Skeleton System Intro Flashcards
(20 cards)
How many bones does the average human adult has?
206
How many bones do babies have?
270
64 soft bones will fuse as they age.
Name 4 functions of the skeletal system
- Aid in movement of the body
- Support & Protect internal organs
- Produce red & white blood cells
- Provide a storehouse for minerals
ASPP
What are 2 main parts of the skeleton?
Axial & appendicular
How many bones are in the axial skeleton?
80
How many bones are in the appendicular skeleton?
126
64 upper + 62 lower
What are the 5 types of bones?
- Long bone
- Short bone
- Flat bone
- Irregular bone
- Sesamoid bone
What is one function of long bone?
Aid in growth
What is the end of a long bone called?
Epiphysis
What is the fibrous tissue that covers long bone?
Perosteum
What is the shaft of a long bone called?
Diaphysis
What are the primary functions of a short bone?
- Provide support & stability
What is short bone consist of?
Cancellous bone & large amt. of bone marrow
Cancellous bone are spongy.
What is the main function of flat bone?
- Provide protection to body organs & base for muscular attachment.
In adult, the highest # of RBCs are formed in:
Flat bone
Sesamoid bones are:
imbedded in a tendon
What is the primary purpose of sesamoid bone?
Protect the tendon
What is a bone cell called?
Osteocyte
What are bone collagen?
fibrous protein materials that give bones hardness & durability
What is the process of bone formation called?
Ossification