Muscular Skeletal System Flashcards
It provides
Suport
Protection of internal organs
How many bones in the human body
206
What are the bones divided into
Axial and appendicular
Axial
Skull ribs backbone
Appendicular
Arms and legs
How many bones in a spine
33
CTLSC
Cervical 7 Thoracic 12 Lumbar 5 Sacrum 5 Coccyx 4
Antagonistic muscles
Two muscles that have opposite effects on each other
Three bones in arms
Humerous radius ulna
Carpals
Fingers
Metacarpals
Hands
Radius to
Thumb
Ulna to
Fingers
Pectoral girdle
Collarbone and shoulder bone
Another word for collarbone
Clavicle
Another word for shoulder bone
Scapula
Upper arm us called..
Humerous
Thigh bone
Femur
Knee bone
Patella
Tibia is
Thick
Fibula is
Thin
Feet
Tarals
What are xrays only used to investigate
Hard surface materials
Medullary cavity
The hallow centre region in a long bone containing bone marrow
What does the medullary cavity contain
Yellow bone marrow thats stores fat
Periosteum
Though fiberous layer surrounding each bone
Cartilage
Covers the tips of bones in joints reducing friction and acting as a shock absorber
Compact bone
Contains Living cells (osteoblasts) embedded in calcium salts and protein (collagen)
Osteocytes
mature osteoblasts that have become trapped within the bone matrix they produced
Collagen
Protein in compact bones
Where is collagen found
Outer edge of the bone
Spongy bone
Makes blood cells and gives strenght to bones and makes them lighter
Joint
Where two bones meet
Ligaments
Elastic tissues that connect bone to bone
3 main types of joints
Immovable
Partially movable
Movable
Immovable joint
Bones are fused eg skulls and pelvis
Partially movable
Bones slide over each other eg wrist ankle
Name the two types of synovial joints
Ball and socket
Hinge
Ball and socket joints
Allows movement in most directions eg hip and shoulder
Hinge joint
Allows movement in one place only eg elbow knee finger toe
Muscles
Pull on bones and provide movement
What are muscles attached to bones by
Tendons
When can muscles pull
When they contract
Example of a bone disorder
Arthritis
Arthritis
A painful disorder where inflammation in one or more joints resulting in swelling and restricted movement
Causes of arthritis
Diseases eg gout, tb snd infections of the synovial membranes
Prevention of arthritis
Good diet
Care in footwear
Treatment of arthritis
Aspirin
Replacement
Synovial fluid
Produced in movable joints to lubricate and reduce friction
Tendons
connect muscle to bone
What does muscle contraction need
Energy
Red bone marrow makes
Blood cells
Yellow bone marrow is
Inactive
What is the vertebrae seperated by
Discs of cartiglage
Three types of ribs
True false floating
Yellow bone marrow stores
Fat
Osteoarthritis
Wear and tear of the bone
Osteoclasts
Digest bone
Osteoblasts
Create/ build bone and deposit it on the outside of the bone
Cause of wear and tear of bone
Joints wearing faster than can be replaced