Flashcards in MSK S1 - The Skeletal System - Bones & Joints Deck (56)
What are the three types of joint?
Sinovial, fibrous and cartilaginous
How much movement do each of the three joint types allow?
Synovial - most movement and most variety of movement
Cartilaginous - no/minimal movements
Fibrous - virtually no movement
What are the types of cartilaginous joint?
Describe synchondroses (a type of cartilaginous joint)
Minimal or no movement
Covered by a layer of hyaline cartilage
Eg sternocostal joints and immobile temporary joint between epiphysis and diaphysis of growing long bones
What are the types of synovial joint?
Ball and socket
Describe symphyses (a type of cartilaginous joint)
Ends of bones covered with hyaline cartilage
Held together by a disk of fibrocartilage and ligaments
Variable but usually limited movements
Eg sacro-coccygeal joint, manubriosternal joint,joints between vertebral bodies.
What are the two main divisions of the skeleton?
The Axial and the Apendicular skeleton
What three things does the stability of joints depend upon?
The shape, size and arrangement of articular surfaces
The tone of muscles around the joint
What are the types of fibrous joint?
Describe gomphoses (a type of fibrous joint)
Found where the teeth articulate with the maxillae and the mandible
Fibrous connection called the periodontal ligament
Describe syndesmoses (a type of fibrous joint)
Bones held together by an interosseous membrane
Examples: middle tibiofibular joint and middle radio-ulnar joint
What is the main purpose of the axial skeleton?
To provide protection to vulnerable and vital body parts
What is the main function of the Apendicular skeleton?
To allow motility
Describe sutures (a type of fibrous joint)
Only found between bones of skull
Limited movement until 20 years of age, then become fixed.
What are the functions of bone?
Where does haemopoesis take place?
In red bone marrow
Within bones, where are minerals stored?
In bone matrix
What are the types of bone?
What is a Tuberosity?
A roughened or rounded elevation of a bone where a muscle/ligament attaches
What is a tubercle?
A small, rounded lump
What is a spine/spinous process?
A slender projection
What is a trochanter?
A large projection of the femur
What is a chondyle?
A large prominence or rounded surface
What is an epichondyle
A smaller prominence above a chondyle
What is a crest?
What is a facet?
A flattened surface for joint or muscle attachment
What is a sinus?
A hollow space
What is a meatus?
A tunnel or canal
What is a foramen?
A hole or opening