Development of the Face - Anatomy Quiz

The period of development where the palate forms, lasting from the end of the sixth week to the beginning of the ninth week.

The front part of the palate, formed by the merging of the medial nasal prominences. It comprises the premaxillary part of the maxilla, which houses the incisor teeth.

The back part of the palate, where the hard and soft palates form.

The lateral palatine processes, which are mesenchymal projections extending from the maxillary prominences, form the secondary palate.

The process where the lateral palatine processes, after extending from the maxillary prominences, assume a horizontal position above the tongue and fuse to form the hard and soft palates.

The line of fusion of the palatine processes, indicated by a noticeable groove along the midline of the palate.

A small canal located between the anterior part of the maxilla and the palatine processes, persisting in the median plane of the palate.

A depression on the adult hard palate, representing the former nasopalatine canal.

The development of the palate, beginning in the sixth week and completing by the 12th week of gestation. This process involves fusion of two structures: the primary palate and the secondary palate.

A group of air-filled cavities within the skull that connect to the nasal cavity. They grow and develop after birth and contribute to the shape and size of the face.

The largest of the paranasal sinuses, located within the maxillary bones. They are present at birth and continue to grow until adulthood.

The sinuses found within the frontal bones. They develop after birth and usually become visible on X-rays around the age of 7.

The sinuses within the ethmoid bone, located near the nose. They begin to grow rapidly around 6-8 years of age.

The sinuses within the sphenoid bone, located behind the ethmoid cells. They develop after birth and grow into the sphenoid bone.

The first stage in the development of the mouth, forming the primitive mouth cavity. It forms from the depression in the ectoderm that gives rise to the oral cavity.

The frontonasal prominence surrounds the developing forebrain and gives rise to the forehead and the nose.

The maxillary prominences form the lateral boundaries of the stomodeum and give rise to the upper jaw and cheekbones.

The mandibular prominences form the caudal boundary of the stomodeum and give rise to the lower jaw (mandible) and lower lip.

The fusion of the medial ends of the mandibular prominences in the median plane. This process forms the lower jaw and lower lip.

A dimple located on the chin that results from incomplete fusion of the mandibular prominences.

The development of facial features occurs during the embryonic period, mainly between the fourth and eighth weeks. By the end of that period, the face has a human appearance.

The proportions of facial features develop during the fetal period. This is after the facial features have a basic human appearance.

A cluster of cells in the inner dental epithelium that plays a crucial role in regulating the early stages of tooth development.

The outermost layer of the tooth, formed by ameloblasts, which is the hardest tissue in the human body.

A thin membrane left on the tooth surface after ameloblasts retreat, which eventually sloughs off after tooth eruption.

A layer of specialized bone that covers the tooth root, attaching it to the periodontal ligament.

A specialized tissue found in the pulp cavity of the tooth, containing blood vessels and nerves that provide nutrition and sensation to the tooth.

The process of teeth erupting through the gums and appearing in the mouth.

The first set of teeth that develop in humans, also called baby teeth.

The permanent teeth that replace deciduous teeth during childhood.

Bilateral oval thickenings of the surface ectoderm, located on the inferolateral parts of the frontonasal prominence, that develop during the fourth week of embryonic development, forming the primordia of the nasal epithelium.

Horseshoe-shaped elevations formed by mesenchyme proliferation at the margins of the nasal placodes. They develop into the medial and lateral parts of the nose.

Depressions formed by the stretching of the nasal placodes, where the nasal pits reside. They represent the early stages of the anterior nares (nostrils) and nasal cavities.

The process of the medial nasal prominences moving towards the midline, driven by the proliferation of the maxillary prominences. This movement is regulated by PDGFRA signaling.

A groove that separates the lateral nasal prominence from the maxillary prominence. It plays a role in the development of the nasolacrimal duct.

Six mesenchymal swellings that develop around the first pharyngeal groove during the fifth week, ultimately forming the external ear structure and external acoustic meatus.

The process of the maxillary prominence merging with the lateral nasal prominence along the line of the nasolacrimal groove. This establishes the continuity between the side of the nose and the cheek.

A rod-like thickening of ectoderm in the floor of the nasolacrimal groove, which develops into the nasolacrimal duct, responsible for draining tears from the eyes to the nasal cavity.

The line where the primary and secondary palates fused during embryonic development.

The nasal septum develops as a downward growth from the merged medial nasal prominences. It joins with the palatine processes starting anteriorly during the ninth week and continues posteriorly until the twelfth week, above the developing hard palate.

Specialized cells called odontoblasts, which originate from neural crest cells, produce dentin, the hard tissue underlying enamel.

A layer of epithelial cells called ameloblasts differentiates from the inner dental epithelium, forming enamel, the hard outer layer of teeth.

The inner dental epithelium forms a C-shaped structure called the dental lamina, which gives rise to dental buds, precursors of the teeth.

The dental cap, consisting of an outer dental epithelium, an inner dental epithelium, and a central stellate reticulum, forms during tooth development.

The dental papilla, derived from neural crest cells, is located within the indentation of the dental cap and is responsible for forming the pulp of the tooth.

As the tooth develops, the dental cap takes on a bell shape, with mesenchyme cells differentiating into odontoblasts, which lay down dentin.