Skeleton and muscles Flashcards
Identify three functions of the skeleton
- Movement
- Protection
- Support
Explain using an example how the skeleton protects the body
Bone is rigid and tough so it can prevent damage to vital organs
eg the skull protects the brain
the ribs protect the heart and lungs
Explain using an example how the skeleton enables movement
Muscles are attached to the bones of the skeleton by tendons
When a muscle contracts it pull the bone into a different position, moving it
Muscles work in pairs around a joint
What is a joint?
Where two or more bones meet to allow movement
Explain how the antagonistic pair of muscles in the upper arm allow the arm to bend and straighten
- the biceps bend the arm
- the triceps straighten the arm
- When one contracts the other relaxes to allow the movement to happen
4
Describe the role of a tendon in movement
It is a fibrous slightly stretchy tissue which joins a muscle to a bone. When the muscle contracts the tendon pulls the bone causing movement.
How many bones are there in the human skeleton
206
Identify the bones in the arm
- Humerus
- Radius
- Ulna
Identify the bones in the leg
- femur
- patella (kneecap)
- tibia
- fibula
Identify the bones in the wrist and hand
Carpels -wrist
Metacarpels- palm
Phalanges - fingers
Identify the bones in the ankle and foot
Tarsals ankle
Metatarsals- foot
Phalanges - toes
Whats an easy way to remember the difference between tarsals and carpels
Tarsals are attached to the toes t to t so carpels must be the hands
Give another name for the skull
Cranium
Give another name for the jawbone
Mandible
Give another name for the collarbone
clavicle
