chapter 9- skeletal system Flashcards
articulation
-joint; site where two or more
bones meet
-connect bones but provide
mobility in skeleton
fibrous (anatomical/structural classification of joints)
bones joined by fibrous C.T. with no space
cartilaginous (anatomical/structural classification of joints)
bones joined by a pad or
bridge of cartilage
what is a synarthrosis that consists of interlocked bones with dense connective tissue between bones?
suture
what is an amphiarthrosis that consists of a fibrocartilage pad between bones?
symphysis
articular cartilage is composed of what cartilage?
hyaline
accessory ligaments of a diathesis function to what the joint?
strengthen
the synovial membrane makes of the inner layer of the what?
articular capsule
a what is an injury to an articulation where the ligament has been damaged?
sprain
when the body is in anatomical position, the knee and elbows are what?
extended
the specific movement of crossing the thumb across the palm is called what?
opposition
turning your palms up is the specific movement of what?
supination
the carpals are gliding joints that demonstrate a what range of motion?
multiaxial
both the shoulders and your hip are and what joints are capable of a triaxial range of motion?
ball and socket
what disease involves an autoimmune chronic inflammation of a joint that leads to damage?
rheumatoid arthritis
synovial (anatomical structural classification of joints)
bones separated by fluid-filed cavity, surrounded by C.T.
what is the anatomical/structural classification of joints based on?
connecting material
what is the physiological/function classification of joints based on?
amount of movement
synarthrosis (physiological/function classification of joints)
immovable joint (fibrous or cartilaginous)
amphiarthrosis (physiological/function classification of joints
slightly moveable joint (fibrous or cartilaginous)
diarthrosis (physiological/function classification of joints)
freely moveable joint (always synovial)
what does increased mobility equal?
decreases stability
synostosis (synarthroses)
fused bones
suture (synarthroses)
interlocked bones, sealed with dense C.T.
gomphosis (synarthroses)
tooth in alveolar socket, held by periodontal ligaments
synchondrosis (synarthroses)
hyaline cartilage bridge between bones
syndesmosis (amphiarthroses)
bones connected by ligament =band of dense regular C.T.
symphysis (amphiarthroses)
bones separated by pad of fibrocartilage
articular cartilage (diarthroses/synovial joint feature)
hyaline cartilage, no perichondrium/periosteum
synovial cavity (diarthroses/synovial joint feature)
space between/around opposing bones, has synovial fluid
articular capsule (diarthroses/synovial joint feature)
-2 layers
-outer: dense irregular C.T., continuous with periosteum
-inner: synovial membrane membrane (areolar C.T.) covers inside surface of cavity except articular cartilage, secretes synovial fluid
synovial fluid (diarthroses/synovial joint feature)
-filtrate from blood plasma + hyaluronic acid from fibroblasts
-functions: lubrication, shock absorption & nutrient distribution