marrow.

" There are two types of bone marrow:

1. Red marrow, made up mainly of myeloid tissue.

2. Yellow marrow, made up mostly of fat cells. Red marrow can be found in the

flat bones, such as the breast bone, skull, vertebrae, shoulder blades, hip bone

and ribs. Red marrow can also be found at the ends of long bones, such as the

humerus and femur.

" White blood cells (lymphocytes), red blood cells and platelets are produced in

the red marrow. Red blood cells carry oxygen, white blood cells fight diseases.

Platelets are essential for blood clotting. Yellow marrow can be found in the

inside of the middle section of long bones.

" If a person loses a lot of blood the body can convert yellow marrow to red

marrow in order to raise blood cell production.

" White blood cells, red blood cells and platelets exist in plasma - Blood plasma

is the liquid component of blood, in which the blood cells are suspended. "

http://www.medicalnewstoday.com/articles/142595.php

Continued:

What causes different leukemias?

" Experts say that different leukemias have different causes. The following are

either known causes, or strongly suspected causes:

a.. " Artificial ionizing radiation

b.. Viruses - HTLV-1 (human T-lymphotropic virus) and HIV (human

immunodeficiency virus)

c.. Benzene and some petrochemicals

d.. Alkylating chemotherapy agents used in previous cancers

e.. Maternal fetal transmission (rare)

f.. Hair dyes

g.. Genetic predisposition - some studies researching family history and

looking at twins have indicated that some people have a higher risk of

developing leukemia because of a single gene or multiple genes.

h..

i.. " Down syndrome - people with Down syndrome have a significantly higher

risk of developing leukemia, compared to people who do not have Down syndrome.

Experts say that because of this, people with certain chromosomal abnormalities

may have a higher risk.

j..

k.. " Electromagnetic energy - studies indicate there is not enough evidence to

show that ELF magnetic (not electric) fields that exist currently might cause

leukemia. The IARC (International Agency for Research on Cancer) says that

studies which indicate there is a risk tend to be biased and unreliable. "

FYI,

Lottie Duthu