Ribs

Question 1

Ribs attach to vertebrae ______ and terminate as costal cartilages ______?

Answer 1

1. Posteriorly
2. Anteriorly

Question 2

How are ribs classified?

Answer 2

Into:
1. Atypical ribs
2. Typical ribs

Question 3

What are parts of typical ribs?

Answer 3

Head
- 2 articular facets separated by bony ridge

Neck
- Bony Tubercle for attachment of transverse process of corresponding vertebrae

Shaft
- Groove for neurovascular supply of the thorax (for intercostal vein, artery, nerve)

Question 4

What are atypical ribs?

Answer 4

Ribs:
1:
shorter n wider,
1 facet
Superior surface - 2 grooves for subclavian vessels

2
Thinner and longer than 1
Roughened area on its upper surface - serratus anterior originates

10
1 facet

11 & 12
No neck
1 facet

(Have features that are not common to all)

Question 5

Serratus anterior muscle originates from which rib?

Answer 5

Rib 2

Question 6

What are the joints formed by ribs?

Answer 6

1. Costotransverse joint
   Btw tubercle of rib
   And transverse costal facet of vertebrae
   (Absent in 11th and 12th rib)
2. Costovertebral joint
   Btw head of rib
   And superior facet of corresponding vertebdae
   Inferior facet of above vertebrae

Question 7

Which muscle is attached to the upper surface and inner border of rib 1?

Answer 7

Scalenus anterior

Question 8

What is cervical rib?

Answer 8

Cervical rib is a condition where an extra rib forms in the neck region, which can contribute to the development of thoracic outlet syndrome. The presence of a cervical rib can cause compression or irritation of the nerves and blood vessels in the thoracic outlet, leading to the symptoms associated with thoracic outlet syndrome.

Question 9

What is thoracic outlet syndrome?

Answer 9

Thoracic outlet syndrome is a condition where there is compression of nerves or blood vessels in the upper chest area, leading to symptoms like pain, numbness, and weakness in the arm and hand. It can be caused by factors like poor posture, muscle imbalances, or anatomical abnormalities. Treatment may involve physical therapy, medication, or in some cases, surgery.

Question 10

What is thoracic outlet syndrome?

Answer 10

Thoracic outlet syndrome is a condition where there is compression of nerves or blood vessels in the upper chest area, leading to symptoms like pain, numbness, and weakness in the arm and hand. It can be caused by factors like poor posture, muscle imbalances, or anatomical abnormalities. Treatment may involve physical therapy, medication, or in some cases, surgery.

Question 11

The cartilages of which ribs are embedded in abdominal musculature?

Answer 11

11th and 12th

Question 12

Thoracic outlet syndrome occurs at?

Answer 12

-The brachial plexus of nerves (C5,6,7,8 and T1)
-Subclavian artery and vein
Are closely related to upper surface of 1st rib and the clavicle

Here blood vessels may be compressed between the bones