Quiz 2 - PRACTICE

Stomatodeum

The primitive oral cavity that forms in the 3rd week of embryonic development.

Thyroglossal Duct

The duct that connects the tongue and the thyroid gland during development.

Cardiac Bulge

The bulge that develops into the heart, located beneath the head of the embryo.

First, Second, and Third Pharyngeal Arches

The pharyngeal arches that play an important role in the development of the face, mouth, and tongue.

Mandibular Arch (First Pharyngeal Arch)

The first pharyngeal arch that develops into the maxillary and mandibular processes.

Buccopharyngeal Membrane

The bilaminar structure that initially separates the stomatodeum from the foregut.

Mandibular Process

The structure that will form the lower lip, lower part of the face, and mandible.

Terminal Sulcus

The groove that separates the anterior two-thirds from the posterior one-third of the tongue.

Tuberculum Impar

The embryonic swelling that develops into the tongue.

Lateral Lingual Swellings

The two lateral swellings that form the anterior two-thirds of the tongue.

Placodes

The earliest signs of sense organ formation in week 5.

Rathke’s Pouch

The ectodermal depression that will become the anterior pituitary gland.

Frontonasal Process

The region of the frontal prominence that develops into the upper face and nose.

Copula

The large midline swelling that gives rise to the root of the tongue.

Lens Placode

The placode responsible for the future lens of the eyes.

Intermaxillary Segment

The primary palate, which houses the premaxilla and upper incisors.

Maxillary Process

The structure that will form the lateral boundary of the upper lip, cheeks, and secondary palate.

Nasal Placode

The placode that develops into the nostrils.

Bucconasal and Nasolacrimal Grooves

The maxillary process approaches the lateral and medial nasal processes but remains separated from them by distinct grooves.

Week 7

The week when the palatine shelves begin forming.

Medial Nasal Process Fusion

The process that displaces the medial nasal process toward the midline.

Week 8

The week when the palatine shelves and nasal septum fully fuse.

Medial Nasal Process

It forms the nose bridge and nasal septum.

Buccopharyngeal Membrane

The structure that separates the stomatodeum from the foregut before breaking down.

Medial Nasal Process

The medial arm of the horseshoe-shaped ridge that develops into the nose.

Incisive Foramen

The foramen where the primary and secondary palates fuse.

Foramen Cecum

The structure that becomes the thyroid gland.

Placodes

The thickening of the ectoderm in the frontal prominence that signals sensory organ formation.

Week 4

The week when the tongue begins forming.

Week 6

The week when the tongue completes its development.

Copula

The large midline swelling from which the posterior part of the tongue arises.

Thyroglossal Duct

The duct that forms the connection between the tongue and thyroid during development.

Lower Lip and Mandible

The mandibular process contributes to the formation of this part of the face.

Rathke’s Pouch

The embryonic origin of the anterior pituitary gland.

Philtrum

The fusion of the medial nasal processes creates this structure in the upper lip.

Maxillary Process and Mandibular Process

The first pharyngeal arch divides into these two prominences.

Nasal Placode

The ectodermal thickening that gives rise to the future nostrils.

Medial Nasal Process

Displaced toward the midline, where it merges with its counterpart from the opposite side.

Philtrum

Formed by the enlarged caudal end of the medial nasal process.

Lower Lip

Formed by the anterior external fold of the mandibular processes.

6th Week

The eyes move to the front, the ears move to the sides of the head, and the vestibular lamina forms the oral vestibule.

Tuberculum Impar + Lateral Lingual Swellings

What makes up the Anterior 2/3 of the Tongue?

Copula + 2nd & 3rd Pharyngeal Arches

What makes up the Posterior 1/3 of the Tongue?

Thyroid Gland

Depression in between Tuberculum Impar + Copula, then descends to where the thyroid is positioned in the human body (lateral region of the neck)

Middle Portion of the Lip and Philtrum

What are the products of Globular Process?

Globular Process

It is the enlarged caudal end of the medial nasal process.

Oral Vestibule

Vestibular lamina forms the?