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Thoracic Wall and Cavity
Medical School Gross Anatomy
45
Anatomy
Graduate
10/12/2011

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Cards

Term
what are the components of the sternum?
Definition
manubrium, body and xiphoid process
Term
How many ribs attach to the sternum directly (ie through its own, independent, costal cartilage)?
Definition
7
Term
What are floating ribs?
Definition
Last two ribs of the ribcage that do not connect to the sternum
Term
What is the costal angle?
Definition
Angle made by the dependent costal cartilages and the xiphoid process
Term
What is the costal margin?
Definition
margin formed by true ribs and floating ribs
Term
The nipple lies anterior to which intercostal space?
Definition
fourth
Term
What is the sternal angle?
Definition
The point in which the manubrium connects to the body of the sternum
Term
which rib attaches at the sternal angle?
Definition
second rib
Term
Where is the suprasternal notch?
Definition
superior to the manubrium of the sternum
Term
What is the most likely fracture point for a rib?
Definition
The angle, the point in which the rib changes shape from round to flat
Term
What is found in the costal groove?
Definition
Intercostal vein
intercostal artery
intercostal nerve
Term
What do you have to deaden two intercostal nerves when anesthetize an intercostal space?
Definition
intercostal nerves of a rib only enervate half of the space above and below each rib
Term
What innermost intercostal muscle lies behind the sternum?
Definition
Transverse Thoracis
Term
What innermost intercostal muscles lie in the midaxillary region?
Definition
Intima
Term
How is the subcostal muscle unique among the innermost intercostals?
Definition
The subcostal muscle will cross more than one costal space
Term
The external intercostal muscle will not reach which space of the thoracic wall?
Definition
anterior wall, the sternum
Term
Which intercostal muscle will not continue on the posterior side of the thoracic wall?
Definition
Internal intercostal
Term
what is the function of the dorsal rami of thoracic wall nerves?
Definition
dorsal cutaneous enervation
Term
What is the function of ventral rami of thoracic wall nerves?
Definition
muscular enervation as well as anterior and lateral cutaneous enervation (via lateral and anterior cutaneous nerve)
Term
Posterior intercostal arteries branch from where?
Definition
Aorta
Term
Anterior intercostal arteries branch from where?
Definition
Internal thoracic artery
Term
What muscle attaches to the first rib?
Definition
Anterior and middle scalenes
Term
What muscle attaches to the 12th rib?
Definition
Quadratus lumborum
Term
What muscle attaches to the second rib?
Definition
posterior scalene
Term
what fascia lines the inside of the thoracic cavity?
Definition
Endothoracic fascia
Term
What is the outermost fascial layer of the heart?
Definition
Fibrous Pericardium
Term
What is the middle fascial layer of the heart?
Definition
Serous Parietal Pericardium
Term
What is the innermost layer of fascia on the heart?
Definition
Serous Visceral Pericardium
Term
What two Pericardium are attached?
Definition
Fibrous and Serous Parietal Pericardium
Term
What is the Pericardial Cavity?
Definition
Space defined between the Serous Visceral Pericardium and the Serous Parietal Pericardium
Term
What is the enervation to the fibrous pericardium?
Definition
Phrenic Nerve
Term
Referred pain from the Phrenic nerve will be expressed via which cutaneous nerve?
Definition
Supraclavicular
Term
Visceral pain in the heart is referred to where?
Definition
upper thoracic region
Term
What is the outermost layer of the lung fascia (Pleura)?
Definition
Parietal Pleura
Term
What is the innermost pleural layer?
Definition
Visceral pleura
Term
Parietal pleura is attached to what fascial layer?
Definition
endothoracic fascial layer
Term
What is a pleurisy?
Definition
attachment of the visceral pleura to the parietal pleura
Term
What is the enervation of the mediastinal parietal pleura?
Definition
Phrenic nerve
Term
What is the enervation of the parietal pleura in the peripheral diaphragmatic area?
Definition
Intercostal nerves
Term
What is the enervation of the parietal pleura in the costal area of the thoracic wall?
Definition
Intercostal Nerves
Term
What is the central tendon?
Definition
Area of attachment for the fibrous pericardium and diaphragm
Term
What is the enervation to the diaphragmatic parietal pleura?
Definition
Phrenic
Term
What is the pleural cavity?
Definition
Space between visceral pleura and parietal pleura
Term
What is the principle behind percussion?
Definition
duller sounds associated with more mass. With this knowledge you can percuss for fluid in the lungs (or any other pathological consolidation of tissue)
Term
What is the principle behind resonance?
Definition
more solid a structure, the more vibrations will be transmitted (which is palpable). Fluid filled lungs will vibrate more. This is known as Tactile Fremitus
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