1.1 Musculoskelular System Flashcards
Articulating bones
Where 2 or more bones meet at a joint.
Joint
A connection point between 2 bones where movement occurs.
Abduction
Movement away from the middle of the body- such as the shoulder.
Adduction
Movement towards the midline of the body- such as at the shoulder.
Flexion
Decreasing the angle of bones at a joint.
Extension
Increasing the angle of bones at a joint.
Plantar flexion
Pointing the toes at the ankle/ increasing the ankle angle.
Rotation
Movement around an axis- such as at the shoulder.
Head/neck
Cranium and vertebrae
Shoulder
Scapula and humerus
Chest
Ribs and sternum
Elbow
Humerus, radius and ulna
Hip
Pelvis and femur
Knee
Femur and tibia (patella sits in front of the knee joint)
Ankle
Tibia, fibula and talus
Short bones enable
Finer controlled movements
Long bones enable
Gross movements
Flat bones are for
The protection of vital organs
Skeleton provides a
Point of attachment for muscles
ROM
Is the measurement of the amount of movement around a specific joint or body part
7 functions of the skeleton:
Movement
Protection
Attachment
Storage of minerals
Support
Shape
Production of blood cells
Storage of minerals
Minerals can be released from bone to ensure essential chemical reactions, bones store 90% of calcium as well as minerals in the bone marrow.
Shape
Slight skeletal differences determine favoured sport
Extension
Where the angle between 2 bones increases
Circumduction
Movement up, down, forwards and backwards
Dorsi flexion
Movement where toes are pulled towards the knee (ankle only)
Ligaments
Bands of fibres that are attached to the bones and link the joints together.
Remain under tension so bones stay pulled towards each other.
Ligaments
Bands of fibres that are attached to the bones and link the joints together.
Remain under tension so bones stay pulled towards each other.
Tendons
Very strong cords that join the muscle to the bone.
Agonist
Muscle or group of muscles responsible for movement.
Antagonists
Muscles that act to produce the opposite movement to the agonist. They work in antagonistic pairs.
Eccentric contractionL
Lengthening of the muscle
Concentric contraction
Shortening of the muscle
Bursae
Sacks of fluid which reduce friction
Cartilage
Tough but flexible smooth elastic tissue which prevents friction and stops bones from rubbing together.
Joint capsules
Encloses/ supports
Synovial fluid
Produces lubrication
Synovial joint
An area of the body where 2 or more bones meet (articulate) to allow a range of movements.
Synovial membrane
Secretes synovial fluid
Chest muscle
Pectoral
Arm muscle front
Bicep
Stomach muscles
Abdominals
Hip muscles front
Hip flexors
Thigh muscles front
Quadriceps
Shin muscle front
Tibial is anterior
Shoulder muscles back
Rotator cuffs
Back muscle
Latissimus dorsi
Upper arm muscle/shoulder back
Deltoid
Upper arm muscle back
Tricep
Buttocks muscles
Gluteals
Upper leg back
Hamstrings
Calf muscle
Gastrocnemius
Shoulder muscles
Pectorals and latissimus dorsi
Elbow muscles
Biceps and triceps
Hip muscles
Hip flexor and gluteus maximus
Knee muscles
Hamstrings and quads
Ankle muscles
Tibialis anterior and gastrocnemius