Chapter 13 - Pectoral Girdle & Upper Extremity

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Snow College

What two bones make up the pectoral girdle?

Clavicle & Scapula

What is the vernacular for "clavicle"?

Collarbone

What is the medial end of the clavicle?

Sternal end

What is the lateral end of the clavicle?

Acromial end

What is the vernacular for "scapula"?

Shoulder blade

What is the ridge of bone on the posterior side of the scapula?

Spine of the scapula

What bony prominence of the scapula can palpated on the lateral side?

Acromion

The scapula is a flat bone. What are it's 3 edges?

Superior border
Medial border
Lateral border

What are the 3 meeting points of the edges of the scapula?

Superior angle
Inferior angle
Lateral angle

With what part of the scapula does the humerus articulate?

Glenoid cavity

What bony process lies superior to the scapula's articulation with the humerus and serves as the origin for the long head of the biceps brachii?

Supraglenoid tubercle
(super biceps brachii)

What bony process lies inferior to the scapula's articulation with the humerus and serves as the origin for the long head of the triceps brachii?

Infraglenoid Tubercle
(Infra - Triceps Brachii)

What is the broad relatively smooth anterior depression of the scapula?

Subscapular fossa

What is the depression superior to the spine of the scapula?

Supraspinous fossa

What is the depression inferior to the spine of the scapula?

Infraspinous fossa

What is the only bone of the brachium?

Humerus

What part of the humerus articulates with the scapula?

Head of humerus

What bony prominence of the humerus lies proximally and laterally?

Greater tubercle

What bony prominence of the humerus lies proximally and anteriorly?

Lesser tubercle

Through what feature of the humerus does the tendon of the long head of the biceps brachii run?

Intertubular sulcus

What feature of the humerus is the location of the ephiphyseal plate or line?

Anatomical neck

What feature of the humerus lies in the proximal region where the bone begins to narrow?

Surgical neck

What are 2 terms for the long, central region of the SCAPULA or any other long bone? did he mean humerus?

Diaphysis
(Contains medullary cavity - houses marrow - marrow creates blood)

What rough prominence lies on the lateral side of the middle portion of the humerus?

Deltoid tuberosity

What are distal, easily palpated bony projections on the humerus?

Medial Epicondyle,
Lateral Epicondyle

What feature of the humerus articulates with the head of the radius?

Capitulum

What feature of the humerus articulates with the ulna?

Trochlea

What is the distal, lateral depression on the anterior side of the humerus?

Radial fossa

What is the distal, medial depression on the anterior side of the humerus?

Coronoid fossa

What is the distal depression on the posterior side of the humerus?

Olecranon fossa

From lateral to medial, what are the 2 bones of the forearm?

Ulna & radius

What is the relation of the radius and ulna in anatomical position?

Parallel with the radius being located laterally

Which of the 2 bones of the forearm moves during pronation?

Radius
(Crossed radius rotates around the ulna)

What portion of the radius articulates with the humerus?

Head
(Articulates with capitulum of humerus)

What narrow region of the radius lies just distal to the articulation with the humerus?

Neck

On what prominence of the radius does the biceps brachii insert?

Radial tuberosity

What bony projection of the radius can be palpated on the distal, lateral side of the forearm?

Styloid process

What distal feature of the radius articulates with the ulna?

Ulnar notch
(When we rotate wrist the head rotates in the notch)

What feature of the ulna articulates with the humerus?

Trochlear notch

What prominent projection of the ulna forms the posterior "bump" of the elbow?

Olecranon Process

What prominence of the ulna forms the inferior lip of the trochlear notch?

Coronoid process
(Contains radial notch)

What feature of the ulna forms a part of the proximal radioulnar joint?

Radial notch

What feature of the ulna appears as a bump on the distal medial side of the forearm?

Head of Ulna
(Head of the Ulna is Distal - bump below wrist..)

What feature of the ulna can be palpated on the distal, medial side of the forearm?

Styloid process of Ulna
( large bump below wrist)

What sheet of dense regular connective tissue lies between the radius and ulna?

Interosseous membrane
(holds two bones together during pronation and supination)

What is the collective name of the 8 small bones of the wrist?

Carpal Bones

From lateral to medial, what bones form the proximal row of carpals?

Scaphoid, Lunate, Triquetrum, Pisiform
(Some lovers try positions)

From lateral to medial, what bones from the distal row of carpals?

Trapezium, Trapezoid, Capitate, Hamate
(That they can't handle)

What long bones support the palm of the hand?

Metacarpals

How are the bones in the palm of the hand numbered?

Lateral to medial, 1-5

What are the bones in the digits?

Phalanges

How many bones are in the thumb?

2

What bone in the thumb articulates with the first metacarpal?

Proximal phalanx of the 1st digit

What bone in the thumb lies within the segment of that digit with the nail?

Distal phalanx of the 1st digit

Digits II through V each have 3 bones. How are they designated?

Proximal phalanx, Middle phalanx, Distal phalanx

What is the difference between the digits and the phalanges?

- Digits are fingers and toes.
- Phalanges are skeletal elements.

What does the trochlear notch do when doing bicep curls?

Glides over trochlea

What is the anterior process that has the form of a crows beak on the scapula?

Coracoid Process*

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