Skeletal system Flashcards
Name all 20 bones in the body.
- Cranium
- Clavicle
- Sternum
- Ribs
- Humerus
- Verterbrae
- Radius
- Ulna
- Carpals
- Metacarpals
- Pelvis
- Femur
- Patella
- Tibia
- Fibia
- Tarsals
- Talus
- Metatarsals
- Phalanges
What does ‘anterior’ mean?
To the front of
What does ‘posterior’ mean?
To the rear of
What does ‘medial’ mean?
Towards the midline
What does ‘lateral’ mean?
Away from the midline
What does ‘proximal’ mean?
Closest to
What does ‘distal’ mean?
Furthest away
What does ‘superior’ mean?
Above
What does ‘inferior’ mean?
Below
What are the 5 types of bone?
- Long
- Short
- Irregular
- Flat
- Sesamoid
What is the shaft known as on a long bone?
Diaphysis
What are the two expanding ends called on a long bone?
The epiphysis
What are 3 examples of long bones?
Humerus, radius, ulna
What are 2 characteristics of a short bone?
Small and light
What are 2 examples of short bones?
Carpals and tarsals
What are the 3 characteristics of flat bones?
Thin, flattened and slightly curved
What are 3 examples of flat bones?
Scapula, sternum and cranium
What is an example of an irregular bone?
The bones in the verterbrae
Where are sesamoid bones typically found?
Within a tendon
What do sesamoid bones provide?
A smooth surface for the tendon to slide over
What is an example of a sesamoid bone?
The patella
What 2 areas is the skeleton divided into?
Axial skeleton and Appendicular skeleton
What 4 bones make up the axial skeleton?
Cranium, sternum, ribs and vertebrae
Which bones make up the appendicualr skeleton?
All of the bones that attach to the axial skeleton
How many irregular bones make up the vertebrae?
33
What 5 sections is the vertebral column made up of?
- Cervical
- Thoracic
- Lumbar
- Sacral
- Coccyx
What is the cervical section of the vertebral column?
The top 7 vertebrae of the neck
What is the thoracic section of the vertebral column?
The 12 vertebrae of the mid-spine
What is the lumbar section of the vertebral column?
The largest 5 vertebrae of the lower spine
What is the sacral section of the vertebral column?
The 5 fused vertebrae which forms the sacram
What is the coccyx section of the vertebral column?
The 4 fused vertebrae which forms the coccyx
What are the 5 functions of the vertebral column?
- To protect spinal cord
- To support the rib cage
- To support body weight
- Offers attachment for muscles in the back
- Intervertebral discs recieve and distribute impact
How many curves should a neutral spine have?
3
What is kyphosis of the spine?
The excessive outward curve of the thoracic region
What is scoliosis of the spine?
Abnormal curvature of the spine from left to right
What is ossification?
The process in which bones are formed
What are osteoclasts?
Cells that remove excess calcium
What are osteoblasts?
Cells that bring calcium to the bone
How does a bone grow?
The epiphyseal plates on a long bone, extend
What are the 8 functions of the skeletal system?
1) Support
2) Protection
3) Attachment for skeletal muscle
4) Source of blood cell production
5) Store of minerals
6) Leverage
7) Weight bearing
8) Reduction friction across a joint
What are the 3 types of joints?
- Fixed
- Slightly moveable
- Synovial
How are fixed joints formed?
When bones interlock during early childhood
What is an example of a fixed joint?
Cranium
What are slightly moveable joints known as?
Cartilaginous
What are the ends of slightly moveable joints covered with?
Articular cartilage
What is an example of a slightly moveable joint?
Sections of the vertebrae
Are synovial joints able to move?
Yes
What does a ligament do?
Attach bone to bone
What does a tendon do?
Attach muscle to bone
What are the 6 examples of synovial joints?
- Hinge
- Ball and socket
- Condyloid
- Gliding
- Pivot
- Saddle
Where are hinge joints found?
Elbow, knee and ankle
Where are ball and socket joints found?
Hip and shoulder
Where are condyloid joints found?
Wrist
Where are gliding joints found?
Ankle
What movements can a condyloid joint do?
Forwards, backwards and side to side
What movement can a pivot joint do?
Rotation
What is an example of a pivot joint?
Neck
What is an example of a saddle joint?
Thumb
What bones form the elbow joint?
Humerus, radius, ulna
What bones form the knee joint?
Femur and tibia
What bones form the ankle joint?
Tibia, fibula and talus
What bones form the hip joint?
Femur and pelvis
What bones form the shoulder joint?
Humerus and scapula
What is lateral flexion?
Movement of bending sideways from the waist
What is horizontal flexion?
With a straight arm or leg, moving that limb in front of your body
What is horizontal extension?
Moving the limb away from the front of the body
What is hyperextension?
Movement beyond the normal anatomical position, in the opposite direction to flexion
What is circumduction?
A circular movement that results in a conical action
What are the 2 responses of the skeletal system?
- Production of synovial fluid
- Increase in mineral uptake
What does synovial fluid help with?
Making the joint more lubricated
What happens to the synovial fluid during exercise?
It becomes less viscous and the range of movement increases
What does the synovial fluid provide?
Nutrients for the articular cartilage
What happens to your bones the more they are used?
They become stronger and denser
What happens to our bones when we perform weight bearing activities?
The body absorbs minerals such as calcium to increase bone mineral density
What is the adaptation of the skeletal system?
Increase in ligament strength
What happens to ligaments over time?
They become more pliable to increase flexibility and range of movement
What are the 3 additional factors of the skeletal system?
- Arthritis
- Osteoporosis
- Age
What is arthritis?
An inflammation to a synovial joint
What is the most common type of arthritis?
Osteoarthritis
How is arthritis caused?
Through the reduction of cartilage around the bone
How does exercise prevent arthritis?
Our joints produce more synovial fluid to reduce friction and provide the cartilage with more minerals
What is osteoporosis?
The weakening of bones due to a loss in calcium or a lack of vitamin D
What happens to our bones as we get older?
They lose mineral density and become fragile and brittle
How does exercise prevent osteoporosis?
It increases the uptake of minerals to increase bone mineral density
What type of training shouldn’t be done at a young age?
Resistance/weight training