Articulations Flashcards
What is arthrology?
Study of joints
Arthrology is the study of joints.
What is synarthrosis?
No movement (very stable)
Synarthrosis joints allow no movement and are very stable.
What is a fibrous joint?
Uses connective tissue between joints
Fibrous joints use connective tissue between the bones.
What is a cartilaginous joint?
Uses cartilage to connect bones
Cartilaginous joints use cartilage between the bones.
What is a synovial joint?
Freely movable (diarthrosis)
Synovial joints allow for free movement and are classified as diarthrosis.
What is a suture joint?
Joint that binds bones of skull,
Synarthrosis (doesn’t allow movement)
in middle age ossify and fuse to solid bone
Define amphiarthrosis
A joint that is slightly movable
Define diarthrosis
A joint that is able to move freely
How are joints classified?
By function and structure
What are the three structural types of joints?
Fibrous, cartilaginous, synovial
What is a fibrous joint. And what are the different kids
A joint that binds bones using collagen.
Doesn’t have a joint capsule
Suture joint, gomphoses joint, syndesmoses joint
What are the characteristics of syndesmoses joints
Amphiarthrosis (allow slight movement)
Uses LIGAMENTS to bind bones to other bones
Location: Radius/ ulna and Tibia/Fibula
Describe Gomphoses joints
Synarthrosis (don’t allow movement
Bones bond by a ligament
Found in teeth being held in alveolar socket (PERIODONTAL LIGAMENT)
“Peg in socket” joint
Explain cartilaginous joints
Bones united by cartilage
2 kinds synchondrosis and symphsis.
No joint capsule present
Explain Synchondrosis joints
Part of cartilaginous joints
Synarthrotic (doesn’t allow movement)
Bones untiled by HYALINE cartilage
Location: 1st rib attachment to sternum, and at the epiphyseal plate (binding ephysis to diaphysis)
Explain symphyses joints (symphysis joints)
Part of cartilaginous joints
Amphiarthrotic (allows slight movement)
Bones united by FIBROCARTILAGE
Location: intervertebral joints, Pubic Symphysis
What are the 2 kinds of cartilaginous joints
Synchondrosis and symphyses
What are synovial joints
Bones separated by fluid filled joint cavities.
Diarthrotic (freely moving)
What is a joint cavity/ joint capsule? And where are they found?
Small synovial fluid filled sacks found at synovial joints.
Where can you find synovial joints?
Almost all limb joints
What is articular cartilage?
Hyaline Cartilage that covers the ends of long bones
What is the articular capsul? What is its function
A 2 layer capsul that holds synovial joints together and produces synovial fluid
What are the two layers of the articular capsule?
External fibrous layer- dense irregular connective tissue provides strength and durability for joint
Inner synovial membrane- loose connective tissue that produces synovial fluid