Bone Tissue Functions
Explain how bone tissue performs the function of PROTECTION.
PROTECTION: Shields vital organs like the brain and heart.
Where ia extracellular matrix (ECM) found?
The SPACES in between the bone cells are filled with a substance called extracellular matrix (ECM).
What is another name for a Haversian System?
Osteon
What is osteoporosis?
Osteoporosis: Loss of bone mass and mineral density makes bones fragile and prone to fractures.
The prefix “osteo-” means what?
bone
One of the functions of bone tissue is SUPPORT. What is supported?
Creates a structural framework for soft tissues.
What do Osteoblasts do?
Osteoblasts: These cells build and repair bone.
What is the name of the main tubular shaft of a long bone?
Diaphysis: The main tubular shaft of a long bone.
What is osteomyelitis?
Osteomyelitis: Bacterial or fungal infection inside the bone leading to inflammation and pain.
Hemo- a prefix derived from the Greek word “haima”, meaning what?
blood
Explain the function of HEMOPOIESIS:
HEMOPOIESIS: Red bone marrow acts as the primary site for blood cell production.
What do Osteoclasts do?
Osteoclasts: Large, multinucleated cells derived from white blood cell lineages that crush apart and dissolve bone matrix through acid and enzyme secretion.
What is the name of the canal that is a microscopic, hollow tube in the center of an osteon (Haversian System) within compact bone?
HAVERSIAN canal: is a microscopic, hollow tube in the center of an osteon (Haversian System) within compact bone.
What is osteonecrosis?
Osteonecrosis: Loss of blood supply that causes bone tissue to die.
Your entire skeleton gets a makeover; about 10% of your bone tissue is replaced every _?_.
year
Explain how the function of ENERGY STORAGE works.
ENERGY STORAGE: Holds yellow bone marrow, which stores fat (triglycerides) for energy.
What do Osteogenic cells do?
Osteogenic cells: Are unspecialized stem cells that develop into osteoblasts.
Where is spongy bone found?
Spongy Bone: The porous, lightweight INNER layer of a long shaft.
Describe FIBROUS DYSPLASIA.
Fibrous Dysplasia is a disorder that occurs when abnormal fibrous scar-like tissue replaces healthy bone.
Bone tissue is a living, growing tissue that is stronger ounce-for-ounce than what?
steel
List at least 2 minerals stored in bone tissue.
MINERAL STORAGE: calcium, phosphorus, magnesium, sodium, and potassium.
What do osteogenic cells do that other bone cells do not do?
Osteogenic cells are unspecialized stem cells, that DIVIDE THROUGH MITOSIS.
What is the Medullary Cavity?
MEDULLARY CAVITY is the central hollow space inside the shaft filled with bone marrow.
Explain Wolff’s Law.
WOLFF'S LAW: Bone tissue grows and remodels itself in direct response to the mechanical forces and physical stresses placed upon it.
What doe the word "Poiesis: mean?
Poiesis, from the Greek word “poiein”. Means the process of creating something that did not exist before.