Question

Yellow bone marrow is found especially in the medullar cavity of
(a)Spongy bones
(b)Long bones
(c)Short bones
(d)All of the above.

Answer 1

Hint: Yellow bone marrow contains mesenchymal stem cells (marrow stromal cells), which produce cartilage, fat and bone. Yellow bone marrow also aids within the storage of fats in cells called adipocytes. This helps the bone to function properly.

Complete answer:
There are two types of bone marrow, red bone marrow and yellow bone marrow. The redbone marrow is found mostly within the ribs, skull, vertebrae, and pelvic bones. It is also the main type of bone marrow found in children. It is red because this is often the sort of marrow that produces red blood cells.
Yellow marrow is found in the middle of long bones and during severe blood loss, this gets converted to haematopoietic red bone marrow.

Additional Information:

Red bone marrow	Yellow bone marrow
It is a mesh of networks which contains the developmental stages of RBC, WBC and megakaryocytes.	It contains fat and replaces the red bone marrow by yellow bone marrow during the adolescent period.
Occurs inside the spongy bones.	Occurs inside the compact bones.
Produces RBC, WBC, and platelets.	Produces fat cells, cartilages and bones.
Get its red colour due to the presence of haemoglobin in red blood cells.	Get its yellow colour due to carotenoids in the fat droplets.

So, the correct answer is,” Long bones “.

Note: -This type of bone marrow(yellow bone marrow) are often found within the medullary cavity within the shaft of long bones and is usually surrounded by a layer of red bone marrow. Yellow bone marrow contains mesenchymal stem cells (marrow stromal cells), which produce cartilage, fat and bone.
-Functions: Yellow bone marrow contains mesenchymal stem cells (marrow stromal cells), which produce cartilage, fat and bone. Yellow bone marrow also aids within the storage of fats in cells called adipocytes. This helps maintain the proper environment and provides the sustenance that bones get to function.