Anatomy Unit 2

1

Jugular Notch

2

Manubrium

3

Clavicular Notch (for articulation with Clavicle)

4

Sternal Angle

5

Body

6

Xiphoid Process

7

Facets for articulation with ribs

Rib 2 articulation occurs at what 2 parts of the sternum

Manubrium & Body (at sternal angle)

Rib 7 articulation occurs at what 2 parts of the sternum

Body & Xiphoid Process

What are “true” ribs; How many are there

ribs that attach directly to the sternum; 7

what are “false” ribs; Which are they; How many are considered “floating” ribs

ribs that don’t directly attached to the sternum; 8-12; two are floating (11 & 12)

what do ribs 8-10 attach to

costal cartilage which then attaches to the sternum

how many ribs articulate with the thoracic vertebrae

all of the (12 pairs - 24 total)

A

Acromial end of Clavicle

D

Sternal end of Clavicle

1

Suprascapular Notch

What ligament goes across 1

Superior Transverse Scapular Ligament

What 2 structures go through 1

Suprascapular n. & Suprascapular a.

2

Superior Angle

What muscle attaches to 2

Levator Scapulae m.

3

Medial Border of Scapula

What muscles attach to 3

Rhomboid Major, Rhomboid Minor, Serratus Anterior mm.

4

Lateral Border of Scapula

What muscles attach to 4

Teres Minor, superior part of Teres Major, LH of Triceps Brachii mm.

5

Coracoid Process

What muscles attach to 5

Coracobrachialis, SH of Biceps Brachii, Pectoralis Minor mm.

6

Acromion

What muscles attach to 6

Trapezius & Deltoid mm.

7

Glenoid Fossa

8

Inferior Angle

What muscles attach to 8

Inferior part of Teres Major, Serratus Anterior, fibers of Latissimus Dorsi mm.

9

Subscapular Fossa

What attaches to 9

Subscapularis m.

10

Superior Border

11

Spine of Scapula

12

Infraspinous Fossa

What attaches to 12

Infraspinatus m.

13

Glenoid Fossa

14

Supraspinous Fossa

What attaches to 14

Supraspinatus m.

What is this feature

Supraglenoid tubercle

What attaches to this feature

Long Head of Biceps Brachii tendon

What is this feature

Infraglenoid tubercle

What attaches to this feature

Long Head of the Triceps Brachii Tendon

1

Radial Groove

What goes through 1

Radial n.

2

Greater Tubercle

What muscles attach at 2

Supraspinatus, Infraspinatus, Teres Minor mm.

3

Intertubercular Sulcus

What goes through 3

Long Head of Biceps Brachii tendon

5

Surgical Neck

6

Head of Humerus

7

Deltoid Tuberosity

What attaches at 7

Deltoid mm.

11

Anatomical Neck

12

Lesser Tubercle

What attaches at 12

Subscapularis m.

What ligament connects the Greater and Lesser Tubercles of the Humerus

Transverse Humeral lig.

A

Medial Lip of Intertubercular Sulcus

What attaches at A

Latissimus Dorsi & Teres Major mm.

B

Lateral Lip of Intertubercular Sulcus

What attaches at B

Pectoralis Major m.

1

Sternoclavicular joint

2

Acromioclavicular joint

3

Glenohumeral joint

4

Scapulothoracic joint

What is important about the Scapulothoracic joint

it is a “pseudo” joint

1

Interclavicular lig.

2

Anterior Sternoclavicular lig.

3

Posterior Sternoclavicular lig.

4

Costoclavicular lig.

1

Acromioclavicular lig.

2

Coracoacromial lig.

3B

Trapezoid lig.

3B

Conoid lig.

3

Coracoclavicular lig.

4

Coracohumeral lig.

5

Transverse Humeral lig.

6

Superior Glenohumeral lig.

7

Middle Glenohumeral lig.

8

Inferior Glenohumeral lig.

9

Redundant Capsule

A

Superior Transverse Scapular lig.

1

External Intercostal m.

2

Internal Intercostal m.

3

Innermost Intercostal m.

1 - Action

Active during Inspiration

2 - Action

Active during Expiration

3 - Action

Active during Expiration

All of these muscles are innervated by

intercostal nn.

What muscles

Subcostal mm.

Muscle Action

May depress ribs

How many intercostal spaces do subcostal muscles cross

2-3 intercostal spaces

What muscle

Transversus Thoracis m.

Muscle action

depress costal cartilages

A

Trapezius

A - Origin

External Occipital Protuberance, Nuchal Ligament, Spinous Processes C7-T12

A - Insertion

Clavicle, Acromion, Spine of Scapula

A - Action

Elevate/Retract/Depress Scapula & Rotate scapula during Abduction of humerus

A - Innervation

CN XI - Spinal Accessory n.