Bones of the Upper Limbs

Scapula

Thoracic Wall

Bones, cartilage/ joint

Muscles nerves and vessels

Mammary breast

Which are the true vertebrocostal ribs?

Ribs 1-7

Which are the false vertebrocostal ribs?

Ribs 8-10

(Connect with costal cartilidges)

Thoracic cavity

Mediastinum (heart aorta trachea esophagus, etc

Pleural cavities

Pleural membranes

Which are the floating ribs?

Ribs 11-12

What are the functions of the sternum and thoracic cage joints?

Protection

Framework

Attachment

Joints

What is the anterior end of the Typical thoracic rib

costochondral joint

What is the posterior end of the Typical thoracic rib

Head, neck and tubercle

Head of typical thoracic rib

-two articular facets

• lower (bigger) articulates with body of numerically corresponding vertebra

• Upper (smaller) articulates with the next higher vertebra

Inner surface of typical thoracic rib

Has costal grooves

Lodges Intercostal nerve and vessels

VAN (vain, artery, nerve) -in this order)

Atypical Thoracic Rib

1,2, 10, 11, 12

CAT!!

Curved along its whole extent

Angulated: curve in front of the tubercle and behind the anterior end

The curve distinguishes them from the rest!

Twisted0 So that both ends of the rib can not contact the same horizontal plane

Clavicle and AC joint

Shaft

Sternal End

Acromial end (AC - acromioclavicular joint)

Subclavian groove

Clavicle connects upper limb to trunk. Acts as mobile strut (supportive brace)

What does the length of the clavicle allow?

Length allows the limb to pivot around the trunk

Increases range of motions of the limbs

Humerus

What does the radioulnar joint help to prevent?

Helps to prevent friction

Ulna

Radius

Bones of the hand

Straight Line To Pinky

Scaphoid, Lunate, Triquetrum, Pisiform

Medial to lateral (thumb to pinky)

Here Comes The Thumb

Hamate, Capitate, Trapezoid, Trapezium

Lateral to medial (pinky to thumb)

Metacarpals of the palm

Base, Shaft, Head

Which finger only has two phalanges?

The thumb only has two

There are three per finger (base, shaft, head)