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BMS 228 Anatomy > L1 Thorax > Flashcards

L1 Thorax Flashcards

1
Q

How many pairs of ribs are in the thorax

A

12

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2
Q

What do the ribs articulate around

A

the sternum and vertebrae

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3
Q

What is the manubrium

A

broad upper part of the sternum

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4
Q

Where is the jugular notch located

A

middle of the upper part of sternum

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5
Q

What is the sternal angle

A

junction between the manubrium and sternum

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6
Q

What is the sternal angle level with

A

thoracic vertebrae 4 and 5, rib 2, and the aortic arch

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7
Q

where does the trachea bifurcate

A

sternal angle

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8
Q

describe the processes of the vertebrae

A

3, one spinous, two transverse

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9
Q

Describe the relationship between the ribs and the vertebrae

A

12 thoracic vertebrae articulate with the ribs

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10
Q

Describe typical ribs

A

articulate with thoracic vertebrae by the tubercle and two articular facets

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11
Q

What does the costal cartilage join

A

ribs to sternum

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12
Q

What is the function of costal cartilage

A

allow flexibility for movement in breathing

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13
Q

What components sit in the costal groove

A

intercostal vein, artery and nerve

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14
Q

What is a benefit of the intercostal vein, artery and nerve sitting in the costal groove

A

protection

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15
Q

True or False - each typical rib articulates with two vertebrae

A

true

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16
Q

Name the atypical ribs

A

1, 2, 10, 11, and 12

17
Q

Which ribs are floating ribs

A

11, 12

18
Q

Why are ribs 1, 2 and 10 atypical

A

they articulate with only one vertebrae

19
Q

What is the function of the external intercostal muscles

A

expand the ribcage

20
Q

What is the function of the internal intercostal muscles

A

contract the ribcage

21
Q

Describe the relationship between the external and internal intercostal muscles

A

antagonistic

22
Q

Describe the blood supply to the thorax

A

subclavian artery, axillary artery and aorta

23
Q

Where does the second blood supply come from

A

descending aorta

BMS 228 Anatomy (9 decks)

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