Clavicle

Question 1

How many bones are there in the upper limb.

Answer 1

64

Question 2

Each side of the upper limb consists of how many bones!!

Answer 2

32

Question 3

Meaning of clavicle in latin ?

Answer 3

A small key

Question 4

Role of clavicle

Answer 4

To transmit the wt of the limb to the sternum .

Question 5

Clavicle consists of

Answer 5

A shaft and 2 ends (lateral and medial)

Lateral is 1/3rd part and
Medial is 2/3rs part.

Question 6

Lateral end and medial end of the clavicle are called

Answer 6

Acromion and sternal end respectively.

Question 7

The lateral end of the clavicle is flat or quadrilateral?

Answer 7

Flat

Question 8

The medial end of the clavicle is flat or quadrilateral ?

Answer 8

Quadrilateral

Question 9

Where the shaft is concave and convex according to the lateral and medial position ?

Answer 9

Lateral is concave
Medial is convex

Question 10

Which surface of the clavicle is grooved and in which direction lateral 1/3rd , middle 2/3rd or middle 1/3rd . Also the name of the groove with muscle ?

Answer 10

The inferior surface
the middle 1/3rd and lateral half
Subclavian groove
Subclavius muscle .

Question 11

Is clavicle the only horizontal bone in the human body ?

Answer 11

True

Question 12

Which bone is the first to ossify ?

Answer 12

Clavicle

Question 13

Which is the only bone that ossifies in membrane

Answer 13

Clavicle
It forms from intra-membranous ossification .

Question 14

How many primary and secondary centers are there in clavicle

Answer 14

2 primary centers (only in clavicle)
1 second

Question 15

Is the medullary cavity present in the clavicle

Answer 15

No
(Medullary cavity has bone marrow and is hollow in structure also bone marrow makes blood cells and stores fat )

Question 16

Which nerve is occasionally pierced through clavicle

Answer 16

middle Supraclavicular nerve .

Question 17

Clavicle receives the wt of the upper limb via which ligament

Answer 17

Coracoclavicular ligament

Question 18

Lateral 1/3rd of the shaft is of which shape both anteriorly and posteriorly

Answer 18

Anteriorly its concave
Posteriorly its convex

Question 19

Medial 2/3rd part of the shaft is of which shape both anteriorly, posteriorly, superiorly and inferiorly.

Answer 19

Anteriorly its convex
Posteriorly it’s smooth.
Superior its rough
Inferior has a rough oval impression

Question 20

Medial 2/3rd part of clavicle has how many surfaces

Answer 20

4
anterior , posterior , superior, inferior

Question 21

Where the nutrient foramen lies in the clavicle ?

Answer 21

At the lateral end of the subclavian groove .

Question 22

Lateral end and sternal end articulates at ?

Answer 22

Acromion process of scapula
and clavicular notch of manubrium sterni to form a sternoclavicular joint respectively.

Question 23

The articular surface of the sternal end extends to the inferior aspect for articulation with what ?

Answer 23

First coastal cartilage

Question 24

Acromioclavicular joint gives attachment to which capsule ?

Answer 24

Joint capsule

Question 25

At the medial end of the clavicle , the articular surface gives attachment to?

Answer 25

a) fibrous joint all arround
b) Articular disc posteriorly
c) Interclavicular ligament superiorly

Question 26

In lateral 1/3rd of shaft of the clavicle the anterior border gives origin to which muscle?

Answer 26

Deltoid muscle

Question 27

In lateral 1/3rd shaft of the clavicle the posterior border provides insertion to which muscle?

Answer 27

Trapezius muscle

Question 28

The conoid tubericle and trapezoid ridge gives attachment to which ligament?

Answer 28

Conoid and trapezoid parts of coracoclavicular ligament

Question 29

In Medial 2/3rd of the shaft of the clavicle the anterior surface gives origin to which muscle

Answer 29

Pectoralis major

Question 30

In medial 2/3rd of the shaft of the clavicle how much portion of the rough superior surface gives origin to which muscle

Answer 30

Half of rough superior surface gives origin to the clavicular head of the sternocleidomastoid muscle.

Question 31

The oval impression on the inferior surface at the medial end of clavicle gives attachment to which ligament?

Answer 31

Costoclavicular ligament or rhomboid ligament

Question 32

In medial 2/3rd of the shaft of the clavicle, the subclavian groove gives insertion to which muscle?

and the margins of the groove gives attachment to?

Answer 32

1)Subclavius muscle
2)Clavipectoral fascia

Question 33

In medial 2/3rd of the shaft of the clavicle , the posterior surface close to the medial end gives origin to which muscle

Answer 33

Sternohyoid muscle

Question 34

The subclavian vessels and divisions of trunks of what, pass towards the axilla lying between the inferior surface of the clavicle and upper surface of the first rib ?

Answer 34

Brachial plexus

Question 35

Which muscle acts as a cushion between clavicle and first rib ?

Answer 35

Subclavius muscle

Question 36

The nutrient foramen of clavicle transmits a branch of which artery ?

Answer 36

Suprascapular artery

Question 37

Which end of clavicle ossifies from membrane?

Answer 37

Medial end

Question 38

The 2 primary centers of the clavicle appear in which part of the clavicle, also in what week it appears and fused ?

Answer 38

In the shaft ,

appears in 5th and 6th weeks of intrauterine life ,

and fuses with the shaft at the 45th day

Question 39

The secondary center for the medial end appears during which year and in which year it fuses ?

Answer 39

15-17 years it appears
21-22 years it fuses with the shaft

Question 40

Can the acromial end have a secondary center ?

Answer 40

Occasionally,it may be present

Question 41

The most common site of fracture in clavicle is

Answer 41

The junction b/w the two curvatures of the bone , which is the weakest

Question 42

The clavicle may be congenitally absent , or imperfectly developed in a disease called

Answer 42

Cleidocranial dysostosis. In this condition the shoulders droop and can be approximated anteriorly in front of the chest.