521. Ophthalmic artery is a branch of_________________?
A. Maxillary artery
B. Sphenopalatine artery

522. All of the following are true of maxillary artery except___________________?
A. The branches of maxillary artery accompany the branches of maxillary nerve
B. It is one of the terminal branches of ECA
C. It passes deep between the two heads of lateral pterygoid muscle into the pterygo palatine fossa
D. It is the arterial supply for mandible

523. The cavernous sinu does not communicate with the_____________?
A. Opthalumic vein
B. Internal jugular vein
C. External jugular vein
D. Pterygoid plexus

524. the inferior dental artery is a branch of the______________?
A. Mandibular artery
B. Maxillary artery
C. Pterygomandibular plexus
D. None of the above

525. Neural tube formation occurs on___________?
A. 18 to 23 days post fertilization and is the second stage of craiofacial development
B. 28 to 38 days post fertilization and is the third stage of craniofacial development
C. 42 to 55 days post fertilization and is the fourth stage of craniofacial development
D. 17 the day post fertilization and is the first stage of craniofacial development

526. A person showing two cell lines drived from one zygote is__________________?
A. Chimerism
B. Mosaicism
C. Segregation
D. Pseudo – dominance

527. Which of the following is not a neuroectodermal derivative ?
A. Paneth cells
B. Neurons
C. Schwann cells
D. Odontoblasts

528. Which of the following is a derivative of the second brachial cleft________________?
A. Tympanic cavity
B. Meckel’s cartilage
C. Palatine tonsil
D. Tongue base

529. Which part of the body is underdeveloped at birth_____________?
A. Eyes
B. Ears
C. Face
D. Brain

530. The fusion of two bony structures with a ligament is known as_______________?
A. Synostosis
B. Synchondrosis
C. Diarthrosis
D. syndesmosis


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