Week 5 - Bones and Jts

Question 1

Bones of the axioappendicular portion of the body (ARM and shoulder)

Answer 1

Scapula, clavicle, manubrium, sternum, humerus

Question 2

PECTORAL GIRDLE or SHOULDER GIRDLE joints (3 true joints)

Answer 2

1. Sternoclavicular (SC) joint: synovial
2. Acromioclavicular (AC) joint: synovial
3. Glenohumeral (GH) joint: synovial
4. Scapula moves on thoracic wall = not a true joint

Question 3

Sternoclavicular joints ligaments (3)

+ what lies between the clavicle and manubrium?

Answer 3

Sternoclavicular ligament, costoclavicular ligament, interclavicular ligament

Articular disc

Question 4

Acromioclavicular joint (ACJ) ligaments

Answer 4

Acromioclavicular (AC) ligament, Coraco-acromial (CA), Coracoclavicular (CC) ligament (trapezoid, conoid lig.)

Question 5

Function of CA, AC & CC

Answer 5

Function: prevent superior displacement of the humerus in the glenoid fossa (CA)

Function: maintain relationship of clavicle to scapula in elevation of UL (AC & CC)

Question 6

What happens at the SCJ and ACJ when you protract and retract the shoulder?

Answer 6

Rotation forward and backward of the scapula on the thoracic wall. Winging of scapula during protraction.

IMAGES WILL HELP (Slide 25)

Question 7

Movements at SCJ & ACJ?

Answer 7

Sagittal Plane: Anterior & Posterior Rotations.
Frontal Plane: Elevation & Depression.
Transverse Plane: Protraction & Retraction