click below
click below
Normal Size Small Size show me how
DHYG341-34
WK 2 GROUP 4
Term | Definition |
---|---|
Frontonasal process | is one of the five prominences that develop to form the face. The frontonasal process used to be called the frontal process before the nasal pits/slits appeared. It then gives rise to the forehead, 2 medial nasal processes and 2 lateral nasal processes. |
Medial nasal process | The medial nasal processes fuse and give rise to the intermaxillary segment, which ultimately becomes the philtrum of the lip, the nostril septum, and the primary palate. |
Lateral nasal process | The lateral nasal process is the tissue lateral to the nasal pits and above of the axillary process. The lateral nasal processes go on to form the sides and the alae of the nose. |
Mandibular process | The mandibular process derived from the mandibular arch (1st pharyngeal arch). This mandibular process later forms the mandible, lower lip, anterior portion of the ear (3 auricular hillocks), and the mastication muscles. |
Maxillary process | The maxillary process derived from the mandibular arch (1st pharyngeal arch). It keeps growing bigger and later forms the cheeks of the face, part of the upper lip, and the lateral sides of the oral pit (stomodeum). |
Pharyngeal Arch #3 Vessel | The third pharyngeal arch vessels become prominent, taking over the facial area of the first two pharyngeal arch vessels. The 3rd arch vessels become the COMMON CAROTID ARTERIES, which supply the neck, face, and brain. |