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ANATOMY 5 > Chapter 12: The Thorax > Flashcards

Chapter 12: The Thorax Flashcards

1
Q

___________ - forms the thoracic cage which protects the thoracic viscera and some abdominal organs.

A

thoracic skeleton

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2
Q

___________ - is formed by twelve pairs of ribs and costal cartilages, thoracic vertebrae and Intervertebral disc and the sternum.

A

thoracic cage

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3
Q

_______ - are classified as elongated flat bones and there are usually 12 pairs. Numbers may increase or decrease in some people.

A

ribs

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4
Q

_______ - are the first seven pair because they attach to the vertebrae and sternum directly.

A

True ribs

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5
Q

________ - are the 8th to 10th pair because they attach to the sternum via the 7th costal cartilage.

A

False ribs

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6
Q

_________ - are 11th and 12th. Their anterior ends do not attach to the sternum but they do attend into the muscles of the anterolateral abdominal wall.

A

Floating ribs

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7
Q

What are the typical ribs?

A

ribs 3 to 9

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8
Q

What are the parts of a typical ribs?

A
  1. Head
  2. Neck
  3. Tubercle
  4. Shaft
  5. Angle
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9
Q

_________ - are usually wedged shaped. They have two articulating facets for the numerically corresponding vertebra and the one superior to it; the facets are separated by the crest of the head which joins with the Intervertebral disc.

A

heads of ribs

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10
Q

________ - are stout flattened parts located between the head and the tubercles, and lie anterior to the TVP of the corresponding vertebrae.

A

necks

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11
Q

The superior border of the neck.

A

Crest

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12
Q

_______ - are on the postero-inferior surface at the junction of the neck and shaft, they articulate with the TVP of the vertebrae and serve as attachment for lateral
costotransverse ligament.

A

tubercles

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13
Q

________ - form the largest part of the ribs; the superior borders are sharp and the inferior borders are rounded. The internal surface has a costal groove which transmits its nerve and vessels.

A

shafts

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14
Q

What is the point of the greatest change in curve in the rib?

A

Angle

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15
Q

What are the Atypical ribs?

A

1st, 2nd, 10, 11 and 12 ribs

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16
Q

_______ - is the broadest and most curved of all the ribs.

A

1st rib

17
Q

_________ - attachment of the anterior scalene muscle.

A

scalene tubercle

18
Q

There are two _______ on either side of the tubercle for the subclavian artery and vein.

A

grooves

19
Q

This rib is also the shortest rib and it has a facet on its head that articulates with T1.

A

1st rib

20
Q

________ - is thinner and much less curved than the 1st and it has a tuberosity for the serratus anterior muscle. It has two facets on its head for articulation with T1 and T2.

A

2nd rib

21
Q

_________ - are short and only have one facet on their heads.

A

10th to 12th ribs

22
Q

The ribs that have no necks or tubercles.

A

11th and 12th ribs

23
Q

Contribute to the elasticity of the thoracic wall and articulation of the ribs.

A

Costal Cartilages

24
Q

_________ - forms the anterior part of the thoracic cage.

A

sternum

25
Q

Sternum is also called:

A

the breastbone

26
Q

What are the parts of Sternum?

A
  1. The manubrium
  2. The body
  3. The xiphoid process
27
Q

__________ - is the most superior portion of the Sternum. It articulates with the 1st and 2nd ribs.

A

Manubrium

28
Q

The superior margin of the manubrium is marked by the _________ which is located anterior to the Intervertebral disc of T2 and T3.

A

jugular notch

29
Q

On each side of the jugular notch is the clavicular notch which articulates with the clavicle to form the __________ . This joint is anterior to the IVD of T4 and T5.

A

sternoclavicular joint

30
Q

The inferior margin is marked by the articulation with the body of the sternum which is called:

A

sternal angle (angle of Louis)

31
Q

________ - is the longest of the three parts of the sternum. It is anterior to T5-T9 and contains costal notches for articulation of the cartilage for the third to seventh ribs.

A

body

32
Q

_________ - is the smallest part and also the most inferior portion of the sternum. It is an attachment point for the diaphragm and does not usually ossify to the sternum until 40 years of age if at all.

A

xyphoid process

33
Q

__________ - lies anterior to T9 and this joint indicates the inferior limit of the thoracic cavity anteriorly. It also marks the diaphragmatic surface of the liver and inferior border of the heart.

A

xiphisternal joint

34
Q

Xiphoid process thinner than the sternum hence there is a depression called the ________ which lies in the infrasternal angle.

A

epigastric fossa

ANATOMY 5 (12 decks)

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