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42 Cards in this Set

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Composed of a long cylindrical shaft with relatively wide, protruding ends. shaft contains the medullary canal
Ex. phalanges, metatarsals, metacarpals, tibia, fibula, femur, radius, ulna, & humeru
Long bones
Small, cubical shaped, solid bones that usually have a proportionally large articular surface in order to articulate with more than one bone
Ex. are carpals & tarsals
Short Bones
Usually have a curved surface & vary from thick where tendons attach to very thin
Ex. ilium, ribs, sternum, clavicle, & scapula
Flat bones
Include bones throughout entire spine & ischium, pubis, & maxilla
Irregular bones
long cylindrical shaft
Diaphysis
hard, dense compact bone forming walls of diaphysis
Cortex
dense, fibrous membrane covering outer surface of diaphysis
Periosteum
fibrous membrane that lines the inside of the cortex
Endosteum
between walls of diaphysis, containing yellow or fatty marrow
Medullary (marrow) cavity
ends of long bones formed from cancelleous (spongy or trabecular) bone
Epiphysis
Movement by a limb through a diagonal plane toward and across midline of body
Diagonal adduction
Rotary movement around longitudinal axis of a bone away from midline of body
Occurs in transverse plane
a.k.a. rotation laterally, outward rotation, & lateral rotation
GENERAL
Internal rotation
Rotary movement around longitudinal axis of a bone toward midline of body
Occurs in transverse plane
a.k.a. rotation medially, inward rotation, & medial rotation
External rotation
Rotary movement around longitudinal axis of a bone toward midline of body
Occurs in transverse plane
a.k.a. rotation medially, inward rotation, & medial rotation
Internal rotation
Turning sole of foot outward or laterally
Standing on inner edge of foot
Eversion
Turning sole of foot inward or medially
Standing on outer edge of foot
Inversion
Flexion movement of ankle that results in top of foot moving toward the surface of the anterior tibia bone
Dorsal flexion
Extension movement of ankle that results in foot moving away from body
Plantar flexion
Internally rotating radius where it lies diagonally across ulna, resulting in palm-down position of forearm
Pronation
Externally rotating radius where it lies parallel to ulna, resulting in palm-up position of forearm
Supination
Inferior movement of shoulder girdle
returning to normal position from a shoulder shrug
Depression
Abduction movement at wrist of thumb side of hand toward forearm
Radial flexion (radial deviation)
Adduction movement at wrist of little finger side of hand toward forearm
Ulnar flexion (ulnar deviation)
Opposition of the thumb
Diagonal movement of thumb across palmar surface of hand to make contact with fingers
Immovable joints
May be covered with cartilage
Example:
Suture
Joints between skull bones
Gomphosis
Tooth fitting into mandible or maxilla
Synarthrodial
Slightly movable joints
Allow a slight amount of motion to occur
Three major classifications according to structure & movement characteristics
Syndesmosis
Synchondrosis
Symphysis
Amphiarthrodial
Two bones joined together by a strong ligament or an interosseus membrane that allows minimal movement between the bones
Bones may or may not touch each other at the actual joint
Ex. Coracoclavicular joint, distal tibiofibular joint
Syndesmosis
Type of joint separated by hyaline cartilage that allows very slight movement between the bones
Ex. Costochondral joints
Synchondrosis
Joint separated by a fibrocartilage pad that allows very slight movement between the bones
Ex. Symphysis Pubis & intervertebral discs
Symphysis
Functions
1.Absorbs shock
2.Protect the bone
"covers all articular surfaces"
Hyaline cartilage
Functions
1.Absorbs synovial fluid during joint unloading or distraction
2.Secretes synovial fluid during subsequent weight bearing & compression
3.Some diarthrodial joints have specialized fibrocartilage disks
Joint capsule
motion in 1 plane
1% of freedom
motion in 2 planes
2% of freedom
motion in 3 planes
3% of freedom
Multi-axial articulation
Bony surfaces butt against each other
Little motion possible in any individual joint articulation
Usually work together in series of articulations
Arthrodial (Gliding) joints
Ex. Vertebral facets in spinal column, intercarpal & intertarsal joints
Motions are flexion, extension, abduction, adduction, diagonal abd/adduction, rotation, and circumduction
Arthrodial (Gliding) joints
A uni-axial articulation
Articular surfaces allow motion in only one plane
*Ex. Elbow, knee, talocrural (ankle)
Ginglymus (Hinge) joint
Uni-axial articulation
*Ex. atlantoaxial joint, proximal and distal radio-ulnar joints
Trochoid (Pivot) joint
Bi-axial articulation
Ball and socket joint
One bone with an oval concave surface received by another bone with an oval convex surface
Condyloid (Knuckle Joint)
EX. 2nd, 3rd, 4th, & 5th metacarpophalangeal or knuckles joints, wrist articulation between carpals & radius
Flexion, extension, abduction & adduction (circumducti
Condyloid (Knuckle Joint)
Multi-axial
Ball and socket joint
Bony rounded head fitting into a concave articular surface
Enarthrodial
Ex. Hip & shoulder joint
Motions are flexion, extension, abduction, adduction, diagonal abduction & adduction, rotation, and circumduction
Enarthrodial
Unique tri-axial joint
2 reciprocally concave & convex articular surfaces
Only example is 1st carpometacarpal joint at thumb
Flexion, extension, adduction & abduction, circumduction & slight rotation
Sellar (Saddle) Joint