Correct Answer -A Ans. A. Maxillary The maxillae are the largest of the facial bones, other than the mandible, and jointly form the whole of the upper jaw. Each bone forms the greater part of the floor and lateral wall of the nasal cavity, and of the floor of the orbit "Orbital surface of maxilla is smooth and triangular, and forms most of the floor of the orbit" Also know: Maxilla is also the most commonly fractured bone of orbital floor. • The floor (inferior wall) is formed by the orbital surface of maxilla, the orbital surface of Zygomatic bone and the orbital process of palatine bone • The seven bones that articulate to the orbit are Frontal bone ). Lacrimal bone 3. Ethmoid bone I. Z ygomatic bone 5. Maxillary bone Palatine bone Sphenoid bone

Correct Answer- A Portal vein THE HEPATOBILIARY TRIANGLE OR CYSTOHEPATIC TRIANGLE OR CALOT'S TRIANGLE: Boundaries: Common hepatic duct medially Cystic duct inferiorly Inferior surface of liver superiorly Contents: Cystic artery Right hepatic artery Lymph node of Lund

Correct Answer - B Preganglionic nerves travel in the lesser petrosal branch of the glossopharyngeal nerve and synapse in the otic ganglion. Postganglionic fibers reach the gland via the auriculotemporal nerve. Nerve supply of parotid gland Innervation of the salivary gland is as follows:- Parasympathetic (secretomotor) They reach the gland through auriculotemporal nerve as the following route:- Preganglionic fibers - Originate in the inferior salivary nucleus; pass through glossopharyngeal nerve; its tympanic branch; tympanic plexus, and lesser petrosal nerve. Relay ganglion:- Otic ganglion Postganglionic fibers:- Pass through the auriculotemporal nerve to reach the gland. Sympathetic (Vasomotor) Derived from the plexus around the middle meningeal artery. Sensory: derived from the auriculotemporal nerve, except for parotid fascia and overlying skin which are innervated by the great auricular nerve(c2, c3)

Correct Answer -C C5 helps mediate flexion, abduction, and lateral rotation of the shoulder, and flexion of the elbow. Both C5 and C6 mediate extension of the elbow. m Extension of the fingers is mediated by C7 and 8. Extension of the shoulder is mediated by C7 and 8. m Flexion of the wrist is mediated by C6 and 7.

Correct Answer - C C i.e. Posterior dislocation of hip • Vascular sign of narath is positive in posterior dislocation of hip joint. Due to posterior dislocation, the hip joint falls on the femoral artery, and this causes feeble or absent femoral pulse

Correct Answer - B The arch of the aorta begins at the level of the upper border of the second sternocostal articulation of the right side. The branches given off from the arch of the aorta are three in number: the brachiocephalic artery (innominate), the left common carotid, and the left subclavian. Brachiocephalic Artery is the largest branch of the arch of the aorta. It divides into the right common carotid and right subclavian arteries.

Correct Answer -D Nucleus involved in Papez circuit is anterior nucleus of thalamus. Ref: Review of Medical Physiology by William ganong, 22nd Edition, Page 256

Correct Answer-A Diaphragmatic hernias are of various types. The most common is a posterolateral (Bochdalek) hernia, which occurs as a result of a defect in the posterior diaphragm in the region of the tenth or eleventh ribs.