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Thoracic Wall
N/A
70
Anatomy
Graduate
11/19/2011

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Cards

Term
What is the fucntion of the thoracic inlet?
Definition
Allows communication with structures in the neck
Term
What is the function of the thoracic outlet?
Definition
Allows communication with abdominal structures, mostly closed by diaphragm
Term
How many vertebrae in the thoracic skeleton?
Definition
Twelve
Term
How many pairs of ribs are there in the thoracic skeleton?
Definition
Twelve
Term
What does the manubrium articulate with?
Definition
Clavicle, body of sternum, 1st rib, 1/2 of the 2nd Rib
Term
What part of the thoracic skeleton is a common site for bone marrow biopsy?
Definition
Sternum
Term
What vertebrae does the sternal angle go through?
Definition
T4/T5
Term
The superior angle is the superior marker of what structure(s)?
Definition
Pericardium, Pulmonary trunk
Term
What marks the level of the beginning and end of the aorta arch?
Definition
The Sternal Angle
Term
At what level does the trachea bifurcate into left and right bronchi?
Definition
The Sternal Angle
Term
The sternal angle marks what on the sternum?
Definition
Site of articulation with 2nd rib
Term
The xiphoid process marks thes superior boarder of what?
Definition
Liver
Term
The central tendon of the diaphragm is level with what structure?
Definition
Xiphoid Process
Term
The xiphoid process should be level with which vertebrae?
Definition
T9
Term
The intercostal artery and vein travel within which structure?
Definition
Costal Groove
Term
Which ribs are true ribs?
Definition
Ribs 1-7
Term
Which ribs are false ribs?
Definition
Ribs 8-10
Term
Which ribs are floating ribs?
Definition
Ribs 11-12
Term
What is characteristic of true ribs?
Definition
Costal cartilage articulates directly with sternum
Term
What is characteristic of false ribs?
Definition
Attaches to sternum indirectly via the costal cartilage of the rib above
Term
What is characteristic of floating ribs?
Definition
Does not connect with the sternum
Term
Which rib is the broadest and the shortest and features a scalene tubercle?
Definition
Rib 1
Term
What is the function of the scalene tubercle?
Definition
Insertion of the anterior scalene muscle
Term
Where is the tubercle for serratus anterior located?
Definition
Rib 2
Term
Which ribs have 2 vertebral articular facets?
Definition
Ribs 2-9
Term
Which ribs are present in only 1% of the population?
Definition
Cervical ribs
Term
Compression or stretching of the inferior trunk of the brachial plexus or the subclavian artery/vein may cause what?
Definition
Thoracic Outlet Syndrome
Term
What structures may be related to thoracic outlet syndrome?
Definition
Cervical Ribs
Term
The 2 demifacets on thoracic vertebrae articulate with what structures?
Definition
Heads of Ribs
Term
The tubercle of the ribs articulates with what structure?
Definition
Transverse costal facet on thoracic vertebrae
Term
Which vertebrae(s) contains a costal facet instead of a demifacet?
Definition
T1
Term
Which thoracic vertebrae lack transverse costal facets?
Definition
11 and 12
Term
A rib articulating with the superior demifacet of the vertebrae of the same number and the inferior demifacet of the vertebrae above it forms what joint?
Definition
Joint of head of rib
Term
The tubercle of a rib articulating with the transverse process of the same numbered vertebra forms what joint?
Definition
Costotransverse Joint
Term
Which is the only rib with a fibrocartilaginous joint known as a sychondrosis?
Definition
Rib 1
Term
Ribs 7-10 articulate with the cartilage above and are known as 
Definition
Interchondral joints
Term
Inflammation of the costochondral or sternocostal joints that is a common source of chest pain is known as what?
Definition
Costochondritis 
Term
Costochondritis may be mistaken for what?
Definition
Myocardial Infarction 
Term
Intercostal spaces are numbered according to which rib?
Definition
Superior Rib
Term
What is the orientation of external intercostal fibers?
Definition
Forward and down
Term
What is the orientation of internal intercostal fibers
Definition
Backward and Down
Term
What innervates the 3 layers of interocstal muscles?
Definition
T12 intercostal nerve
Term
What are the contents of the intercostal space, superiorly to inferiorly?
Definition
VAN = posterior intervostal Vein/Artery, intercostal Nerve
Term
What is the source of the Anterior Intercostal Artery
Definition
Internal Thoracic Artery
Term
VAN, the contents of the intercostal space, lies between what?
Definition
Internal and Innermost Intercostal Muscles
Term
What contained in the intercostal space is often not protected by the costal groove?
Definition
Intercostal Nerve
Term
Which rami supply the intercostal nerves?
Definition
Anterior Rami of Thoracic Spinal Nerve
Term
What condition may involve intercostal nerves leading to red vesicles in the dermatome supplied by the involved nerve?
Definition
Herpes zoster (aka Shingles)
Term
Posterior Intercostal arteries 3-11 and Subcostal Arteries are supplied by what?
Definition
Thoracic Aorta
Term
The internal thoracic and supreme intercostal arteries are supplied by what?
Definition
Subclavian Artery
Term
The axillary artieries are supplied by what?
Definition
Superior and Lateral Thoracic Arteries
Term
What structures travel alongside the posterior intercostal arteries?
Definition
Posterior Rami of Spinal Nerves and Lateral Cutaneous Branches of the Intercostal Nerves
Term
The Anterior Intercostal Arteries of 1-6 arise from what?
Definition
Internal Thoracic Arteries
Term
The muscolophrenic arteries supply what?
Definition
Anterior Intercostal Arteries 7-9
Term
Which intercostal spaces lack anterior intercostal arteries?
Definition
10-11
Term
Which intercostal arteries/veins anastomose?
Definition
Anterior and Posterior
Term
The Internal Thoracic Arteries arise from the root of the neck of the inferior surface of what?
Definition
Subclavian Arteries
Term
When do the internal thoracic arteries terminate?
Definition
6th intercostal space
Term
What do the internal thoracic arteries divide into?
Definition
Superior epigastric and Muscolophrenic arteries
Term
What do the posterior intercostal veins drain into?
Definition
Azygos System
Term
What do the anterior intercostal veins drain into?
Definition
Internal Thoracic Veins
Term
What separates the breast from the deep fascia?
Definition
Retromammary Space
Term
What other space other than the chest does the breast usually extend into?
Definition
The Axilla
Term
Name the blood supply of the breast
Definition
Internal thoracic, lateral thoracic, and posterior intercostal arteries
Term
Where might cancer cells be carried to by tributaries of the posterior intercostal veins?
Definition
Vertebral Venus Plexus
Term
60-75% of lymph from the breast drains into what?
Definition
Axillary Nodes
Term
What ranks as the 2nd most common cause of cancer deaths among women?
Definition
Breast Cancer
Term
What are risk factors for breast cancer?
Definition
Increased age, family history, long menstrual cycle, late menopause, obesity, oral contraceptive use, alcohol abuse
Term
How often should a self breast exam be performed?
Definition
Monthly, avoiding menstrual period 
Term
Which disease has an increased prevalence of gynecomastia?
Definition
Klinefelter Syndrome (XXY Trisomy)
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