Skeletal System Flashcards
The skeletal is made mostly of _____ at birth.
Cartilage
Name four purposes of the skeletal system
- give body shape
- produce blood cells
- support muscles and organs
- protect inner organs, body movement
What is the process known as cartilage hardening into bone?
Ossification
Soft areas on a baby’s skull are called ____.
Fontanels
What is the purpose of fontanels?
Allow baby to pass through birth canal (skull bones move)
which skeleton Provides support for vital organs and is made up of 80 bones
axial
what skeleton Form the frame of the body and enable movement, has 126 bones
appendicular
What is Periosteum?
outside bone layer
What does compact bone do?
Provides support
describe spongy bone
light and strong
describe bone marrow
blood cell productions begins here
Tough bands of tissue where bone meets bone
ligaments
Connective tissue where muscle meets bone
tendons
What helps bones glide smoothly across each other
synovial fluid
Name the four types of joints…
Hinge, ball and socket, pivot, ellipsoidal
Where are hinge joints located and what is their motion?
Elbows and knees, back and forth
Where are ball and socket joints located and what is their motion?
Hips and shoulders, rotation
Where are pivot joints located and what is their motion?
Elbows and neck, side to side
Where are ellipsoidal joints located and what is their motion?
Wrists and ankles, gliding motion
What exactly is a joint?
When two bones come together
What is scoliosis
Sideways curvature of the spine
what are two main functions of the skeletal system
support and shape
What is osteoporosis?
Thinning of the bones
What are the four types of fractures in bones?
Open, closed, simple, compound
What is a simple fracture?
One complete break of the bone
What is a compound fracture?
Two or more breaks in the bone
What is a closed fracture?
When the break is under the skin
What is an open fracture?
When the bone breaks through the skin
