Appendicular Skeleton Flashcards
2 components of the upper limb
Pectoral girdle
Free upper limb
Pectoral girdle
Attach bones of the free upper limbs to the axial skeleton
2 components of pectoral girdle
Clavicle
Scapula
Free upper limb
arm, hand and phalanges
Strut
Clavicle resists compression of the pectoral girdle by propping up the shoulder joint away from the rib cage
Sternal End of Clavicle
Articulates with the manubrium of the sternum
Acromial End
Broad, flat lateral end of clavicle that articulates with acromion of scapula
Acromioclavicular Joint
Acromial end of clavicle joins acromion of scapula
Conoid Tubercle
Inferior surface of the lateral end of clavicle. Attachment for conoid ligaments
Impression for costoclavicular ligament
Inferior surface of sternal end of clavicle connects first rib to clavicle
Spine of scapula
Ridge runs diagonally on the posterior side
Acromion
Lateral end of scapula that is a flattened and expanded process
Glenoid Cavity
Shallow depression in scapula accepts head of the radius
Glenohumeral Joint
Glenoid cavity of scapula and the head of the humerus
Medial Border of scapula
Thin edge closer to vertebral column
Lateral Border of scapula
Thick edge closer to arm
Inferior angle of scapula
Medial and lateral borders join
Superior angle of scapula
Superior edge and medial border join
Scapular notch
Prominent indentation along superior border where suprascapular nerve passes
Coracoid process
Hooky bump on lateral end of superior border of scapula where tendons attach
Supraspinous Fossa
Superior to spine of scapula
Infraspinous Fossa
Inferior to spine of scapula
Subscapular Fossa
On anterior surface. Attachment for subscapularis muscle
Head of humerus
Proximal end articulates with glenoid cavity of scapula
Anatomical Neck
Groove bordering the tip of head of humerus. Former epiphyseal plate
Greater tubercle of humerus
Lateral projection distal to anatomical neck
Lesser tubercle of humerus
Projects anteriorly
Surgical neck
Distal to tubercles. Where head of humerus tapers into the shaft
Deltoid tubersoisty
Rough area in the middle of the shaft of humerus. Deltoid tendon attachment
Radial Groove
Posterior surface on top half of radius. Contains radial nerve
Capitulum
Lateral knob on humerus articulates with head of radius
Radial Fossa
Anterior depression on humerus above capitulum. Articulates with head of radius when arm is bent
Trochlea
Medial to capitulum on humerus. Knob that articulates with ulna
Coronoid Fossa
Anterior depression on humerus beside radial fossa. Recieves coronoid process of ulna when arm is flexed
Olecranon Fossa
Big posterior depression on humerus that recieves olecranon of ulna when arm is straight
Medial/Lateral epicondyles of humerus
Rough projections on distal end for tendon attachment
Funny Bone
Ulnar nerve over medial epicondyle in humerus
Ulna
Medial side of forearm. Longer than radius
Olecranon
Proximal end of ulna forms elbow
Coronoid Process
Anterior projection below large trochlear notch on ulna
Trochlear Notch
Anterior side of olecranon of ulna. Recieves trochlea of humerus
Radial Notch
Lateral and inferior to trochlear notch. Articulates with head of radius
Ulnar Tuberosity
Below coronoid process
Styloid Process
Notch on the distal end and the very bottom
Radius
Thumb side of forearm
Radial Tuberosity
Below neck of radius. Attachment for bicep tendons
3 bones in elbow
Ulna, Radius, Humerus
2 Articulations in elbow
Head of radius joins capitulum of humerus
Trochlear notch of ulna joins trochlea of humerus
Interosseous Membrane
Joins shafts of ulna and radius
3 connections between ulna and radius
Interosseous membrane
radial notch
Ulnar notch
Radiocarpal Joint
Radius joins with lunate and scaphoid of wrist
Proximal radioulnar joint
head of radius and ulnar notch
Distal radioulnar joint
Head of ulna and ulnar notch
Carpus
Wrist containing 8 carpals joined by ligaments
Proximal row of carpals from lateral to medial
Scaphoid, Lunate, Triquetrum, Pisiform
Distal row of carpals from lateral to medial
Trapezium, Trapezoid, Capitate, Hamate
Mnemonic for carpal bones
Stop letting those people touch the cadavers hand
Flexor Retinaculum
Fibrous band of connective tissue covering carpals
Carpal Tunnel
Concave space formed by Pisiform/ hamate and scaphoid/ trapezium