Anatomy Unit 2 Lab 7

The Upper Appendage

Clavicle

Collarbone

Acromion process

Bony projection of the scapula that forms the top of the shoulder

Coracoid process

Hook-shaped projection of the scapula where muscles and ligaments attach

Glenoid cavity

Shallow socket of the scapula where the humerus fits

Supraspinous fossa

Depression above the scapular spine

Infraspinous fossa

Depression below the scapular spine

Subscapular fossa

Depression on the front of the scapula

Scapula

Shoulder blade

Scapular spine

Ridge on the back of the scapula

Head of humerus

Rounded upper end of the humerus that fits into the glenoid cavity

Greater tubercle

Large projection on the humerus where rotator cuff muscles attach

Lesser tubercle

Small projection on the humerus where the subscapularis attaches

Humerus

Upper arm bone

Deltoid tuberosity

Bony attachment point on the arm bone where the deltoid muscle attaches to the humerus

Glenoid labrum

Cartilage ring that deepens the shoulder socket

Glenohumeral ligaments

Connective tissue bands that stabilize the shoulder joint

Pectoralis major orign?

clavicle, sternum, and costal cartilages

Pectoralis major insertion?

proximal to the humerus

Pectoralis major action?

flexion and adduction of the humerus

Pectoralis minor origin?

ribs 3-5

Pectoralis minor insertion?

coracoid process of the scapula

Pectoralis minor action?

shoulder protraction

Serratus anterior orign?

ribs 1-9

Serratus anterior insertion?

medial border of the scapula

Serratus anterior action?

protraction and rotation of the scapula

Deltoid Muscle origin?

acromion and spine of the scapula

Deltoid insertion?

deltoid tuberosity of the humerus

Deltoid action?

abduction of the humerus

Trapezius Muscle origin?

vertebrae and skull

Trapezius insertion?

acromion process and spine of scapula

Trapezius action?

shoulder retraction

Latissimus Dorsi Muscle origin?

vertebrae and thoracolumbar fascia

Latissimus Dorsi insertion?

proximal to humerus

Latissimus Dorsi action?

extends and adducts the humerus

Teres Major Muscle origin?

inferior angle of scapula

Teres Major Muscle insertion?

proximal to humerus

Teres Major Muscle action?

extension and medial rotation of humerus

Levator scapulae origin?

Transverse processes of C1-C4

Levator Scapulae insertion?

medial border of the scapula

Levator Scapulae action?

elevation of the scapula

Rhomboids origin?

Spinous processes of C7-T5

Rhomboids insertion?

medial border of the scapula

Rhomboids action?

retraction of the scapula

Teres minor origin?

Lateral border of the scapula

Teres minor insertion?

greater tubercle of the humerus

Teres Minor action?

lateral rotation of the humerus

Supraspinatus origin?

Supraspinous fossa of the scapula

Supraspinatus insertion?

greater tubercle of the humerus

Supraspinatus action?

humerus abduction

Infraspinatus muscle origin?

Origin: infraspinous fossa of the scapula

Infraspinatus insertion?

greater tubercle of the humerus

Infraspinatus action?

lateral rotation of the humerus

Subscapularis Muscle origin?

Subscapular fossa of the scapula

Subscapularis Muscle insertion?

lesser tubercle of the humerus

Subscapularis Muscle action?

medial rotation of the humerus

Capitulum

Rounded part of the humerus that articulates with the radius

Trochlea

Part of the humerus that articulates with the ulna

Coronoid fossa

Depression on the front of the humerus that receives the ulna during elbow flexion

Olecranon fossa

Depression on the back of the humerus that receives the olecranon during elbow extension

Medial epicondyle

Inner projection of the humerus where flexor muscles attach

Lateral epicondyle

Outer projection of the humerus where extensor muscles attach

Head of radius

Rounded upper end of the radius

Neck of radius

Below the head of the radius: immediately distal to the head

Radius

Forearm bone on the thumb side

Radial tuberosity

Roughened area where the biceps attaches

Olecranon process

Projection of the ulna that forms the point of the elbow

Trochlear notch

C-shaped notch of the ulna that articulates with the humerus

Ulna

Forearm bone on the little-finger side

Coronoid process of the ulna

Projection of the ulna that helps stabilize the elbow

Biceps brachii origin?

glenoid cavity and coracoid process

Biceps Brachii insertion?

radial tuberosity

Biceps Brachii action?

elbow flexion

Brachialis origin?

anterior, distal humerus

Brachialis insertion?

coronoid process of ulna

Brachialis action?

elbow flexion

Brachioradialis origin?

lateral, distal humerus

Brachioradialis insertion?

distal anterior radius

Brachioradialis action?

elbow flexion

Triceps brachii origin?

glenoid cavity and humerus

Triceps Brachii insertion?

olecranon process

Triceps Brachii action?

elbow extension

Radial notch (of the ulna)

Proximal end of the ulna that accommodates the head of the radius

Ulnar notch (of the radius)

Depression where the ulna articulates with the radius

Pronator teres

Muscle that pronates the forearm

Supinator

Muscle that supinates the forearm

Medial Epicondyle (humerus)

Bony projection on the inner side of the humerus where the wrist and finger flexor muscles attach

Lateral epicondyle (humerus)

Bony projection on the outer side of the humerus where the wrist and finger extensor muscles attach

Styloid process of ulna

Pointed projection at the end of the ulna

Carpals

Eight bones of the wrist arranged in 2 rows (proximal and distal row)

Metacarpals

Five bones of the palm

Phalanges

Bones of the fingers and thumb

Scaphoid

Boat-shaped carpal bone on the thumb side

Lunate

Crescent-shaped carpal bone in the proximal row

Triquetrum

Three-sided carpal bone on the little-finger side

Pisiform

Pea-shaped carpal bone

Trapezium

Carpal bone that articulates with the thumb metacarpal

Trapezoid

Carpal bone near the index finger

Capitate

Largest carpal bone near the center of the wrist

Hamate

Carpal bone with a hook-shaped projection on the little-finger sid