Tag: buccal cavity

Questions Related to buccal cavity

Dental formula in human beings 

  1. $\dfrac{3223}[3223}$

  2. $\dfrac{2123}[2123}$

  3. $\dfrac{1232}[1232}$

  4. $\dfrac{2233}[2233}$


Correct Option: B
Explanation:

The correct answer is (b).

Dental formula refers to 

  1. The minimum number of teeth in one half of one jaw

  2. The number of each type of tooth in one half of one jaw

  3. The overall geometric shape of the jaw

  4. Maximum number of teeth in the mouth


Correct Option: A
Explanation:

In each set of teeth, incisors (I) are indicated first, canines (C) second, premolars (P) third, and finally molars (M), giving I:C:P:M which is the minimum number of teeth in one half of one jaw. 

So, 'the correct option is 'The minimum number of teeth in one half of one jaw'.

Identify typical dental formula of a metatherian.

  1. i 5/4. c 1/1, pm 3/3, m 4/4

  2. i 3/3, c 1/1, pm 4/4, m 3/3

  3. i 4/3, c 1/1, pm 3/3, m 4/4

  4. i 4/5, c 1/1, pm 3/3, m 4/4


Correct Option: A
Explanation:

There is only one set of teeth functional throughout life with the exception of a milk molar which is replaced by the last premolar. Incisors are more numerous than in placentals. 3 premolars and 4 molars as against 4 P and 3 M in placentals. Dentition in opossum is I 5/4, C 1/1, P 3/3, M 4/4. 


So, the correct option is 'Option A'.

Uvula can close the opening of

  1. Larynx

  2. Gullet

  3. Internal nares

  4. Eustachian tubes


Correct Option: C