Chapter 5 Flashcards
What is the largest and longest bone of the upper body?
Humerus
What does the humerus articulate with?
Scapula
What makes up the shoulder joint?
Scapula and humerus
What is the most proximal part of the humerus?
Head
What is directly below and lateral to the head of the humerus?
Anatomic neck
What is the Anatomic Neck?
Looks like a line between the head and adjoining greater and lesser tubercles
Where is the lesser tubercle located?
Anterior surface directly below the neck
Where is the greater tubercle located?
Lateral side of the humerus
What is the groove located in between the two tubercles?
Intertuberacle groove
What is the surgical neck?
Where the humerus starts to taper down
Do more fractures happen at the surgical neck or anatomical neck?
Surgical
What 2 bones create the shoulder girdle?
Clavicle
Scapula
What is the function of the clavicle and scapula?
Connect the upper limb to the trunk or axial skeleton
How does the shoulder girdle attach to the trunk anteriorly?
Joins the clavicle which in turn is anteriorly joined to the upper portion of the sternum
How does the shoulder girdle attach to the trunk posteriorly?
Joins the scapula which is attached to the axial skeleton by muscles
What is the Acromial Extremity?
Lateral end of the clavicle
What does the Acromial Extremity articulate with?
Acromion of the scapula
What is the Acromioclavicular joint?
Space between lateral end of the clavicle and acromion of the scapula
What is the Sternal Extremity?
Medial portion of the clavicle
What does the Sternal Extremity articulate with?
Manubrium
What is the sternoclavicular joint?
Space between medial portion of clavicle and manubrium
How are female/male clavicles different?
Females are shorter and straigher