PONTIBRACHIUM 



1158 



PORCELAIN 



Pontibrachium {pon - tib - ra' - ke-um) [pons, bridge; 

 brachium, arm]. The middle peduncle of the cere- 

 bellum. 



Pontic {pon'-tik) [pons, bridge]. Same as Pontile. 



Ponticulus {pon-tik' -u-lus) [dim. of pons, bridge]. A 

 small, transverse ridge between the pyramids of the 

 oblongata and the pons. P. auriculas, a slight promi- 

 nence on the eminentia conchse for the attachment of 

 the retrahens aurem muscle. P. hepaticus, a bridge 

 of tissue, containing a plexus of blood-vessels, and ex- 

 tending from the surface of the Spigelian to that of the 

 right lobe of the liver. 



Pontile {pon' -til) [pons, bridge]. Pertaining to the 

 pons. P. Hemiplegia, this is very often an alternate 

 hemiplegia, in which the arm and leg on one side, 

 and the face on the other, are paralyzed. This con- 

 dition occurs when the lesion is situated low down in 

 the pons, below the decussation of the fibers of the 

 facial nerve, and above that of the pyramidal tracts. 

 Small lesions high in the pons, produce an ordinary 

 hemiplegia. P. Nuclei, a collection of gray matter in 

 the pons. 



Pontinal (pon' '-tin-al) [pons, a bridge]. In biology, 

 bridging ; applied specifically to one of the bones in the 

 skull of certain fishes, bridging the space between the 

 sub-orbital region and preoperculum {Dactylopteroidea). 



Pontine [pon' -tin) [pons, bridge]. Same as Pontile. 



Ponto-bulbar \pon'-to-bul'-bar) [pons, bridge ; bulbus, 

 bulb]. Pertaining to the pons varolii and to the bul- 

 bus spinalis (or oblongata). 



Ponto-crural {pon' -to-kru'-ral) [pons, bridge ; crus, 

 leg]. Pertaining to the pons varolii and the crura 

 cerebri. 



Poop, Pope {poop, pop) [origin obscure]. A collo- 

 quial term used by foot-ball players to designate an 

 injury to the front and outer side of the thigh, which 

 causes more or less disability. 



Poor-man's Bandage. See Galen's Bandage. 



Pop-eyed {pop' -Id). Having pop-eyes. P.-eyes, 

 full and bulging eyes. See Exophthalmos. 



Poplar {popular). See Populus. 



Poples {pop'-lez) [L.]. The back of the knee, or pop- 

 liteal space. 



Poplitead {pop - lit - e'- ad) [poples, ham; ad, to]. 

 Toward the popliteal aspect. 



Popliteal { pop-lit-e' -al) [poples, ham, hock, or knee]. 

 Pertaining to the hinder part of the knee-joint or ham. 



Deep View of the Popli- 

 teal Space. 



I. Popliteal vein. 2. Popliteal 

 artery. 3. Internal popli- 

 teal nerve. 4. Vastus inter- 

 ims. 5. Superior internal 

 articular artery. 6. Tendon 

 of semi-membranosus. 7. 

 Inner head of gastrocne- 

 mius. 8. Inferior internal 

 articular artery. 9. Popli- 

 teal vein. 10. Popliteus. 

 11. Tendon of plantaris. 12. 

 Short head of biceps. 13. 

 External popliteal nerve. 

 14. Long head of biceps, 

 cut. 15. Outer head of gas- 

 trocnemius. 16. Communi- 

 cans peronei nerve. 17. 

 17 Soleus. 



P. Aneurysm, aneurysm of the popliteal artery. P. 

 Artery. See Arteries, Table of. P. Aspect, the 



posterior aspect of the knee. P. Bursa, one of the 

 bursa: in the popliteal space. P. Glands, the lymphatic 

 glands of the popliteal space. P. Ligament, the pos- 

 terior ligament of the knee-joint. P. Nerve. See 

 Nerves, Table of. P. Region. Same as P. Space. 

 P. Space, the lozenge-shaped space occupying die 

 lower third of the thigh and the upper fifth of the 

 leg. Its boundaries are : above, and to the outer side, 

 the tendon of the biceps ; on the outer side, and 

 below, the plantaris and the outer head of the gastroc- 

 nemius ; on'the inner side, above, from within outward 

 the semitendinosus, the semimembranosus, and the 

 gracilis, on the inner side, below, the inner head 

 of the gastrocnemius. The roof is formed by the 

 popliteal fascia ; the floor, by the lower part of the 

 posterior surface of the shaft of the femur, the pos- 

 terior ligament of the knee-joint, the upper end of the 

 tibia, and the fascia covering the popliteus muscle. 

 The contents of the space are : the popliteal vessels 

 and their branches, the termination of the external 

 saphenous vein, the internal and external popliteal 

 nerves and their branches, the small sciatic nerve, 

 the articular branch from the obturator nerve, a few 

 lymphatic glands, and some adipose tissue. P. Sur- 

 face, the surface of the femur between the supracon- 

 dylar lines. P. Tendons, the tendons of the muscles 

 forming the boundaries of the popliteal space ; the ham- 

 strings. P. Vein, the companion vein of the popliteal 

 artery. 



Popliteen {pop-lit-e' -en) [poples, ham]. Belonging to 

 the poples in itself. 



Popliteus, Poplitseus {pop-lit-e' -us) [poples, ham]. 

 Pertaining to the poples. The ham or hinder part 

 of the knee-joint. P. accessorius, a small anomalous 

 muscle arising from the external femoral condyle or from 

 a sesamoid bone in the external gastrocnemius, and in- 

 serted into the capsular ligament of the knee-joint. 

 P. biceps, P. geminus. Synonyms of P. accessorius. 

 P. Muscle. See Muscles, Table of. 



Poplitic {pop-lit' -ik) [poples, the ham]. Popliteal. 



Poppy {pop'-e) [ME., popy, poppy]. See Po 

 P. -seed, the seeds of Papaver somniferion , used in 

 Germany, and sometimes among Germans in this 

 country, to strew on the bread-dough in order to give 

 it a certain flavor. P.-seed Oil, Oleum papai 

 obtained from the seeds of the opium-poppy by pres- 

 sure. It is of a pale-yellow color and a sli 

 sweetish taste; specific gravity, .925 at 15 C. It is 

 used for salads, paints, soaps, and to adulterate olive 

 oil and almond-oil. 



Population {pop-u-la'-shun) [populus, people], 

 mass of people dwelling within a given geogra] 

 political area. P., Malthusian Law of Increase 

 of, that the number of individuals of a societ] 

 to increase faster than the food-product, so that there 

 is always a pressure on the means of subsistence. 



Populin {pop'u-lin) [populus, poplar], C M HJ 



1. 1'enzosalicin. A substance contained 

 varieties of poplar; it is the benzoyl derivative 

 salicin ; it crystallizes in small prisms containin 

 molecules of water, dissolves with difficulty in 

 and possesses a sweet taste. It is said I 

 febrifuge properties, and has also been used in dyl 



2. A precipitate from a tincture of the bark of F 

 tremuloides : tonic, stomachic, vermifuge, ai 



ic, and febrifuge. Dose 2 to 4 grains. I'nof. 

 Populus {pop'-u-lus) [L.]. Poplar. Then 



leaf-buds of several species is used for pectoral a 



nephritic troubles. Unof. 

 Porcate {por'-kat) [porca, a ridge between tv 



rows]. In biology, deeply furrowed. 

 Porcelain {pors'-lcn) [It., porcellana, porcelain]. An 



