Exercise 7 Flashcards
Define Joint/Articulation
When two or more bones come to together
Synarthrosis
Synarthrosis (immovable) Immovable joints that include skull sutures, the articulations between the teeth and the mandible, and the joint found between the first pair of ribs and the sternum
Structure: Fibrous
Movement: none
Example: Sagittal suture
Diarthrosis joint .
Diarthrosis joint (freely movable) is one in which the adjoining bone ends are covered with a thin cartilaginous sheet and joined by a joint capsule lined by a synovial membrane, which secretes synovial fluid.
Structure: Synovial
Movement: Free
Example: Knee joint
Amphiarthrosis
(slightly movable) a joint that has limited mobility. An example of this type of joint is the cartilaginous joint that unites the bodies of adjacent vertebrae
Structure: cartilaginous
Movement: Slight
Example: Pubic symphysis
Synostosis
When a suture becomes ossified, it is called a synostosis
Feature: Saw tooth connections between articulating bones.
Movement: none
Example: Frontal suture
Syndesmosis
Contain dense connective tissue that forms either a ligament or a sheet such as the interosseous membrane.
Feature: Ligaments connect articulating bones.
Interosseous membrane
Movement: slight, slight
Example: Ulnar Ligament, Fibula and tibia
Gomphosis
The Joint between a tooth and its alveolar socket.
Feature: Fibrous tissue connects teeth to alveolar processes
Movement: None
example: Joint between teeth and mandible
Synchondrosis
contains Hyaline cartilage between articulating bones.
Movement: Slight
Example: Costal cartilage
Sympysis
A dense band of fibrocartilage that connects bones. Theses joints are found between the manubrium and sternum, between pubic bones and vertebrae.
Feature: Fibrocartilage
Movement: Pubic Symphysis joint between intervertebral discs.
Synovial Joint
The ends of articulating bones are covered with hyaline cartilage and surrounded by a fibrous capsule filled with synovial fluid.
Articular Cartilage
The Hyaline Cartilage covering bones in synovial joints
Bursae
Synovial fluid-filled pockets that reduce friction in the limbs where skin, tendons, ligaments or rub against bony points or ridges.
Uniaxial joints
Uniaxial joints are those that hinge or pivot
Biaxial Joints
allow motion in two planes
Triaxial Joints
Allow motion in three plane
Hinge Joint
Hinge Joint is the simplest of joint; it permits flexion and extension in only one direction.
Plane joint
Plane joint are formed by articulating surface
Pivot Joint
Allow rotation and is found at the articulation between atlas (C1) and axis (C2, and the radioulnar joint that permits the palms to supinate and pronate.
Saddle Joint
The surface of one bone is shaped like a saddle and the articulating bone fits into the saddle.
Condyloid Joint
Consists of an oval-shaped condyle of one bone that fits into a cavity formed by an articulating bone.
Condyloid Joint
Consists of an oval-shaped condyle of one bone that fits into a cavity formed by an articulating bone.
Ball and Socket joint
permits movement in several axes including flexion and extension, and adduction, medial and lateral rotation, and circumduction.
Immovable Joint
The skull lines
Immovable Joint
The skull lines
