Lecture 5 - The Appendicular Skeleton Flashcards
what are the three functional roles of the appendicular skeleton?
1) allows for completion of daily tasks such as eating
2) allows for adjustments in body posture
3) allows for mobility of the body
comprised of an acromial (lateral) end and a sternal (medial) end
clavicle
synovial joint from the acromian to clavicle
acromioclavicular joint
synovial joint that from the sternum to clavicle
sternoclavicular joint
the acriomioclavicular joint is a passive joint, which means:
it is stabilized by so many ligaments that it just follows the scapula
the articular disc (fibrocartilage) that forms the sternoclavicular joints allows for:
movement on two planes
name the ten key parts of the scapula:
- vertebral border
- axillary border
- superior border
- subscapular fossa
- scapular spine
- acromion
- supraspinous fossa
- inferior fossa
- coracoid process
- glenoid fossa
part of the scapula that rests against the thoracic cage
subscapular fossa
part of the scapula that articulates with the humerous
glenoid fossa
part of the scapula that articulates with the clavicle
acromion
name the ten parts of the humerus
- humeral head
- greater tubercle
- lesser tubercle
- intertubercular sulcus
- deltoid tuberosity
- medial epicondyle
- lateral epicondyle
- olecranon fossa
- capitulum
- trochlea
part of the humerus that articulates with the glenoid
humeral head
the greater and lesser tubercle in the humerus allows for:
muscle attachment
part of the humerus that attaches to the deltoids
deltoid tuberosity
medial bump beside the condyle on the humerus
medial epicondyle
lateral bump beside the condyle on the humerus
lateral epicondyle
part of the humerus that allows for full arm extension
olecranon fossa
two synovial joints which articulate with the humeral condyle
capitulum and trochlea
the glenohumeral (shoulder) joint is what type of joint?
synovial ball and socket
the joint capsule of the glenohumeral joint is ____; reinforced by ____
weak, four shoulder muscles
in the shoulder, there is nothing protecting the armpit, making ____ most common
inferior dislocation
name the eight main parts of the radius and ulna
- trochlear notch
- coronoid process
- olecranon process
- radial head
- radial tuberosity
- radial styloid process
- ulnar styloid process
- interosseous membrane (syndemosis)
bone of the forearm in the lateral position (associated with the thumb)
radius
bone of the forearm in the medial position
ulna
which is larger, the radial or ulnar styloid process?
the radial styloid process (therefore the radius has more movement)
the joint between the trochlea (humerus) and the trochlear notch (ulna) can be described as what type of joint?
hinge joint (synovial uniaxial)
the joint between the capitulum (humerus) and the radial head (radius) can be described as what type of joint?
pivot joint (synovial uniaxial)
how many carpal bones are there in one hand?
8
how many metacarpal bones are there in one hand?
5