Embryology MCQs

Option A: 18 to 23 days post fertilization and is the second stage of craiofacial development

Option B: 28 to 38 days post fertilization and is the third stage of craniofacial development

Option C: 42 to 55 days post fertilization and is the fourth stage of craniofacial development

Option D: 17 the day post fertilization and is the first stage of craniofacial development

Correct Answer: 18 to 23 days post fertilization and is the second stage of craiofacial development ✔

Option A: Chimerism

Option B: Mosaicism

Option C: Segregation

Option D: Pseudo – dominance

Correct Answer: Mosaicism ✔

Option A: Paneth cells

Option B: Neurons

Option C: Schwann cells

Option D: Odontoblasts

Correct Answer: Paneth cells ✔

Option A: Tympanic cavity

Option B: Meckel’s cartilage

Option C: Palatine tonsil

Option D: Tongue base

Correct Answer: Palatine tonsil ✔

Option A: Eyes

Option B: Ears

Option C: Face

Option D: Brain

Correct Answer: Face ✔

Option A: Synostosis

Option B: Synchondrosis

Option C: Diarthrosis

Option D: syndesmosis

Correct Answer: syndesmosis ✔

Option A: syndesmosis

Option B: Synchondrosis

Option C: Saddle

Option D: Suture

Correct Answer: syndesmosis ✔

Option A: Brachycephaly

Option B: oxycephaly

Option C: Trigonocephaly

Option D: Scaphocephaly

Correct Answer: Brachycephaly ✔

Option A: Hyoid bone

Option B: Maxillary process

Option C: Stapes

Option D: Styloid process

Correct Answer: Maxillary process ✔

Option A: 1stbranchial arch

Option B: 2nd branchial arch

Option C: 3rd branchial arch

Option D: 6th branchial arch

Correct Answer: 1stbranchial arch ✔

Option A: First and second

Option B: Second and third

Option C: Third and fourth

Option D: Fourth and fifth

Correct Answer: Third and fourth ✔

Option A: Facial nerve

Option B: Trigeminal

Option C: Vagus

Option D: Glossopharyngeal

Correct Answer: Glossopharyngeal ✔

Option A: Tesnor tympani and tensor veli palatine

Option B: Posterior belly of digastric

Option C: Masticatory muscles

Option D: Mylohyoid

Correct Answer: Posterior belly of digastric ✔

Option A: Hensen’s node

Option B: Notochordal process

Option C: Cloacal membrane

Option D: Blastopore

Correct Answer: A. Hensen’s node ✔

Option A: 1st pharyngeal swelling

Option B: Lateral lingual swelling

Option C: Occipital myotomes

Option D: Preoptic myotome muscles

Correct Answer: Occipital myotomes ✔

Option A: 42

Option B: 41

Option C: 46

Option D: 44

Correct Answer: 44 ✔

Option A: Embryonal disc

Option B: Yolk sac

Option C: Amniotic cavity

Option D: Palacenta

Correct Answer: Yolk sac ✔

Option A: Maxillary process

Option B: Lateral palatine process

Option C: Frontonasal process

Option D: All of the above

Correct Answer: All of the above ✔

Option A: First Arch

Option B: Third Arch

Option C: Second Arch

Option D: All of the above

Correct Answer: Third Arch ✔

Option A: Tuberculum impar

Option B: Hypobranchial eminence

Option C: Lingual swellings

Option D: Arytenoid swellings

Correct Answer: Arytenoid swellings ✔

Option A: Median palatine process

Option B: Lateral palatine process

Option C: Both A and D

Option D: Either A or B

Correct Answer: Both A and D ✔

Option A: Found and the lower lip

Option B: Found on the upper lip

Option C: On either side of the midline

Option D: Associated with cleft lip and palate

Correct Answer: Found on the upper lip ✔

Option A: Ectoderm

Option B: Mesoderm

Option C: Endoderm

Option D: None of the above

Correct Answer: Ectoderm ✔

Option A: Sphenoid

Option B: Vomer

Option C: Zygoma

Option D: Lacrimal

Correct Answer: Zygoma ✔

Option A: Three arteries and one vein

Option B: One artery and three veins

Option C: One artery and one vein

Option D: Two arteries and one vein

Correct Answer: Two arteries and one vein ✔

Option A: 4 weeks

Option B: 6 weeks

Option C: 13 weeks

Option D: 18 weeks

Correct Answer: 4 weeks ✔

Option A: Maxillary artery

Option B: Mandibular artery

Option C: Carotid artery

Option D: Stapedial artery

Correct Answer: Maxillary artery ✔

Option A: From the end of first week till the eight week

Option B: from the period of ovum till the tenth week

Option C: From oogenesis till the eight week

Option D: From fertilization till the eight week

Correct Answer: From fertilization till the eight week ✔

Option A: In anterior 2/3 of dorsal aspect

Option B: In posterior 1/3 of dorsal aspect

Option C: Near the base of tongue close to foraman caecum

Option D: In anterior 2/3 of inferior surface

Correct Answer: Near the base of tongue close to foraman caecum ✔

Option A: Dorsal part of II pharyneal pouches

Option B: Ventral part of II pharyneal pouches

Option C: Dorsal part of III pharyneal pouches

Option D: Ventral part of I pharyneal pouches

Correct Answer: Ventral part of II pharyneal pouches ✔

Option A: First pharyngeal arch

Option B: First and second pharyngeal arches

Option C: Second and third pharyngeal arches

Option D: Fourth pharyngeal arch

Correct Answer: Second and third pharyngeal arches ✔

Option A: Spheno Mandibular Ligament

Option B: Stylomandibular ligament

Option C: Anterior ligament of Malleus

Option D: Stylohyoid Ligament

Correct Answer: Stylohyoid Ligament ✔

Option A: Thyroglossal duct

Option B: Rathke’s pouch

Option C: Notochordal process

Option D: Embryonal disc

Correct Answer: Thyroglossal duct ✔

Option A: Dorsal part of 1st ectodermal pouch

Option B: Dorsal part of 2nd cleft

Option C: Dorsal part of 3rd ectodermal pouch

Option D: Sixth branchial arch

Correct Answer: Dorsal part of 1st ectodermal pouch ✔

Option A: The head first, then width of face and length (or) depth of face after wards.

Option B: the width of face, then head and length (or) depth of face after wards

Option C: The length ( or) depth of face then width of face and the head

Option D: The head first , length (or) depth of face and then width of face

Correct Answer: The head first, then width of face and length (or) depth of face after wards. ✔

Option A: Hepatocytes

Option B: Epithelial cells of the intestine

Option C: Odontoblasts

Option D: Goblet cells

Correct Answer: Odontoblasts ✔

Option A: First brachial arch

Option B: First brachial pouch

Option C: Second brachial arch

Option D: Second pharyngeal pouch

Correct Answer: Second brachial arch ✔

Option A: first arch

Option B: Second arch

Option C: Third arch

Option D: Fourth arch

Correct Answer: first arch ✔

Option A: Anterior 1/3 of tongue

Option B: Anterior 2/3 of tongue

Option C: Posterior 1/3 of tongue

Option D: Posterior 2/3 of tongue

Correct Answer: Anterior 2/3 of tongue ✔

Option A: 1st,2nd ,3rd bronchial arches

Option B: 1st ,3rd, 5th bronchial arches

Option C: 1st ,3rd, 4th bronchial arches

Option D: 1st, 4th, 5th bronchial arches

Correct Answer: 1st ,3rd, 4th bronchial arches ✔

Option A: Otic capsule

Option B: Styloid bone

Option C: Hyoid cartilage

Option D: None of the above

Correct Answer: Otic capsule ✔

Option A: Pharyneal arch

Option B: Buccopharyngeal membrane

Option C: Rathke’s pouch

Option D: Mandibular process

Correct Answer: Buccopharyngeal membrane ✔

Option A: Fusion of lateral nasal process with maxillary process

Option B: Fusion of median nasal process with maxillary process

Option C: Fusion of median and lateral nasal process

Option D: None of the above

Correct Answer: Fusion of median nasal process with maxillary process ✔

Option A: Maxillary and mandibular

Option B: Maxillary and median nasal

Option C: Maxillary mandibular lateral nasal and median nasal

Option D: Mandibular and median nasal

Correct Answer: Maxillary mandibular lateral nasal and median nasal ✔