Bones and Joints Flashcards
what is a joint?
union between two or more rigid components (bone or cartilage)
why do we need joints?
for growth and movement
what are the 3 structural classifications of joints?
fibrous
cartilaginous
synovial
what is the structure of a fibrous joint?
Bones are joined together by fibrous tissue
Give an example of a fibrous joint in the body.
Suture (skull). syndesmoses.
what are the two types of cartilaginous joint?
primary (synchondroses) and secondary (symphyses)cartilaginous
what is the structure of a primary cartilaginous joint?
bones are joined together by cartilage
what is the function of primary cartilaginous joints apart from allowing articulation between bones?
allows for growth, primary cartilaginous joints are not present in adults.
where would secondary cartilaginous joints be found in the body?
Mid-line (mid sagittal)
how much movement do secondary cartilaginous joints display?
limited movement
what is the structure of a secondary cartilaginous joint?
bone- hyaline cartilage - fibrocartilage-hyaline cartilage - bone
what is the structure of a synovial joint?
bone-articular cartilage - synovial membrane - synovial cavity - synovial membrane - articular cartilage - bone.
the joint may also be surrounded by a fibrous capsule.
name 6 types of synovial joint.
Plane Hinge Pivot Condylar (ellipsoid) saddle Ball and socket
give an example of a synovial hinge joint.
Elbow
Ankle
Knee
Give an example of a synovial Ball and Socket joint.
Shoulder
Hip
give an example of a synovial condylar joint.
Wrist
Metacarpophalangeal joints
metatarsophalangeal joints
give an example of a synovial saddle joint.
1st metacarpal (thumb) joint
give an example of a synovial pivot joint.
Atlanto axial joint
radioulnar joints
give examples of synovial plane joints
acromioclavicular joint
between vertebral transverse and spinous processes
between the 2nd and 7th intercostals
