Surface Anatomy of Thorax

Question 1

Borders of the Anterior Triangle of Neck?

Answer 1

Mandible
Midline
SCM

Question 2

Borders of Posterior Triangle?

Answer 2

SCM
Trapezius
Clavicle

Question 3

Answer 3

Question 4

Answer 4

Question 5

For cricothyroidotomy, palpate ________ then palpate inferiorly until the _________ is palpated

Answer 5

For cricothyroidotomy, palpate laryngeal prominence then palpate inferiorly until the cricothyroid ligament is palpated

Question 6

__________: used to palpate out 2,3, and 4th intercostal space

Answer 6

Angle of Louis: used to palpate out 2,3, and 4th intercostal space

Question 7

Answer 7

Question 8

Subcostal Angle is the angle formed by the ______costal cartilages as they approach the ________

Answer 8

Subcostal Angle is the angle formed by the 7-10th costal cartilages as they approach the xiphoid process

Question 9

Venous Angle = union of _________ + ___________

Answer 9

Venous Angle = union of internal jugular + subclavian vein

Each venous angle located behind sternoclavicular joints

Question 10

Where does this structure reside and what occurs at CC1, CC2, CC3?

Answer 10

Superior Vena Cava resides behind Costal Cartilage 1-3

At CC1, SVC formed by union of L+R Braciocephalic veins

At CC2, Azygous vein drains into SVC

At CC3, SVC enters right atrium

Question 11

Where to asultate heart valves?

Answer 11

Aortic Valve- 2nd Right intercostal space

Pulmonary Valve- 2nd Left intercostal space

Tricuspid Valve - 4th Left intercostal space

Mitral Valve- 5th Left intercostal space, Midclavicular line

Question 12

Diaphram Position relative to intercostals during expiration?

Answer 12

During expiration:
Right dome resides in 4th intercostal space
Left dome resides at level of 5th rib or 5th intercostal space

Question 13

Shape of Diaphram?

Answer 13

Inverted J-shape

Posterioinferior margin T12
Anteroinferior margin is costal margin

Question 14

Borders of Triangle of Safety?

Answer 14

1 Posterior Axillary Fold
2 Anterior Axillary Fold
3 Sternal Angle
4 Borders of the Safety Triangle
5 Xiphoid Process

Question 15

Significance of this sapce?

Answer 15

The Triangle of Auscultation

Borders:
Inferior border of Trapezius
Superior border of Latissimus Dorsi
Medial border of Scapula

The absence of musculature in this triangular window allow respiratory sounds to be heard more clearly on auscultation