Anatomy embryology histology videos & books

Correct Answer - D Ans. D: XII Nucleus Ambiguus Function: * Motor innervation of ipsilateral muscles of the soft palate, pharynx, larynx and upper esophagus. Pathway: * Axons of motor neurons in the nucleus ambiguus course with three cranial nerves: C.N. IX (glossopharyngeal), C.N. X (vagus), C.N. XI (the rostral or cranial portion of spinal accessory) to innervate striated muscles of the soft palate, pharynx, larynx and upper esophagus. Deficits: * Lesion of nucleus ambiguus results in atrophy (lower motor neuron) and paralysis of innervated muscles, producing nasal speech, dysphagia, dysphonia, and deviation of the uvula toward the opposite side (strong side). * No affection of the Sternocleidomastoid or Trapezius. These muscles are innervated by cells in the rostral spinal cord (caudal portion C.N. XI).

Correct Answer - D Upper Quadrangular space It has the following boundaries: – the teres major inferiorly – the long head of the triceps laterally For the superior border, some sources list the teres minor, while others list the subscapularis. It contains the scapular circumflex vessels.

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 1. Frontal bone 2. Lacrimal bone 3. Ethmoid bone 4. Zygomatic bone 5. Maxillary bone 6. Palatine bone 7. Sphenoid bone

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Correct Answer - A:B:C:E Ans. is'a'i'e., Flexor carpi ulnaris 'b' i.e.,Brachioradialis;'c' i.e., Abductor pollicis brevis; &'e' i.e., Flexor digitorum superficial • T he anterior interosseous nerve (volar interosseous nerve) is a branch of the median nerve that supplies the deep muscles on the anterior of the forearm, except the ulnar (medial) half of the flexor digitorumprofundus.

Correct Answer - B Ans. is 'b' i.e., Potts disease •A term for significant involvement of the pelvic floor by malignancy, usually carcinoma, or ttuberculosis; in which there is massive extension of pathology to the urinary bladder, female genital tract, and sigmoid colon. Adequate resection of a frozen pelvis is virtually impossible; chemotherapy and radiation therapy are palliative at best.

Ans. is'b' i.e., Long head of triceps . Supraglenoid tubercle of scapula : origin oflong head ofbiceps . Infraglenoid tubercle of scapula : origin of long head of triceps