Osteology of the Upper Limb Flashcards
A multi-tasking, mobile appendage that we humans use to engage our surrounding environment, manipulate objects, etc.; Includes elements of the shoulder, arm, forearm, wrist, and hand
Upper limb
The ___ is made up of the clavicle and scapula
pectoral girdle
What are the anterior muscles of rotator cuff?
subscapularis
What are the posterior muscles of rotator cuff?
supraspinatus, infraspinatus, and teres minor
The ___ of the humerus articulates with the glenoid of the scapula
head
What muscle attaches to the anterior border of the clavicle?
Pectoralis major
What muscle attaches to the inferior surface of the clavicle?
Subclavius
What muscle attaches to the superior surface of the clavicle?
Trapezius
What muscle attaches to the superior surface and anterior border of the clavicle?
Deltoid
short head of biceps brachii, coracobrachialis, and pectoralis minor all attach to the ____ of the scapula
coracoid process of scapula
The deltoid and trapezius attach to the ___ of the scapula
spine of scapula
serratus anterior, rhomboid major, rhomboid minor, levator scapulae (superior angle), and latissimus dorsi (inferior angle)* attach to the ___ of the scapula
medial (vertebral) vertebral border of the scapula
The teres minor and major are attached to the ___ of the scapula
Lateral (axillary) border of scapula
What muscle is found in the subscapular fossa of scapula?
subscapularis
What muscle is found in the supraspinous fossa?
supraspinous
What muscle is found in the infraspinous fossa?
infraspinous
The ___ of the humerus is for attachment of subscapularis
lesser tubercle
The ___ of humerus is for attachment of rest of rotator cuff muscles
greater tubercle
The ____ of the humerus is for long tendon of biceps brachii
bicipital groove(intertubercular sulcus)
The ____ of the humerus is for attachment of deltoid muscle
deltoid tuberosity
The ___ of the humerus provides attachment for coracobrachialis and brachialis muscles
midshaft
What 3 muscles of rotator cuff attach to greater tubercle of humerus?
Supraspinatus, infraspinatus, and teres minor
What rotator cuff muscle attaches to the lesser tubercle?
Subscapularis
Which muscle originates on the anterior aspect of the midshaft of the humerus?
brachialis
Which muscle inserts on medial aspect of the midshaft of the humerus?
coracobrachialis
The ____ of the humerus provides origin for wrist & finger flexors (common flexor origin)
Medial epicondyle
The ___ of the humerus provides origin for wrist and finger extensors (Common Extensor Origin)
Lateral epicondyle
Which bone mostly forms the elbow joint?
Ulna
The ____ of the humerus articulates with the radius
Capitulum
The ____ of the humerus articulates with the ulna
Trochlea
Which bone of forearm is on medial side?
Ulna
Which bone of the forearm is on distal side (thumb)
Radial
The _____ of radius articulates with capitulum of humerus and radial notch on ulna
head of radius
The _____ of the radius provides attachment site for biceps brachii tendon
radial tuberosity
The ____ of the radius provides attachment sites for pronators and supinators of the forearm, as well as some of the flexors and extensors of the wrist and fingers.
radial shaft
The _____ of the radius articulates with the scaphoid & lunate carpal bones (radiocarpal joint)
distal end of radius
The _____ of the ulna articulates with trochlea of humerus to form the stable hinge joint of the elbow
trochlear notch(semilunar notch)
The ____ of the ulna provides insertion point for brachialis & origin for pronator teres
coronoid process
The ____ of the ulna provides insertion for the triceps tendon
olecranon process (“elbow”)
The ____ of the ulna provides origin for pronator quadratus and supinator as well as digital extensors
ulnar shaft
The _____ of the ulna does not articulate with the carpal bones
distal ulna
How many bones (carpals) are there in the wrist?
8
How many metacarpals are in the hand?
5
How many segments do digits 2-5 have?
3
How many segments does digit 1 have?
2
How many bones are there in the phalanges?
14
What are the bones of the wrist?
Scaphoid) (Lunate) (Triquetrum) (Pisiform) (Hamate)(Capitate) (Trapezoid) (Trapezium)
The flexors and extensors of the wrist (“carpi”) have their insertions on _____
carpals
The flexors and extensors of the digits (“digiti”) have their insertions on ____
phalanges
The intrinsic muscles of the hand mostly originate and insert on _______, but some insert on structures associated with phalanges
metacarpals
