Section 1: Skeletal System Introduction Flashcards
How many bones are in the human body?
206
How is the skeletal system divided into 2?
The axial and appendicular skeletons
What are the functions of the skeletal system? Give a little explanation for each function.
- Support. Large bones of the lower limbs act as pillars for the body trunk. Skeleton provides framework that anchors all organs.
- Protection. rib cage encloses the thoracic cavity and skull. Also protects the soft tissue of the nervous system, through vertebrae.
- Blood cell formation. Hematopoiesis occurs within the marrow cavaties of the bone.
- Storage. Fat is found on the inside of bones.
- Movement. Skeletal muscles use the bones as levers.
What function does the bone matrix serve?
A reserve for various minerals.
What is hematopoiesis?
The production and maturation of all blood cell types.
Which is more important for the protection of our internal organs? The axial and appendicular skeleton?
The axial skeleton. ex. protects the brain through the skull.
What are joints?
Where our bones meet
What is bone marrow? And what are the two types.
It is soft connective tissue. The two types are yellow and red marrow.
What is the function of yellow marrow?
It stores fat.
What is the function of red marrow?
Important for the production of red blood cells (hematopoisesis).
What happens when bone marrow is not properly producing red blood cells?
It results in sickness. This is known as Lukemia. People with this sickness are often known to need a healthy bone marrow transplant.
What does the axial skeleton make up?
Skull, robs, sternum, coloumn.
Think of the phrase, “turns on an axis”
What does the appendicular skeleton make up?
Makes up the rest of the bones in the body that is not part of the axial skeleton. Makes up the upper and lower limbs.
Think Appendage=appendicular
What are the types of bones?
Flat bones, long bones, short bones, sesamoid bones, irregular bones
