Soc 12 Flashcards
Protection for vital organs
Staying safe is important in sport and the skeleton play a key role. E.g, the skull protects the brain and the ribs protect the internal organs, including the heart.
Muscle attachtment
The muscles you use in sports need strong points to attach to and bones provide that framework. Muscles are attached to bones by tendons
What is the oder of the vertibrae
Cervical
Thoracic
Lumbar
Sacrum
Coccyx
Whats the name of the bone that protects the heart and lungs
Rib
What are the bones at the feet
Tarsals
Metatarsals
Phalanges
What is the names of the 2 bones in the forearm
Radius and ulna
What is the name of the bone that protects the brain
Cranium
What is the bone the protects the spinal cord
Vertebrae
What are the bones in the leg called
Tibia and fibula
What is flexion?
bending movement that decreases the angle between body parts
What is extension?
straightening movement that increases the angle between body parts
What is adduction
Movement that pulls towards the midline of body
What is rotation
Movement around a single axis
Hwhat is circumduction
Moving in a circular or conical shape
What is dorsi flexion?
Bending or flexing the toes up, closer to the shin
What is plantar flexion
Extending or pointing the toes down, away from the shin
What is a hinge joint
A hinge joint is a joint that allows only backward and forward motion - just like
the hinge on a door. There are three hinge joints: the knee, elbow and ankle.
What is a pivot join
Pivot joints allow bones to rotate. In a pivot joint, one bone shaped like a
cylinder rotates inside another bone or ligament that makes a ring round it. You have three pivot joints in your body: in your wrist, elbow and neck.
What is the ball and socket join
In a ball and socket joint, the rounded head of a long bone (the ball) fits into a cup-shaped hole (the socket). Both the hip and the shoulder joints
are ball and socket joints. With the hip, the long femur fits into the pelvis; with the shoulder, the long humerus fits into the scapula. In both the hip
and the shoulder the bones are covered with cartilage and reinforced with ligaments, but the shoulder joint has more freedom than the hip and is
capable of more variety and a bigger range of movement.
What is a condyloid joint
Acondyloid joint is similar to a ball and socket joint, but the ball rests against the end of a bone, rather than inside a socket. This allows circular motion.
What are 5 functions of the skeletal system
- Give us structure
2.protect organs - Protect muscles
- Movement
- Red and white blood cell production
Ligaments are
Elestic fibres that njoin one bone or another
Tendons are
Non elastic fibres that attach muscle to bone
What is glycogen
The stored form of carbohydrate
