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Thorax > Bones Of Thorax- Introduction > Flashcards

Bones Of Thorax- Introduction Flashcards

1
Q

The upper end of the thorax continues with the root of the neck and is partly separated by the _________

A

Supra pleural membrane or sibsons fascia

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2
Q

The lower end is separated from the abdomen by the ________

A

Diaphragm

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3
Q

A cervical rib attached to the vetrebra C7 exerts pressure where?

A

On the lower trunk of BP

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4
Q

Superior aperture is also called the _________

A

Inlet of the thorax

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5
Q

The superior aperture is bounded
Anteriorly:
Posteriorly:
On each side:

A

Upper border of manubrum of sternum
Superior surface of body of T1
First rib w its cartilage

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6
Q

Structures passing through the inlet of thorax are….

A

Trachea, oesophagus, left ci.mon carotid artery, left subclavian artery, right and left superior intercostal arteries, right and left phrejic nerve, sternohyoid and sternothroid muscles

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7
Q

The inferior aperture us also called

A

Outlet of thorax

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8
Q

Outlet of thorax is bounded
Anteriorly, posteriorly and on each side by…..

A

Infra sternal angle
Inferior surface of body of T12
By the costal margin formed by cartilage of 7th to 12th ribs

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9
Q

….. large openings in diaphragm

A
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10
Q

Thoracic cavity and its wall have the shape pf a

A

Truncated cone

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11
Q

The thoracic cage w horizontal bars formed by the ______ and ________ is supported by _________ vertically

A

Ribs and costal cartilage
Sternum

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12
Q

Thorax includes primary organs of ________ and ___________ systems

A

Respiratory and cardiovascular

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13
Q

The thoracic cavity is divided into three spaces
1________ which houses _________
2…..
3……

A

The central compartment or mediastenum which houses thoracic viscera except from lungs
The left and right pulmonary cavities whuch houses the lungs

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14
Q

Majority if thoracic cavity is occupied by ______

A

The lungs

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15
Q

Function of dome shape of thoracic cage

A

Protects abdominal and thoracic organs from external force
Resist negative internal pressures generated by the elastic recoil of lungs and inspiratory movements
Provide attachment for and support weight of UL
Provide original. For some muscles of UL

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16
Q

Thoracic cage is an ______________ cage

A

Osseocartilagenous elastic cage

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17
Q

Formation of thoracic cage
Anteriorly
Posteriorly
On each side

A

Sternum
12 thoracic vertebrae and their intervertebral discs
12 ribs and their cartilages

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18
Q

What are the vetebra-sternal ribs

A

The upper 7 ribs

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19
Q

What are the vertebral chondral ribs and why

A

The 8,9 and 10th ribs
Because their costal cartilage joins the 7th costal cartilage

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20
Q

Costal cartilage of ____,____,_____ and ____ ribs form the costal margin

A

7th, 8th, 9th and 10th

21
Q

List the three types of ribs and their attachment

A
  1. True(vetebrosternal) ribs: (1-7) they attach directly tp the sternum through their coastal cartilage
  2. False (vetebrochondral) ribs : (8-10) they are connected to the cartilage of the ribs before them so their connection to sternum is always indirect
  3. Floating or free ribs : 11th and 12th ribs sometimes 10 ribs, they do not connect even indirectly to sternum and end in the posterior abdominal musculature
22
Q

_________, ___________ and __________ joints permits the movement of thoracic cage during breathing

A

Costo vertebral, manubriosternal and chondrosternal joints

23
Q

Gaps between each ribs are called __________

A

Intercostal spaces

24
Q

The first two and last three ribs have special features and are called

A

Atypical ribs

25
Q

The third ti 9th ribs are ____

A

Typical ribs

26
Q

The head of typical ribs has hoe many facets

A

Two

27
Q

Features of a typical ribs are

A

Head, neck, tubercle, body shaft, costal groove, costal angle

28
Q

The neck connects the head of the ribs to the body at level of ________

A

Tubercle

29
Q

The tubercle has a facet for articulation w ________ and a rough non articulating part that provides attachment for ____________

A

Transverse process of numerically corresponding vertebrae, costotransverse ligament

30
Q

The concave internal surface of the body of the ribs has a ________ parallel to the inferior border of the rib for protection and accommodation of __________ and _________

A

Costal groove, intercostal nerves and vessels

31
Q

_________ is where the shaft of the rib bends sharply forward

A

Costal angle

32
Q

The typical rib attaches to the _________ at crest of head and _________ at anterior of head

A

Intra articular ligament and radiate ligament

33
Q

Attachment to the neck of a typical ribs
Anteriorly
Posteriorly
Crest of neck

A

Costal pleura
Inferior costotransverse ligament
Superior costotransverse ligament

34
Q

Attachments on the shaft of a typical ribs
Costal angle:
Medial to the angle
Anterior to the angle

A

Thoracolumbar fascia and the lateral fibers of sacrospinalus muscle
The levator costae and sacrospinalis

35
Q

__________ arises from the floor of the costal groove

A

Internal intercostal muscle

36
Q

What rib is the broadest

A

1st rib

37
Q

How many facets does the head of atypical rib have and fir the attachment of what

A

2 for articulating w the T1 vetebrae only

38
Q

It has 2 transversely directed grooves crossing its superior surface and are separated by a __________

A

Scalene tubercle

39
Q

The head of 2nd rib has how many facets for articulating w what

A

2 facets
T1 and T2 vetebrae

40
Q

The main atypical feature of the 2nd rib is

A

It has a rough area on its upper surface which serves as the tuberosity for serratus anterior

41
Q

The 10th to 12th ribs have how many facets on their head

A

One

42
Q

Which ribs are short and have no neck or tubercle

A

11th and 12th

43
Q

Anterior to the scalenus anterior muscle, the _________ crosses the 1st rib

A

Subclavian vein

44
Q

Posterior to the scalenus anterior muscle, _________ and ________ cross the rib and lie in contact with the bone

A

Subclavian artery and lower trunk of BP

45
Q

The tubercle of the first rib articulates w the transverse process of the first thoracic vertebrae to form _________

A

Costotransverse joint

46
Q

Check your jotter

A
47
Q

What type of cartilage is costal cartilage

A

Hyaline cartilage

48
Q

The costal cartilage had
Two surfaces:
Two borders:
Two ends:

A

Anterior and posterior
Superior and inferior
Lateral and medial

Thorax (1 decks)

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