M. Cole Anatomy at University Of Missouri - Kansas City | Flashcards & Summaries

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mediastinum

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central compartment

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thoracic cavity

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  • shape of dome-birdcage or truncated cone
  • narrowest superiorly with the circumference increasing inferiorly
  • floor = respiratory diaphragm which is convex superiorly
  • relatively thin-walled
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functions of the thorax

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  1. protect vital thoracic/abdominal organs for external forces
  2. resist the negative internal pressure created by the elastic recoil of the lungs
  3. provide attachments for and support the weight of the upper limbs
  4. provide origin for some upper limb muscles and attachments for the muscles of the abdomen, neck, back and respiration
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thoracic cavity is ------- superiorly where it communicates with the neck

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completely open superiorly

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floor, abdominal diaphragm forms 

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an inferior wall, but has several holes to allow passage of structures between the thoracic and abdominal cavities

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posterior wall of thoracic cavity

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  • vertebrae and posterior regions of the ribs
  • intercostal and subcostal muscles
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lateral walls of the thoracic cavity

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  • composed of ribs
  • intercostal muscles
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anterior wall of the thoracic cavity

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  • ribs, costal cartilages, sternum
  • intercostal muscles and transversus thoracis muscle
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the vertebral bodies of the thoracic wall 

(posterior)

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bodies of 1st to 12th thoracic vertebrae

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in older persons the manubriosternal and xiphisternal joints can 

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fuse and become a synostosis

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fracture of the sternum

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  • severe blunt trauma to chest like vehicular, uncommon
    • typically break into several pieces, comminuted
  • most common site = manubriosternal joint (where manubrium meets body of the sternum)
  • usually not displace because of the pectoralis muscle
  • high mortality rate (25-45%), result from heart and lung injuries, pieces can be pushed backwards and tear visceral
  • X-ray, CT, ultrasound
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thorax

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part of the body of a mammal between the neck and the abdomen

  • including the cavity enclosed by the ribs, sternum, and dorsal vertebrae, and containing the chief organs of circulation and respiration
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  • 5692 Karteikarten
  • 38 Studierende
  • 0 Lernmaterialien

Beispielhafte Karteikarten für deinen M. Cole Anatomy Kurs an der University of Missouri - Kansas City - von Kommilitonen auf StudySmarter erstellt!

Q:

mediastinum

A:

central compartment

Q:

thoracic cavity

A:
  • shape of dome-birdcage or truncated cone
  • narrowest superiorly with the circumference increasing inferiorly
  • floor = respiratory diaphragm which is convex superiorly
  • relatively thin-walled
Q:

functions of the thorax

A:
  1. protect vital thoracic/abdominal organs for external forces
  2. resist the negative internal pressure created by the elastic recoil of the lungs
  3. provide attachments for and support the weight of the upper limbs
  4. provide origin for some upper limb muscles and attachments for the muscles of the abdomen, neck, back and respiration
Q:

thoracic cavity is ------- superiorly where it communicates with the neck

A:

completely open superiorly

Q:

floor, abdominal diaphragm forms 

A:

an inferior wall, but has several holes to allow passage of structures between the thoracic and abdominal cavities

Mehr Karteikarten anzeigen
Q:

posterior wall of thoracic cavity

A:
  • vertebrae and posterior regions of the ribs
  • intercostal and subcostal muscles
Q:

lateral walls of the thoracic cavity

A:
  • composed of ribs
  • intercostal muscles
Q:

anterior wall of the thoracic cavity

A:
  • ribs, costal cartilages, sternum
  • intercostal muscles and transversus thoracis muscle
Q:

the vertebral bodies of the thoracic wall 

(posterior)

A:

bodies of 1st to 12th thoracic vertebrae

Q:

in older persons the manubriosternal and xiphisternal joints can 

A:

fuse and become a synostosis

Q:

fracture of the sternum

A:
  • severe blunt trauma to chest like vehicular, uncommon
    • typically break into several pieces, comminuted
  • most common site = manubriosternal joint (where manubrium meets body of the sternum)
  • usually not displace because of the pectoralis muscle
  • high mortality rate (25-45%), result from heart and lung injuries, pieces can be pushed backwards and tear visceral
  • X-ray, CT, ultrasound
Q:

thorax

A:

part of the body of a mammal between the neck and the abdomen

  • including the cavity enclosed by the ribs, sternum, and dorsal vertebrae, and containing the chief organs of circulation and respiration
M. Cole Anatomy

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