page 237-256

Question 1

https://drive.google.com/open?id=0B8uJUY-tie8GMUZ0alB6S0lYRUU

Answer 1

https://drive.google.com/open?id=0B8uJUY-tie8GZ0xyMDRjRXhOcUU

Question 2

pouch 1

Answer 2

Tympanic membrane

Auditory tube

Middle ear cavity

Question 3

Lymphatic nodulePalatine tonsil

Answer 3

pouch 2

Question 4

Inferior parathyroid gland

thymus

Answer 4

pouch 3

Question 5

pouch 4

Answer 5

Superior parathyroid gland

Ultimobranchial body

Question 6

Gives rise to thyroid parafollicular/C-cells

■ Calcitonin

Answer 6

Ultimobranchial body

Question 7

Rudimentary structure (becomes part of pouch 4)

Answer 7

pouch 5

Question 8

https://drive.google.com/open?id=0B8uJUY-tie8GVjhGVUg1Sk9Tc3M

Answer 8

https://drive.google.com/open?id=0B8uJUY-tie8GYVlhXzR1RlhBam8

Question 9

Two mandibular processes (branchial arch 1) merge.

■ Medial ends merge at week 4.

■ Mandibular processes → merge to form lower lip.

Answer 9

mandible

Question 10

maxila

Answer 10

Two maxillary processes (branchial arch 1) merge.

■ Form upper cheek regions and most of upper lip.

Question 11

Form with growth of forebrain.

■ Develop into forehead and nose.

Answer 11

FRONTAL NASAL PROCESSES

Question 12

Two medial nasal processes merge.

■ Form philtrum of upper lip.

Answer 12

front nasal process

Question 13

Thickened areas of specialized ectoderm.

■ Located on either side of the frontal nasal process.

■ Give off elevations at their margins.

Answer 13

nasal placodes

Question 14

Lateral nasal processes (2).

■ Form sides/alae of nose.

Answer 14

NASAL PLACODES

Question 15

Medial nasal processes (2).

■ Form bridge of nose.

■ Nostrils.

■ Upper lip philtrum.

Answer 15

NASAL PLACODES

Question 16

mouth and Oral cavity

Answer 16

Begins as a slight depression on the stomodeum.

■ Located between branchial arch 1 and the forebrain.

Question 17

Buccopharyngeal membrane (oropharyngeal membrane)

Answer 17

Thin bilaminar membrane.

■ Composed of ectoderm externally and endoderm internally.

Question 18

Separates the stomodeum from the primitive pharynx (until rupture).

■ Ruptures around week 31/2 (~24 days).

■ Connecting the primitive mouth and primitive pharynx.

Answer 18

mouth and OC

Question 19

https://drive.google.com/open?id=0B8uJUY-tie8GUGp0QmhuYWM1VlU

Answer 19

https://drive.google.com/open?id=0B8uJUY-tie8GOTVpeHFSUmlFTUk

Question 20

https://drive.google.com/open?id=0B8uJUY-tie8GUFoxQklZamhhRWc

Answer 20

https://drive.google.com/open?id=0B8uJUY-tie8GR2VERTZ5SUtfT0U

Question 21

https://drive.google.com/open?id=0B8uJUY-tie8Gd2p3Nmx1dnRWX2c

Answer 21

https://drive.google.com/open?id=0B8uJUY-tie8GWWgtSmMzSGQxRHM

Question 22

Forms from merging of the two median nasal processes.

Answer 22

primary palate

Question 23

Becomes the premaxillary part of the maxilla.

Answer 23

Becomes the premaxillary part of the maxilla.

Question 24

Maxilla anterior to incisive foramen in adults.

■ Contains central and lateral incisors.

Answer 24

prim. palate

Question 25

sec. palate

Answer 25

Forms from the two maxillary processes (lateral palatine processes). ■ Forms hard and soft palates.

Question 26

Extends from incisive foramen posteriorly.

Answer 26

sec. palate

Question 27

https://drive.google.com/open?id=0B8uJUY-tie8GeDN2bXpwWEZLMWM

Answer 27

https://drive.google.com/open?id=0B8uJUY-tie8GeDZOOEJVa2k5U1k

Question 28

cleft palate Occurs with failure to fuse \>1 of the following

Answer 28

Lateral palatine processes (palatal shelves). ■ Nasal septum. ■ Primary palate.

Question 29

https://drive.google.com/open?id=0B8uJUY-tie8Gc2VYV0JCb3hmdUE

Answer 29

https://drive.google.com/open?id=0B8uJUY-tie8GOXJKM2VoR0hLYkk

Question 30

May involve uvula only, or extend through hard and soft portions of palate. ■ Cleft uvula only. ■ Unilateral cleft of secondary palate. ■ Bilateral cleft of secondary palate.

Answer 30

VARIATIONS OF CLEFT LIP AND PALATE

Question 31

Complete unilateral cleft. ■ Lip. ■ Alveolar process (of maxilla). ■ Primary palate.

Answer 31

VARIATIONS OF CLEFT LIP AND PALATE

Question 32

Complete bilateral cleft (except secondary palate). ■ Lip. ■ Alveolar process (of maxilla). ■ Anterior palate. ■ Secondary palate (unilateral

Answer 32

VARIATIONS OF CLEFT LIP AND PALATE

Question 33

Complete bilateral cleft. ■ Lip. ■ Alveolar process. ■ Anterior (primary) palate. ■ Posterior (secondary) palate.

Answer 33

VARIATIONS OF CLEFT LIP AND PALATE

Question 34

Begins in the first week with the formation of the tuberculum impar

Answer 34

TONGUE DEVELOPMENT

Question 35

Tuberculum impar. ■ Median, triangular elevation. ■ Appears on floor of pharynx, just in front of foramen cecum.

Answer 35

TONGUE DEVELOPMENT

Question 36

https://drive.google.com/open?id=0B8uJUY-tie8Gc3ItV2xNN0JtU0k

Answer 36

https://drive.google.com/open?id=0B8uJUY-tie8GSFVvTmE3Q2I0LVk

Question 37

Lateral lingual swellings (distal tongue buds [2]). ■ Form on each side of the tuberculum impar.

Answer 37

Anterior Two-Thirds of Tongue

Question 38

From the proliferation of mesenchyme (arches 1, 2, 3). ■ Swellings fuse to form the anterior two-thirds of tongue.

Answer 38

Anterior Two-Thirds of Tongue

Question 39

Posterior Third of Tongue:

Answer 39

Formed by two elevations. ■ Copula (arch 2). ■ Hypobranchial eminence (arch 3).