A&P Humerus and Shoulder Girdle

What 3 bones makes the shoulder girdle?
Humerus, scapula, and clavicle

What are the 3 joints in the shoulder girdle?
Shoulder, AC, and SC

What is the strongest bone in the upper limb?
Humerus

Technical name for shoulder joint
Glenohumeral joint or scapulohumeral joint

Anatomical neck
Oblique line that separates head from shaft

Surgical neck
Just below level of tubercles

Most common fracture site in humerus
Surgical neck

Lesser tubercle
A slightly protruding area found on the anterior surface of the humerus

Greater tubercle
A large projection of bone found on the lateral aspect of the humerus

Bicipital groove
A large indentation found between the tubercles

Another name for bicipital groove
Intertubercular

What is the purpose of the bicipital groove?
Allows attachment of ligaments (specifically the bicep)

Placement of what determines what we see proximally of the humerus?
Epicondyles

To see the greater tubercle how do the epicondyles have to be?
Parallel to board, AP w/ external rotation

To see the lesser tubercle how do the epicondyles have to be?
Perpendicular

Body/shaft
Center section between each end

Acromial end
Lateral aspect of clavicle. Articulates with scapula to form AC joints

Sternal end
Medial aspect of clavicle-articulates with sternum to form SC joint

Which gender tends to have less curved/shorter clavicles?
Female

Why do males tend to have thicker/more curved clavicles?
More muscle mass

What type of bone is the clavicle classified as?
Long bone

What type of bone is the scapula classified as?
Flat bone

How many borders does the scapula have?
3: Lateral, Superior, medial

Another name for the lateral border of the scapula?
Axillary

Another name for the medial border of the scapula?
Vertebral

Which boarder is thicker?
Axillary

What are the 3 angles of the scapula?
Superior, inferior, and lateral

What forms the superior angle?
The medial and superior border meeting

What forms the inferior angle?
Medial and lateral border meeting

What forms the lateral angle?
Lateral and superior border meeting

What is another name for the lateral angle?
Head of scapula

Body of scapula
Mid-section of scapula. Thinnest section and somewhat bowed for strength

Other names for body of scapula
Blade, wing, ala

Glenoid cavity/fossa
Shallow cavity for the head of the humerus, found on the lateral angle or head of the scpaula

Coracoid process
Finger-like projection coming from the anterior surface of the scapula

Scapular notch
Scallop found at the base of the coracoid process in the superior border

Acromion process
Process poking anterior from the posterior surface of the scapula

Costal surface
The anterior surface of scapula found adjacent to posterior ribs

Subscapular fossa
A shallow depression in the surface of the costal surface of the scapula

Dorsal surface
Term used to describe posterior surface of scapula

Spine
Formation of bone which runs from medial to lateral border and will eventually form the acromion. Divides posterior scapula into 2 distinct depressions.

Crest of spine
Uppermost portion of the scapular spine.

What are the 2 depression on the posterior surface of the scapula for?
Muscle attachment

Supraspinous fossa
Above the spine

Infraspinous fossa
Below the spine

What is the Y appearance of a lateral scapula formed by?
Spine, coracoid, and superimposed borders

What is the most common type of dislocation of the shoulder?
Anterior

What type of joint is the shoulder?
Spheroidal/ball and socket

What type of joint is the AC/SC joint?
Plane/gliding

What is the most frequently dislocated joint in the body?
Shoulder

What is the large, rounded structure at the proximal end of the humerus? Head of the humerus What is the raised area at the proximal end of the humerus? Greater tubercle of the humerus WE WILL WRITE A CUSTOM ESSAY …

Raised area on the lateral surface of the humerus to which the deltoid muscles attach Deltoid tuberosity Arm bone Humerus WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my sample Bones …

Name the parts of the Radius, starting most proximal Proximal: radial head, radial neck, radial tuberosity, Medial:radial shaft Distal: ulnar notch and styloid process of the radius Name the parts of the Ulna, starting most proximal. Proximal: olecranon process, trochlear …

deltoid tuberosity raised area on the lateral surface of humerus to which deltoid muscle attaches humerus arm bone WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my sample clavicle and scapula …

Appendicular skeleton Composed of 126 bones of the upper and lower limbs.Upper limbs attached to the axial skeleton by the pectoral girdle and the lower limbs are attached by the pelvic girdle Scapula Triangles shaped that serves as a site …

What is the name of the joint formed by the clavicle and manubrium? Sternoclavicular joint What is the name of the joint formed by the clavicle and part of the scapula? Acromioclavicular joint WE WILL WRITE A CUSTOM ESSAY SAMPLE …

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