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52 Cards in this Set
- Front
- Back
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True Ribs
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1-7
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False Ribs
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8-10
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Floating Ribs
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11, 12
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secondary cartilaginous joint; bones united by fibrocartilage
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Symphysis
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Example of Symphysis
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Sternal Angle (Manubriosternal Joint)
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primary cartilaginous joint; bones united by hyaline cartilage – usually temporary and then converts to bone
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Synchonrosis
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Example of Synchondrosis
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Xiphisternal junction
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Vertebrae level of sternal angle
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T4-T5
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Divides superior and inferior mediastinum
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Sternal angle
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Articulates with vertebral bodies
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Facets
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Articulates with transverse process of vertebrae
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Tubercle of rib (plane synovial joints)
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Weakest part of the rib
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anterior to its angle; middle ribs are most frequently fractured
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Position of the intercostal VAN
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Costal Groove
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Intercostal muscles superficial to deep
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External, Internal, Innermost
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Where do the neurovascular components of the intercostal muscles course?
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Between the inner two layers (Internal and Innermost)
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Function of External intercostals
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Elevate ribs during forced inspiration
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Function of Internal intercostals
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Depress ribs during forced expiration
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Where do the internal intercostals turn into a membrane?
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posterior
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An > AP
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Pump handle movement
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Middle part of the ribs move laterally when they are elevated, > transverse diameter
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Bucket Handle
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> vertical dimension
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Contraction of the diaphragm
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What does the internal thoracic artery terminate as?
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Musculophrenic and Superior Epigastric arteries
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What is the internal thoracic artery a branch of?
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The Subclavian artery
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What is the anterior intercostal artery a branch of?
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Internal thoracic/subclavian
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Anterior intercostal arteries are found where?
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2 for each space, spaces 1-6
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Gives off intercostal arteries that supply spaces 7-9
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musculophrenic artery
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What is the posterior intercostal a branch of?
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thoracic aorta
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What form the intercostal nerves?
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Ventral rami of T1-12
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Ventral ramus of the 12th nerve
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Subcostal nerve
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Conveys preganglionic sympathetic fibers to the ganglion
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White ramus
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Conveys postganglionic sympathetic fibers away from the ganglion and into the intercostal nerve
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Gray ramus
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Motor to intercostal muscles
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Intercostal nerve (anterior and lateral cutaneous branch)
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What are the intercostal nerves sensory to?
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skin and pleura
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What nerves continue to the abdoment and supply abdominal muscles, skin and peritoneum?
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7-12
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AKA epicardium
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serous visceral pericardium
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T4
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nipple
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T10
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Umbilicus
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Where do you find the inferior angle of scapula?
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7th rib
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How do ribs 1-7 articulate with the sternum?
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costal cartilage
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Manubriosternal joint
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symphysis; united by fibrocartilage
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Xiphisternal junction
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synchondrosis; hyaline cartilage that is usually temporary
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Part of the rib that articulates with the tip of the corresponding transverse process of vertebrae
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tubercle
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Represented by an intercostal membrane ANTERIORLY
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External intercostals
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Replaced by an intercostal membrane POSTERIORLY
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Internal intercostals
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What does the internal thoracic artery terminate as?
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Musculophrenic and superior epigastric
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What is the internal thoracic artery a branch of?
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Subclavian
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How many anterior intercostal arteries per spaces 1-6?
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2
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Gives off intercostal arteries that supply spaces 7-9
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Musculophrenic
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Artery that supplies diaphragm and anterior abdominal wall
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Superior epigastric
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What are the posterior intercostal arteries branches of?
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aorta
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What form the intercostal nerves?
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Ventral rami of T1-12
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Which intercostal nerves continue to the abdomen and supply the ab muscles, skin and peritoneum?
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T7-12
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