82.Towne’s projection is a:

a. A-p view b. P-a
c. Lateral d. Panoramic

Ans: a. Antero-posterior view

This view is primarily used to observe the occipital area of skull and sometimes the

FOR MORE IN DENTISTRY: VISIT

RxDENTISTRY
LOVEHUES
DENTAL MATRIX

58.Which of the following structures is lined with epithelium derived from mesoderm of the ureteric bud?

A. Bowman's capsule b. Distal convoluted tubule

C. Loop of Henle D. Ureter

ANS. D. The transitional epithelium that lines the ureter, the renal pelvis, and the major and minor calyces is derived from mesoderm of the ureteric bud, as is the cuboidal epithelium of the collecting tubules. The simple squamous epithelium lining Bowman's capsule (choice A) is derived from mesoderm of the metanephric vesicle. The simple cuboidal epithelium lining the distal convoluted tubule (choice B) is derived from mesoderm of the metanephric vesicle. The simple squamous epithelium lining the loop of Henle (choice C) is derived from mesoderm of the metanephric vesicle.

FOR MORE IN DENTISTRY: VISIT

RxDENTISTRY
LOVEHUES
DENTAL MATRIX

57. The primary germ layer endoderm is derived from :

a) Embronal disc b) Yolk sac
c) Amniotic cavity d) Placenta


ANS. b

FOR MORE IN DENTISTRY: VISIT

RxDENTISTRY
LOVEHUES
DENTAL MATRIX

55.Which of the following is NOT a Neural Crest Derivatives:

a. Odontoblasts b. Bones of the face and skull
c. Melanocytes d. None

ANS>D

Neural Crest Derivatives

• · Connective tissue and bones of the face and skull
• 
  
• · Cranial nerve ganglia
• 
  
• · C cells of the thyroid gland
• 
  
• · Conotruncal septum in the heart
• 
  
• · Odontoblasts
• 
  
• · Dermis in face and neck
• 
  
• · Spinal (dorsal root) ganglia
• 
  
• Sympathetic chain and preaortic ganglia
• Parasympathetic ganglia of the gastrointestinal tract
• Adrenal medulla
• Schwann cells
• Glial cells
• Arachnoid and pia mater (leptomeninges)
• Melanocytes

FOR MORE IN DENTISTRY: VISIT

RxDENTISTRY
LOVEHUES
DENTAL MATRIX