Ch 58, ex. 4 fetal face and neck

Question 0

There are ___ branchial arches

Answer 0

6

Question 1

The embryo in the 4th week has characteristics external features of the head and neck area in the form of a series of brachial arches, pouches, grooves, and membranes that are referred to as the ___ and bear a resemblance to gill.

Answer 1

Branchial apparatus

Question 2

The first branchial arch is also known as the _____ arch; it forms the jaw, zygomatic bone, ear, and temporal bone

Answer 2

Mandibular

Question 3

The _____ crest cells develop the skeletal parts of the face, and the ____ of each arch develops the musculature of the face and neck

Answer 3

Neural

Mesoderm

Question 4

The primitive mouth is an indentation on the surface of the ____ (referred to as the stomodeum)

Answer 4

Ectoderm

Question 5

The maxillary prominences grow ____ between the 5th and 8th weeks. This growth compresses the medial nasal prominences together toward the midline. The two medial nasal prominences and the two maxillary prominences lateral to them fuse together to form the ____ lip

Answer 5

Medially

Upper