Bones (Bone Marrow)

Question 1

What type of tissue makes up bone marrow

Answer 1

A soft, connective tissue called Myeloid Tissue

Question 2

T/F: The bone marrow is the site for the production of blood cells

Answer 2

True

Question 3

Define hematopoesis

Answer 3

The production of blood cells

Question 4

Where can bone marrow be found

Answer 4

-Medullary cavities of long bones
- Spaces of spongy bone

Question 5

What two types of marrow are present in a person’s lifetime

Answer 5

• Red marrow
• Yellow marrow

Question 6

Where can red marrow be found in adults and what is its function

Answer 6

• Found: (Virtually ALL bones) skull, ribs, vertebrae bones, clavicle, sternum
• Function: Produce RBC’s, WBC’s, and Platelets

Question 7

How is yellow marrow created

Answer 7

As an individual ages, marrow cells become saturated with fat and are no longer active in blood cell production

Question 8

T/F: Once yellow marrow is created, it cannot convert back to red marrow

Answer 8

False; In extreme circumstances yellow can be converted to red (When RBC’s are needed to replenish loss)

Question 9

T/F: The skeletal system serves as a storehouse for 98% of the bodies calcium reserves

Answer 9

True

Question 10

T/F: Calcium moves in and out of the blood during bone remodeling

Answer 10

True

Question 11

How does calcium move during bone formation

Answer 11

Osteoblasts remove calcium from the blood and add it to the skeleton

Question 12

How does calcium move during bone breakdown

Answer 12

Osteoclasts release calcium into the blood stream and remove it from the skeleton

Question 13

Why is homeostasis of calcium ions essential (4 reasons)

Answer 13

• Bone formation/ remodeling
• Blood clotting
• Transmission of nerve impulses
• Maintenance of skeletal and cardiac muscle contraction

Question 14

What are the five white blood cells found in bone marrow

Answer 14

• Lymphocyte
• Monocyte
• Eosinophil
• Basophil
• Neutrophil