Answers to questions prescribed by medical state boards . liver, left with spleen,stomach and pancreas. Describe the medulla oblongata. Is a part of eneephalon, continuous with spinal cord be-low and with pons albove; it rests upon basilar process ofoccipital bone, consists of white nerve matter externallyand gray matter arranged irregularly internally, the latterappearing upon the surface in floor of fourth ventricle, thelower half of which is formed by upper surface of medulla;upon ventral surface is anterior median fissure, partiallyobliterated below by decussation of crossed pyramidal trac
Answers to questions prescribed by medical state boards . liver, left with spleen,stomach and pancreas. Describe the medulla oblongata. Is a part of eneephalon, continuous with spinal cord be-low and with pons albove; it rests upon basilar process ofoccipital bone, consists of white nerve matter externallyand gray matter arranged irregularly internally, the latterappearing upon the surface in floor of fourth ventricle, thelower half of which is formed by upper surface of medulla;upon ventral surface is anterior median fissure, partiallyobliterated below by decussation of crossed pyramidal tracts;near anterior part of inferior surface are olivary bodies;posterior columns diverge to form calamus scriptorius and tobound fourth ventricle laterally for its lower half; postero-laterally are restiform bodies which can be traced upwardinto cerebellum, forming inferior peduncles of nerves from seventh to eleventh inclusive arise fromside of medulla, whileitwelfth appears upon surface in groove-between olivary body and anterior 64 ANATOMY. Locate and describe the lachrymal gland. Is located in upper, outer and anterior part of orbit, toinner side of external angular process; is made up of lobules,or clusters of acini, arranged around the ducts, six to twelvein number, which empty into outer part of superior con-junctival fornix. Describe the lungs. Each is pyramidal in shape, base resting upon diaphragm,apex extending into superior aperture of thorax, lateral, con-vex surface being applied to thoracic wall and inner, mesialand irregularly concave surface looking toward mediastinum;each possesses a root, placed upon inner surface, near pos-terior, thickened margin, and consisting of hronchus, pulmon-ary artery and vein, ibronchial artery, nerves and lymphatics;right lung has three lohes, left has two; each is made up oflohules consisting of a terminal bronchiole, around which arearranged clusters of air cells; each lung is invested by viscerallayer of
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