Each of the Following Is Evident on a Maxillary First

question 18

Multiple Choice

Each of the following is evident on a maxillary first premolar EXCEPT one.Which one is the EXCEPTION?

• A) Mesial marginal groove
• B) Mesial developmental depression
• C) Mesial marginal ridge
• D) Distinct distal marginal ridge
• E) Two small,afunctional lingual cusp tips

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Definitions:

Tunica Interna

Also known as the intima, it is the innermost layer of a blood vessel, lining the lumen.

Tunica Intima

The innermost layer of a blood vessel, consisting of a thin layer of endothelial cells that line the lumen.

Tunica Externa

The outermost layer of a blood vessel, composed largely of connective tissues, which provides support and protection.

Tunica Media

The middle layer of the wall of a blood vessel or lymph vessel which is made up of smooth muscle cells and elastic tissue.