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SCT2 Anatomy Quiz 5 Stuff > Thoracic Diaphragm > Flashcards

Flashcards in Thoracic Diaphragm Deck (11)
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1
Q

The thoracic diaphragm is the principle muscle of _____________.

A

RESPIRATION

2
Q

What does the dome-shaped thoracic diaphragm divide?

A

THORACIC CAVITY
+
ABDOMINAL CAVITY

3
Q

The top of the diaphragm dome sits at approximately the ____TH intercostal space, during expiration.

A

4TH

4
Q

The top of the diaphragm dome sits at approximately the ____TH intercostal space, during inspiration.

A

6TH

down 5-10 cm

5
Q

Which side of the diaphragm dome sits higher than the other?

A

RIGHT SIDE HIGHER

6
Q

The diaphragm is divided into a muscular component and a _____________ component.

A

TENDINOUS

7
Q

Name the 5 inferior attachments of the thoracic diaphragm?

A
  1. POSTERIOR SURFACE OF XIPHOID
  2. INTERNAL SURFACES AND CC OF LOWER 6 RIBS
  3. UPPER LUMBAR VERTEBRAE VIA 2 CRURA
  4. MEDIAL ARCUATE LIGAMENTS
  5. LATERAL ARCUATE LIGAMENTS
8
Q

The muscular fibers of the diaphragm converge radially into a strong aponeurotic tendon, named what?

A

CENTRAL TENDON

9
Q

The central tendon has a ____-__________ appearance, with a central, left and right ___________.

A

C-SHAPED
+
LEAFLET

10
Q

With contraction, the action of the diaphragm is to move ____________, flattening.

A

INFERIORLY

11
Q

As the diaphragm contracts and moves inferiorly, what happens to it?

A

FLATTENS