Human Anatomy - Zynoviy Myrchuk, Maryna Myrchuk 2007
Muscles of Body Regions
Mouth
The shape of the mouth is determined primarily by the Lips. The lips are formed by the orbicularis oris Muscle and have a distinct topography. The upper lip is longer and projects further than the lower one. Below the nasal septum lies a groove (the philtrum), beneath which is located the central part of the upper lip. This section fits between the two prominences of the lower lip.
Class="center">
Fig. 21. Mouth
1 - central part of the upper lip; 2 - prominence of the lower lip; 3 - quadratus labii inferioris muscle; 4 - orbicularis oris muscle; 5 - groove (philtrum)

Fig. 22. Lips

Fig. 23. Sketches of HEAD elements

Fig. 24. A. Ivanov. John the Baptist

Fig. 25. Jesus Christ

Fig. 26. Michelangelo. Prophet Isaiah

Fig. 27. Leonardo da Vinci. Head of a Warrior

Fig. 28. Monastyrsky. Cossack

Fig. 29. Leonardo da Vinci. Knight

Fig. 30. Michelangelo. Delphi Sibyl

Fig. 31. G. Tiepolo. Head of a Youth

Fig. 32. View
Last update: 10/08/2026
Editorial and Educational Adaptation: This material has been compiled based on the primary/original source text. The project team performed an editorial review, corrected technical inaccuracies, structured sections, and adapted the content for an educational format.
What was processed:
- elimination of formatting defects (OCR errors, structural breaks, corrupted characters);
- editorial organization of content;
- standardization of terminology in accordance with academic sources;
- verification of factual statements against the original source text.
All mentions of the author, publication year, and origin of the primary text have been preserved in accordance with the source.