physical education test October COPY Flashcards
ligaments
Bands of connective tissue that connect bone to bone and stabilise movement
cartilage
Designed to reduce friction and act as a shock absorber for the joint
synovial fluid
Acts like an oil and lubricates the joint
tendons
connective tissue that attaches muscle to bone
flexion
flexion is a decrease in the angle around a joint
Example of tendon
Achilles tendon
extension
When the angle of the bones that are moving (articulating bones) is increased.
Types of joints
Hinge joint
Ball and socket joint
Sporting example of hinge joint
Bicep curls in weight training
Articulating bones of hinge joint (bicep curls in weight training)
humerus, ulna, radius
Sporting example of ball and socket joint
throwing ball
Rotation
Rotation is when the bone turns about its longitudinal axis within the joint. Rotation towards the body is called internal or medical rotation, rotation away from the body is external or lateral rotation.
Abduction
Abduction is the movement of the body away from the midline of the body.
Adduction
Adduction is the movement towards the midline of the body
Label this skeleton
Circumduction
Circumduction is the movement of a body region in a circular manner.
Articulating bones
Articulating bones: the bones that move within a joint
What are the main functions of the skeletal system?
- Support
- Posture
- Protection
- Movement
- Blood cell production
- Storage of minerals
Support:
Skeleton keeps body upright and provides framework for muscle and tissue attachment.
Posture:
Skeleton gives correct shape for our body
Protection:
Bones of skeleton protects internal organs and reduce risk of injury on impact.
Example of protection in skeletal system (cranium):
Protects the brain
Example of protection in skeletal system (ribs):
Protects hearts and lungs