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Anatomy 2 > Thoracic Cavity > Flashcards

Thoracic Cavity Flashcards

1
Q

Where in the thoracic cavity are RBCs formed?

A

Ribs and sternum

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2
Q

Where is the greatest width of the thoracic cavity?

A

8th to 9th rib level

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3
Q

Site of communiation between the thoracic cavity and root of the neck

A

Thoracic inlet

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4
Q

Compression of the vessels crossing between the first rib and clavicle

A

Thoracic inlet syndrome

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5
Q

Site of communcation between the thoracic cavity and the abdomen

A

Thoracic outlet

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6
Q

Is the thoracic cavity an open or closed system?

A

Closed

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7
Q

Formed by the medial borders of costal cartialges of ribs 7-10

A

Costal margin

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8
Q

Where the costal margins converge at the xiphisternal joint

A

Infrasternal angle

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9
Q

Classification of ribs 1-7

A

True ribs: attach directly to sternum by costal cartilages

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10
Q

Classification of ribs 8-10

A

False ribs: cartialges indirectly attach to the sternum thru costal cartilage of rib 7

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11
Q

Classification of ribs 11 and 12

A

Do not attachto the sternum and end in the abdominal musculature

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12
Q

Where the transverse process of the vertebra of the same number connects with the rib at the same level

A

Articular tubercle

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13
Q

Where the lateral costotransverse ligament attaches

A

Non-articular part of the rib tubercle

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14
Q

Concave, internal aspect of the inferior border of the rib that assists in protection of the intercostal neurovascular bundle

A

Costal groove

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15
Q

Broadest, shortest, most sharply curved rib

A

Rib 1. has no costal groove. Superior surface has 2 shallow grooves (separated by scalene tubercle) for subclavian vein and artery

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16
Q

Which rib has a tubercle at the middle of its external surface for the attachment of the serratus anterior?

A

Rib 2. Has facets that articulates with T1 and T2

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17
Q

Which ribs only have the articular facet on the head to articulate with the vertebral body?

A

Ribs 10 and 11

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18
Q

Shortest and thinnest rib

A

Rib 12

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19
Q

Attaches the ribs to the sternum

A

Costal cartilages

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20
Q

Widest and thickest part of the sternum

A

Manubrium

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21
Q

What makes up the body of the sternum?

A

4 central sternebrae that fuse in young adulthood

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22
Q

Which ribs does the sternum articulate with?

A

2 to 6

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23
Q

When does the xiphisternal joint typically ossify

A

5th decade of life

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24
Q

What vertebrae level is the manubrium at?

A

T3 and T4

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25
Q

What ribs are at the sternal angle?

A

2nd pair of costal cartilages

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26
Q

What rib is at the spin of the scapula?

A

4th

27
Q

What rib is the inferior angle of the scapula at?

A

8th

28
Q

Ligament from crest of head of the rib to the IVD

A

Intra-articular

29
Q

Ligament that passes from the enterior margin of the head of the rib to the sides of the bodies of 2 vertebrae and the IVD between them

A

Radiate ligament

30
Q

The articulation b/t the tubercle of the rib and the transverse costal facet of the vertebra with the same number

A

Costotransverse joint

31
Q

Ligament that connects the posterior part of the rib neck to the anterior surface of the adjacent transverse process

A

Costotransverse ligament

32
Q

Ligament that connects the tubercle of the rib to the tip of the transverse process

A

Lateral costotransverse ligament

33
Q

Ligament that connects the crest on the neck of the rib to the caudal border of the trnsverse process above

A

Superior costotransverse ligament

34
Q

What is the most important muscle of respiration?

A

diaphragm

35
Q

Boyle’s law

A

volume and pressure have an inverse relationship

36
Q

What keeps the lungs “stuck” to the diaphragm and thoracic wall?

A

Slightly negative intrapleural pressure

37
Q

Muscle that attaches to the inferior border of the rib above and the superior border of the rib below, creating an oblique line TOWARDS the sternum

A

External intercostal muscles

38
Q

Aponeurosis that is an anterior continuation of the external intercostal muscles

A

External intercostal membrane

39
Q

Muscles that runs from the inferior border to the superior border of the ribs it is b/t, creating an inferoposterior oblique

A

Internal intercostal muscle

40
Q

Deepest intercostal muscle

A

Innermost intercostal muscle

41
Q

What encompasses the intercostal nerves and vessels

A

Internal and innermost intercostal muscles

42
Q

Posterior muscles inside the toracic cage, runs from one rib to the one 2-3 below it

A

Subcostal muscles

43
Q

Anterior muscles inside the toracic cage that is continuous with the transverse abdominis

A

Transversus thoracis

44
Q

Quite respirations

A

Tidal breathing

45
Q

Nerve branch that supplies the skin over the lateral and anterolateral thoracic wall

A

Lateral cutaneous braches (anterior and posterior)

46
Q

Nerve that is just lateral to the sternum, innervates the anterior thoracic wall and anterior abdomen

A

Anterior cutaneous branches

47
Q

Where do the 1and 2 posterior intercostal arteries arise from?

A

Supreme (superior) intercostal artery, from the costocervical truck of subclavian artery

48
Q

Where do the third thru eleventh posterior intercostal arteries arise from?

A

Paired brnaches from the thoracic aorta

49
Q

Arises in the root of the neck from the inferior surface of the 1st part of the subclavian artery

A

Internal thoracic artery

50
Q

Course of the internal thoracic artery

A

Posterior to the clavical and 1st costal cartilage, posterior to the internal intercostal muscles and anterior to the transversus thoracis, terminating at the 6th intercostal space (superior epigastric and musculophrenic arteries)

51
Q

Branches of the internal thoracic artery

A

Pericardiacophrenic, Superior epigastric, musculophrenic, anterior intercostal, Anterior perforating branches

52
Q

Branches from axillary artery

A

Supreme thoracic artery, pectoral branch of thoracoacromial artery, lateral thoracic artery, toracodorsal branch of subscapular artery

53
Q

Where do the posterior intercostal veins drain into?

A

Right: azygos into the SVC, left: hemiazygos veins

54
Q

Where do the anterior intercostal veins drain to?

A

Musculophrenic vein into the internal thoracic vein

55
Q

Where to the parasternal lymphatics of the thoracic wall drain to?

A

Medial aspect of the mammary gland and anterior thoracic wall

56
Q

Where do the intercostal lymphatics receive lymph from?

A

Posterior thoracic wall

57
Q

Extension of the superior outer quadrant of the breat that extends over the border of the pectoralis major into the axilla

A

Axillary tail

58
Q

What type of muscle allows for the nipples to become erect during nursing?

A

Circular smooth muscle

59
Q

Parts of the parenchyma of the breast

A

Lobes, lactiferous duct, lactiferous sinus

60
Q

Dilation of each lactiferous duct located just deep to the ducts opening on the nipple

A

Lactiferous sinus. Acts as a reservoir for milk

61
Q

Dense connective tissue components that surrounds the ductal tissue

A

Suspensory ligaments or Cooper’s ligaments

62
Q

What type of autonomic innervation does the breast receive?

A

Sympathetic

63
Q

Where does the majority of breast lymphatic drainage go?

A

Axillary lymph

64
Q

Most common sites of metastases from breast tissue?

A

Lymph nodes, bones, liver, brain

Anatomy 2 (10 decks)

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