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H&N UNIT 1

OROFACIAL EMBRYOLOGY PART ONE

QuestionAnswer
AKA BRANCHIAL ARCH II HYOID
TOTH TISSUE DERIVED F ROM ECTODERM ENAMEL
MOST SENSITIVE HUMAN DEV STAGE EMBRYONIC (3-8WK)
DEV STAGE WHERE MATURATION OCCURS FETAL (8WK-9MO)
GERM LAYER THAT CONTRIBUTES TO NERVOUS SYSTEM ECTODERM
CONTR TO MALFORMATION DURING DIFFERENTIATIONAL STAGE OF DEV TERATROGENS
CELLS THAT DIFFERENCIATE INTO EPIBLASTS AND HYPOBLASTS EMBRYOBLASTS
GERM LAYER THAT MAKES UP POSTERIOR 1/3 OF TONGUE ENDODERM
MIDDLE GERM LAYER THAT MAKES CONN TISSUES MESODERM
3 GERM LAYERS PRESENT IN GASTRULATION TRILAMINAR DISC FORMATION
MORULA BECOMES THIS HOLLOW BALL LIKE STRUCTURE BLASTOCYST
ZYGOT BECOMES THIS WHEN IT HAS 8-10 CELLS MORLUA
THIS NERVE IS DERIVED FROM THE MANDIBULAR ARCH TRIGEMINAL (V)
TERM USED TO DESCRIBE NEURAL TUBE FORMATION TO ENCLOSE CNS NEURALATION
THESE CELLS MEET STICKY CELL OF ENDOMETRIUM DURING IMPLANTATION TO DIGEST TROPHOBLASTS
PRIMITIVE ORAL OPENING STOMODEUM
THIS BECOMES THE AXIAL SKELETON NOTOCHORD
CARTILADE THAT CONTRIBUTES TO MANDIBLE MECKLE'S
PHARYNGEAL POUCH I FORMS MIDDLE EAR AND EUSTACHIAN TUBE
PHARYNGEAL POUCH II FORMS PALATINE TONSILS
MANDIBULAR ARCH IS ALSO KNOWN AS ARCH 1
ARCH II IS ALSO KNOWN AS HYOID ARCH
ARCH I INVOLVES WHAT NERVE? TRIGENMINAL (V)
THE HYOID ARCH INVOLVES WHAT NERVE? FACIAL (VII)
ARCH II INVOLVES WHAT MUSCLES? NECK, EAR, FACIAL EXPRESSION
MANDIBULAR ARCH INVOLVES WHAT MUSCLES? EAR, MASTICATION
THE MANDIBULAR ARCH INVOLVES WHAT BONE/CARTILAGE? EAR AND MECKLE'S
ARCH II INVOLVES WHAT BONE/CARTILAGE? EAR AND HYOID
DORSAL GERM LAYER ECTODERM
MIDDLE GERM LAYER MESODERM
VENTRAL GERM LAYER ENDODERM
EPIBLASTS DIFFERENTIATE INTO ECTODERM TO COVER THE LINING OF SKIN AND ORAL CAVITY
HYPOBLASTS DIFFERENTIATE INTO ENDODERM LAYER TO LINE THE G.I TRACT
EMBRYOBLASSTS DEIFFERENCIATE INTO 2 DISTINCT GERM LAYERS IN WHAT STAGE? PROLIFERATIVE
THE PROCESS OF FORMING 2 DISTINCT GERM LAYERS IN THE PRLIFERATIVE STAGE IS CALLED? BILAMINAR DISC FORMATION
EMBRYOBLASTS ARE INNER MASS CELLS (AKA EPIBLASTS)
EMBRYOBLASTS FORM EMBRYO
TROPHOBLASTS ARE OUTER MASS CELLS THAT FORM THE PLACENTA
WHAT ARE THE EVENTS OF THE PROLIFERATIVE STAGE> FERTILIZATION, IMPLANTATION AND BILAMINAR DISC FORMATION
FERTILIZATION MAIN EVENTS ZYGOTE, MORULA, BLASTOOCYCST
EVENT OF IMPLANTATION THE TROPHOBLASTS, OR OUTER CELLS OF THE ZYGOT, DIGEST THE ENDOMETRIUM TO AID IN IMPLANTATION
MAIN EVENTS IMPLANTATION TROPHOBLASTS BECOME THE PLACENTA, EMBRYOBLASTS BECOME THE EMBRYO
WHAT ORAL TISSUES DOES THE ECTODERM FORM> ORAL AND NASAL EPITHELIUM
WHAT ORAL TISSUES DOES THE MESODERM FORM> DENTIN, PULP, CEMENTUM, AND PERIO LIGAMENT
WHAT ORAL TISSUE DOES THE ENDODERM FORM> THE POSTERIOR 1/3 OF TONGUE
WHAT STRUCTURES ARE ASSOCIATED WITH THE MESODERM GERM LAYER? MUSCLE, VERTIBRAE, MESENCHYMAL CELLS, CONNECTIVE TISSUE, DERMIS OF SKIN
WHAT STRUCTURES ARE ASSOCIATED WITH THE ECTODERM LAYER? NERVOUS SYSTEM, EPIDERMIS, AND CERTAIN GLANDS
WHAT STRUCTURES ARE ASSOCIATED WITH THE ENDODERM LAYER? GASTROINTESTINAL EPITHELIUM AND GLANDS
WEEKS IN THE FETAL STAGE 8 WEEKS TO 9 MONTHS
WEEKS IN THE EMBRYONIC STAGE 3-8 MWEEKS
WEEKS IN THE PROLIFERATIVE STAGE 0-2 WEEKS
EVENTS IN THE EMBRYONIC STAGE GASTRULATION, NEURALATION, AND DIFFERENTIATION
WHAT ARE THE KEY EVENTS IN GASTRULATION THE TRILAMINAR DISC FORMATION, THERE ARE 3 DISTINCT GERM LAYERS
WHAT ARE THE KEY POINTS IN NEURALATION? THE NEURAL TUBE FORMATION, THIS IS THE FUTURE SPINAL CHORD
WHAT IS THE NOTOCHORD ITS DEEP IN THE NEURAL TUBE AND IT FORMS THE AXIAL SKEL;ETON
KEY POINTS IN DIFFERENTIATION THIS IS THE MOST SENSITIVE OF TIME, ITS WHEN TERATOGENIC EFFECTS CAN OCCUR (4-8 WEEKS)
TERATOGENIC EFFECTS DISRUPTION/MALFORMATION (RADIATION, DRUGS. INFECTIONS)
WHAT HAPPENS IF THE NEURAL FOLD DOEASNT FUSE? SPINAL BIFIDA
WHEN DOES THE FACE DEVELOP? 3-7 WEEKS IN UTERO
WHEN AND HOW DOES THE STOMODEUM DEV. 3-4 WEEKS, THRU INVAGINATION
WHAT IS THE FOREGUT THE PHARYNX
THE OUTER SURFACE OF ALL THE BRANCHIAL ARCHES ARE COVERED WITH ECTODERM
THE INNER SURFACE OF ARCH 1 AND ANTERIOR PORTION OF ARCH 2 ARE LINED WITH ECTODERM
THE INNER SURFACE OF ARCH 3-5 ARE LINED WITH ENDODERM
WHEN DO THE BRANCHIAL ARCHES FORM? 3-5 WEEKS IN UTERO
WHAT ARE THE BRANCHIAL ARCHES ALSO CALLED? THE PHARYNGEAL ARCHES
HOW ARE THE ARCHES SEPARATED? INTERNALLY AND EXTERNALLY
INTERNAL (WITHIN THE PHARYNX) PHARYNGEAL POUCHES
EXTERNAL (OUTER SURFACE OF PHARYNX) BRACHIAL CLEFTS
OROPHARYNGEAL MEMBRANE IS ALSO CALLED THE BUCCOPHARYNGEAL MEMBRANE
WHAT DEV THE STRUCTURE OF THE LOWER FACE? THE MANDIBULAR ARCH
WHAT FORMS THE MAXILLARY PROCESS BRANCHIAL ARCH 1
WHAT FORMS THE MUSCLES OF MASTICATION BRANCHIAL ARCH 1
WHAT FORMS THE HARD PALATE MANDIBULAR ARCH
WHAT FORMS THE EXTERNAL AUDITORY MEATUS BRANCHIAL GROOVE 1
WHAT FORMS WEEK 4-5 AT THE SUPERIOR END OF THE OROPHARYNGEAL MEMBRANE THE OROPHARYNX
WHEN DOES THE OROPHARYNGEAL MEMBRANE RUPTURE AT THE INFERIOR END? WEEK 6-7 TO FORM THE ANAL AND URETHRAL OPENINGS
Created by: vdrodrig