Joints and muscle movements Flashcards
A
articular capsule; made up of both synovial and fibrous membranes
B
synovial membrane (inner)
C
fibrous membrane (outer)
D
synovial joint cavity containing synovial fluid
E
bone
F
articular cartilage made of hyaline
what is a freely moveable joint
synovial joint
what is the articular capsule made of in a synovial joint
synovial membrane and fibrous membrane
what is the synovial membrane made of in a synovial joint
areolar CT that is very vascularized. Allows for nutrients to diffuse to other tissues and areas in the body
what is the fibrous membrane composed of in a synovial joint
dense irregular CT. Resists pull in multiple directions
what is synovial fluid and where is it found
fills the joint cavity inside of the articular capsule. Acts as lubricant to allow bones to slide over one another without friction
what are ligaments made of and what do they do for joints
dense regular CT; resists pulling forces. They reinforce the joint by connecting bone to bone
what are bursae
pouches of synovial fluid that help to reduce friction outside of the joint cavity where bones, ligaments, and muscle rub together
what are the types of synovial joints (6)
plane/gliding, pivot, hinge, saddle, ball and socket, condyloid
uni, bi, or multiaxial–> plane/gliding joint
non-axial
uni, bi, or multiaxial–> pivot joint
uni-axial
uni, bi, or multiaxial–> hinge joint
uni-axial
uni, bi, or multiaxial–> saddle joint
bi-axial
uni, bi, or multiaxial–> ball and socket joint
multi-axial
uni, bi, or multiaxial–> condyloid joint
bi-axial
where are plane/gliding joints found
Clavicle to sternal
where are pivot joints found
between C1 and C2 vertebrae
where are hinge joints found
elbow
where are saddle joints found
between trapezium carpal bone and 1st metacarpal bone
where are ball and socket joints found
hip joint
where are condyloid joints found
between radius and carpal bones
what is meant by joint axis movement
rotation around an axis
A
plane/gliding joint
B
hinge joint
C
pivot joint
D
condyloid joint
E
saddle joint
F
ball and socket joint
which muscle action: move out of anatomical position ventrally/dorsally to create a smaller angle with a joint being orgin of angle. (shoulders, hips, knees)
flexion
which muscle action: opposite of flexion; moving back to anatomical position, increasing angle towards 180 degrees
extension
which muscle action: movement past anatomical position creating a greater than 180 degree angle
hyperextension
which muscle action: movement away from anatomical position laterally, increasing degree of angle
adduction (add)
which muscle action: back to anatomical position laterally; opposite to adduction; decreasing angle
abduction
which muscle action: described as being able to draw the circumference of a circle
circumduction
which muscle action: bone rotates around another bone
rotation
which muscle action: rotation of radius around (over) ulna; palms face posteriorly in anatomical position
pronation
which muscle action: radius and ulna parallel; palms face anteriorly in anatomical postition
supination
hint: holding a bowl of soup
which muscle action: toes flexed upward or towards the sky
dorsiflexion
which muscle action: pointed toes downward
plantar flexion
which muscle action: walking on outside edge of foot; most laterally edge of foot
inversion
which muscle action: walking on inside edge of foot; medial edge of foot
eversion
which muscle action: dorsal movement of the mandible
retraction
which muscle action: ventral movement of the mandible
protraction
which muscle action: mandible moving up/superiorly; closes mouth
elevation
which muscle action: mandible moving down/inferiorly; opens mouth
depression
which muscle action: thumb movement that allows touching of the tips of other fingers
opposition
A
Femur
B
Articular cartilage
C
meniscus