What Is the Vertical Groove Located at the Midline Superior

question 20

Multiple Choice

What is the vertical groove located at the midline superior to the upper lip that extends downward on the skin from the nasal septum?

• A)Philtrum
• B)Tubercle
• C)Labial commissure
• D)Nasolabial sulcus

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Definitions:

Pectoralis Major

A significant muscle located in the upper part of the chest that helps with shoulder and arm movements.

Deltoid

A sizable, three-sided muscle enveloping the shoulder joint tasked with raising the arm and providing the shoulder with its mobility.

Biceps Brachii

A large muscle of the upper arm responsible for flexing the elbow and rotating the forearm, well known for its two heads or points of origin.

Serratus Anterior

A muscle located on the side of the chest that assists in the upward movement of the arm and in breathing.