Lecture Final Section

Question 1

What are the two compartments of the spongey bone?

Answer 1

Vasculature and endosteal

Question 2

What is the trilaminar sinus wall?

Question 3

What is the function of the osteoblasts and are the formed elements?

Answer 3

The function of osteoblasts is to

Question 4

What is the vasculature pathway?

Answer 4

Periosteal arteries - sinusoidal capillary - drains out the central vein

Question 5

What does the lining of the sinus contain?

Answer 5

Endothelial cells and albuminals

Question 6

What are the other names for albuminals?

Answer 6

Adventitial cell, reticular cell, or fibroblast (it has fibers)

Question 7

Stroma

Answer 7

generally refers to the supportive framework or matrix within a biological structure, such as an organ or tissue

Question 8

What is the stroma of the bone marrow?

Answer 8

Supports tissue, sustains proliferation, scaffolding and support meshwork, cytokines, cells

Question 9

What are the three major stromal cell types in the marrow?

Answer 9

Macrophages, reticular cells, adipocytes

Question 10

Describe the function of macrophages(phagocytes) in the bone marrow

Answer 10

Mainly for recylcing RBCs that will never mature, rhopheocytosis

Question 11

Describe the function of albuminal reticular cells in the bone marrow

Answer 11

supports meshwork and isolates pathogens by the fibers, with the endothelial cells

Question 12

Describe the function of adipocytes in the bone marrow

Answer 12

produces cytokines and stem cells and monitors cell health, this is what we use to measure cellularity

Question 13

What stem cell are adipocytes from?

Answer 13

Mesenchymal stem cell which helps connective tissue and creates multipotential stromal cells: bone, cartilage, or fat cells

Question 14

What does it mean if adipocytes are inversely related to osteoblasts?

Question 15

What stem cells are osteoblasts from?

Question 16

Describe what osteoblasts look like

Answer 16

Looks like plasma cell except the golgo apparatus looks detached from the nucleus membrane

Question 17

Osteoclasts

Answer 17

they reabsorb and modify the bone meaning and it is multinucleated

Question 18

Describe mast cells

Answer 18

well first they have their own stem cell and you can find it in bone marrow, tissue, and body fluids.

Question 19

What are the similarities between mast cells and basophils?

Answer 19

Mediates inflammatory responses, and are a release for chemotactic substances