Diaphragm ( Handout ) Flashcards
Double-domed and serves as a musculocutaneous partition
Diaphragm
Separates the thoracic and abdominal cavities
Diaphragm
Parts of the diaphragm
Muscular part and
Central tendon
Serves as the chief muscle for inspiration
Diaphragm
Which is higher,
Right dome or Left dome?
Right dome
Superior surface of diaphragm
A. Convex
B. Concave
A. Convex
Inferior surface of the diaphragm
A. Convex
B. Concave
B. Concave
Aponeurotic tendon of all muscular fibers of the diaphragm that lies near the center of the diaphragm
Central tendon
The central tendon resembles?
Cloverleaf
- with 3 leaves
What perforates the central tendon?
Caval opening
The muscular part of the diaphragm is divided into ___ parts based on peripheral attachments
3 parts
What are the three parts of the muscular part of the diaphragm?
Sternal
Costal
Lumbar
Muscular part of the diaphragm: Has 2 muscular slips that attach to the posterior xiphoid process A. Sternal B. Costal C. Lumbar
A. Sternal
Where does the muscular slips of the sternal part of the diaphragm attaches to?
Xiphoid process
Muscular part of the diaphragm: Has wide muscular slips and forms the R & L domes A. Sternal B. Costal C. Lumbar
B. Costal
Muscular part of the diaphragm: Attaches to the internal surfaces of the inferior six costal cartilages and ribs A. Sternal B. Costal C. Lumbar
B. Costal
Muscular part of the diaphragm: Arises from the medial and lateral arcuate ligaments and 3 superior lumbar vertebrae A. Sternal B. Costal C. Lumbar
C. Lumbar
Muscular part of the diaphragm: Forms the R & L crura A. Sternal B. Costal C. Lumbar
C. Lumbar
Musculotendinous bundles of the diaphragm
Crura
- right and left
The crura arises from what structures
Superior 3 lumbar vertebrae
Anterior longitudinal ligament
IV Discs
Larger and longer and forms the R & L sides of the esophageal hiatus
A. Right crura
B. Left crura
A. Right crura
Arises from the first 3 or 4 lumbar vertebra
A. Right crura
B. Left crura
A. Right crura
The right crura arises from?
First 3 or 4 lumbar vertebra
Lies to the left of midline
A. Right crura
B. Left crura
B. Left crura
Arise from the first 2 or 3 Lumbar vertebra
A. Right crura
B. Left crura
B. Left crura
The Left crura arises from?
First 2 or 3 lumbar vertebra
The lateral and medial arcuate ligaments are also known as?
Lumbosacral arches
What are the two impt ligaments also known as the lumbosacral arches
Lateral and medial arcuate ligment
Upper thickened border of the psoas fascia
A. Medial arcuate ligament
B. Lateral arcuate ligament
A. Medial
Lies between the body of the 2nd lumbar ad tip of the transverse process of the 1st lumbar
A. Medial arcuate ligament
B. Lateral arcuate ligament
A. Medial
Extends from the tip of the transverse process of the 1st lumbar vertebra to the lower border of the 12th rib
A. Medial arcuate ligament
B. Lateral arcuate ligament
B. Lateral
What are the three diaphragmatic apertures?
Caval opening
Esophageal hiatus
Aortic hiatus
Opening of the central tendon
A. Caval opening
B. Esophageal hiatus
C. Aortic hiatus
A. Caval Opening
Located in the muscle of the right crus
A. Caval opening
B. Esophageal hiatus
C. Aortic hiatus
B. Esophageal Hiatus
Opening posterior to the diaphragm
A. Caval opening
B. Esophageal hiatus
C. Aortic hiatus
C. Aortic Hiatus
Lies anterior to the body of the 12th thoracic vertebra between the crura
A. Caval opening
B. Esophageal hiatus
C. Aortic hiatus
C. Aortic hiatus
Transmits the following:
IVC, terminal branches of phrenic nerve, lymph vessels
A. Caval opening
B. Esophageal hiatus
C. Aortic hiatus
A. Caval opening
Transmits the following:
Esophagus, ante and poste vagal trunks, esophageal branches of the L gastric vessels, lymph vessels
A. Caval opening
B. Esophageal hiatus
C. Aortic hiatus
B. Esophageal hiatus
Transmits the following:
Ante and poste vagal trunks and lymph vessels
A. Caval opening
B. Esophageal hiatus
C. Aortic hiatus
B. Esophageal hiatus
Transmits the following:
Aorta, thoracic duct, azygos vein, hemiazygos vein
A. Caval opening
B. Esophageal hiatus
C. Aortic hiatus
C. Aortic hiatus
Located between the sternal and costal attachments of the diaphragm
Sternocostal triangle
The sternocostal triangle transmits what structures?
Superior epigastric vessels
Lymphatic vessels
Blood supply of the SUPERIOR surface of the diaphragm
Pericardiacophrenic a
Musculophrenic a
Superior phrenic a
Blood supply of the INFERIOR surface of the diaphragm
Inferior phrenic a
Venous drainage of the SUPERIOR surface of the diaphragm
Same as blood supply
Pericardiacophrenic v
Musculophrenic v
Superior phrenic v
Venous drainage of the INFERIOR surface of the diaphragm
Same as blood supply
R and L inferior phrenic v
Motor innervation of the diaphragm
R and L phrenic nerves (C3-C5)
Sensory nerve supply of the CENTRAL diaphragm
Phrenic nerves
Sensory nerve supply of the PERIPHERAL diaphragm
Intercostal and subcostal nerves
Condition wherein there is postero-lateral defect on the left diaphragm with life-threatening breathing difficulties
Congenital Diaphragmatic Hernia
Protrusion of the stomach into the thorax through the esophageal hiatus
Hiatal hernia