how long is 6 kilometers
The shortest answer is that a klick equals one kilomete...
Spongy and compact bones are two basic structural bone types. They make up the long bones in the body. Long bones are dense hard bones that provide strength, structure and mobility.
Spongy vs Compact Bones.
|Spongy Bones||Compact Bones|
|They fill the inner layer of most bones||They fill the outer layer of most bones|
At birth, all bone marrow is red. With age, more and more of it is converted to the yellow type. Adults have on average about 2.6kg (5.7lbs) of bone marrow, with about half of it being red.
Bone marrow produces many types of white blood cells. These are necessary for a healthy immune system. They prevent and fight infections. The main types of white blood cells, or leukocytes, are as follows.
While red bone marrow is rich with hematopoietic cells that function to produce red blood cells, white blood cells, and platelets, the yellow bone marrow instead stores the adipocytes that function as fat storage.
Stem cells in the red bone marrow are called hemocytoblasts. They give rise to all of the formed elements in blood. If a stem cell commits to becoming a cell called a proerythroblast, it will develop into a new red blood cell. The formation of a red blood cell takes about 2 days.
Blood cells are made in the bone marrow. The bone marrow is the soft, spongy material in the center of the bones.
The HSCs differentiate into white blood cells, red blood cells, and 1 platelets . Over time, some of the red bone marrow in the body eventually changes into yellow bone marrow, which contains mesenchymal stem cells (MSCs) and accumulates fat over time  .
Bones are also differentiated based on their structure and functions. … Both compact bone and spongy bone are parts of the bone tissue. Compact bones are the hard exterior, while spongy bones are the porous interior structures of bone tissue.
Compact bone has more bone matrix and less space due to osteons. Spongy bones have less bone matrix and more space due to trabeculae.
Within certain bones, a connective tissue called red bone marrow produces red blood cells, white blood cells, and platelets, a process called hemopoiesis.
Compact bone and spongy bone: The hard outer layer of bones is composed of compact bone tissue, so-called due to its minimal gaps and spaces. Its porosity is 5–30%. Inside the interior of the bone is the trabecular bone tissue, an open cell, porous network that is also called cancellous or spongy bone.