In modified radical neck dissection, the structure preserved is:

 # In modified radical neck dissection, the structure preserved is:

A. Submandibular gland

B. Spinal accessory nerve

C. Sternocleidomastoid muscle

D. Internal jugular vein

The correct answer is A. Submandibular gland.

Radical neck dissection (RND)

Removal of all cervical lymphatics and lymph nodes from level IV, with sacrifice of the spinal accessory nerve, the sternocleidomastoid muscle and the internal jugular vein.

Modified radical neck dissection (MRND)

Involves the removal of cervical lymphatics and lymph nodes from levels IV along with one or more of the non lymphatic structures mentioned below:

• The spinal accessory nerve (SAN)

• The internal jugular vein (IJV)

• The sternocleidomastoid muscle (SCM)

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MCQs on General Pathology - Wound Healing and Repair

# Synthesis of DNA occurs in which phase of cell cycle?
A. Mitosis-M phase
B. Gap- G1 phase
C. Gap-G2 phase
D. Synthesis- S phase

# Correct sequence of cell cycle is:
A. G0-G1-S-G2-M
B. G0-G1-G2-S-M
C. G0-M-G2-S-G1
D. G0-G1-S-M-G2

General Pathology MCQs - Pathological Deposits

# Which of the following is a interstitial accumulation that leads to compression and degeneration of cell?
A. Amyloid
B. Protein accumulation such as Russel bodies seen in plasma cell
C. Fat accumulation seen in fatty liver
D. Hydropic and vascular changes due to water accumulation

# All of the following characteristics of amyloid can be used to distinguish it from other hyaline degeneration EXCEPT:
A. Intracellular accumulation
B. Affinity for congo red stain
C. It is formed due to accumulation of immunoglobulins
D. Immunofluorescein isothiocyanate test or secondary to predisposing diseases

Lyonization type of Amelogenesis imperfecta is seen in:

 # Lyonization type of Amelogenesis imperfecta is seen in:

A. X linked dominant

B. Autosomal dominant

C. Autosomal recessive

D. X linked recessive

The correct answer is A. X linked dominant.

Lyonization- The inactivation of an X chromosome. It is seen in X linked dominant diseases.

It is named after geneticist Mary Lyon. The process of lyonization is the deactivation of the genes of one random X chromosome in women to avoid duplication of the genes. 

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