Anatomy lecture- exam 2 (ch. 8) Flashcards
where two bones meet
joint
- fluid
- cartilage
- fibrous
types of joint tissue
joints w/ no movement
synarthrosis
- suture
- gomphosis
- synchondrosis
-synostosis
synarthrosis
joints w/ some movement
amphiarthrosis
- syndesmosis
- symphysis
amphiarthrosis
free movement
diarthrosis (synovial)
synovial joint components
- accessory structures
- blood vessels
- nerves
- lubricates articular cartilage & reduces friction
- nourishes chondrocytes of articular cartilages
- acts as a shock absorber
functions of synovial fluid
whats labeled A
fibrous joint capsule
whats labeled B
synovial membrane
whats labeled C
articular cartilages
whats labeled D
joint cavity containing synovial fluid
accessory structures of a knee joint
- bursa
- fat pad
- meniscus
- ligaments
- tendons
tiny pockets of synovial fluid (water balloon)
Bursa
- labeled A
below patella for support
fat pad
- labeled B
crescent shape of connective tissue that provides additional support
meniscus
- labeled C
anterior-posterior axis
frontal plane
superior-inferior axis
transverse plane
lateral-medial axis
sagittal plane
joints can be
- monaxial
- biaxial
- triaxial
- monaxial
- slight linear motion
plane joint
- monaxial
- rotation
pivot joint
- biaxial
- angular motion
saddle joint
- monaxial
- angular motion
hinge joint
- biaxial
- angular motion
condylar joint
- triaxial
- angular motion, circumduction, rotation
ball-and-socket joint
towards longitudinal axis
adduction
away from longitudinal axis
abduction
- abduction
- adduction
- flexion
- extension
angular motion
what type of angular motion is in the frontal plane; lateral/medial
abduction & adduction (plane)
- decreases the angle between bones
- “bends forward”
flexion
- increases angle between bones
- “bends backward”
extension
hyper extension/ flexion means
beyond normal limits
what type of angular motion is in the anterior/ posterior plane
flexion & extension (plane)
- R/L head rotation
- lateral (external) rotation
- medial (internal) rotation
- supination/ pronation
types of rotation