Which of the following is not an important division of subclavian artery?

 # Which of the following is not an important division of subclavian artery?

A. Thyrocervical trunk

B. Internal thoracic artery

C. Carotid artery

D. Vertebral artery

The correct answer is C. Carotid artery.

A. VERTEBRAL ARTERY: Supplies the brain.

B. INTERNAL THORACIC ARTERY: Descends to supply the diaphragm and terminates as the superior epigastric artery, which helps to supply the abdominal wall.

C. THYROCERVICAL OR CERVICOTHYROID TRUNK: Divides into three arteries- the transverse cervical artery, suprascapular artery and the inferior thyroid artery.

D. COSTOCERVICAL TRUNK: divides into two branches- the superior intercostals and deep cervical arteries, which supply muscles of intercostal spaces.

E. DORSAL SCAPULAR ARTERY: supplies the muscles of the scapular region. 

Carotid artery is not a part of subclavian artery.

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The most abundant protein in humans is:

 # The most abundant protein in humans is:

A. Fatty acids

B. Fiber

C. Carbohydrates

D. Collagen

The correct answer is D. Collagen.

Collagen is the most abundant protein in human body, characterized by its high rigidity and tensile strength.

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Which of the following collagen is found in cartilage?

 # Which of the following collagen is found in cartilage?

A. Type 1

B. Type 2

C. Type 3

D. Type 4

The correct answer is B. Type 2.

Several types of Collagen are found in different body tissues.

a. Type I - Skin, tendon, bone, dentin

b. Type II - Cartilage

c. Type III - Aorta, fetal skin

d. Type IV - Basement membrane

e. Type V - Placenta, Skin

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Percentage of proline in collagen

 # Approximately one third of collagen is glycine and about _______ is proline.

A. 14 %

B. 12 %

C. 10 %

D. 5 %

The correct answer is C. 10 %.

Approximately one third of collagen is glycine (every third position) and ten percent is proline.

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Fibrous, insoluble protein derived from epidermis is:

 # ________ is fibrous, insoluble protein derived from epidermis.

A. Collagen

B. Keratin

C. Elastin

D. Myofibril

The correct answer is B. Keratin.

Keratin is fibrous and insoluble protein derived from epidermnis. Elastin is rich in proline and other non polar side chains. Approximately one third of elastin is composed of amino acid glycine.

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Mithila Multispeciality Dental and Implant Centre Pvt. Ltd., Lahan, Siraha

 Name of Dental Clinic:Mithila Multispeciality Dental and Implant Centre Pvt. Ltd.

Address (Full): Lahan-3;Hospital chowk

Year of Establishment: 2079

Name of the chief Dental Surgeon: Dr.Pankaj Shah

CONTACT NUMBER: 9803293946

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An 'orphan drug' is:

 # An 'orphan drug' is:

A. A very cheap drug

B. A drug which has no therapeutic use

C. A drug needed for treatment or prevention of a rare disease

D. A drug which acts on Orphanin receptors

The correct answer is C. A drug needed for treatment or prevention of a rare disease.

Orphan Drugs These are drugs or biological products for diagnosis/treatment/ prevention of a rare disease or condition, or a more common disease (endemic only in resource poor countries) for which there is no reasonable expectation that the cost of developing and marketing it will be recovered from the sales of that drug. The list includes sodium nitrite, fomepizole, liposomal amphotericin B, miltefosine, rifabutin, succimer, somatropin, digoxin immune Fab (digoxin antibody), liothyronine (T3) and many more. Though these drugs may be life saving for some patients, they are commercially difficult to obtain as a medicinal product. Governments in developed countries offer tax benefits and other incentives to pharmaceutical companies for developing and marketing orphan drugs (e.g. Orphan Drug Act in USA).

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