

PEN 



1039 



PEN'JDEH SORE 



skin by days or even weeks. The latter form most 

 frequently in the axillae or groins, and on the backs of 

 the hands and feet. After rupture, they leave exten- 

 sive excoriations, which show little or no tendency to 

 eal, but ulcerate deeply and fungate, discharging 

 ensive, viscid fluid. Death usually results from 

 profound cachexia. P. vulgaris, Pemphigus benignus ; 

 the chronic form of pemphigus ; it is a comparatively 

 rare disease, and more frequently attacks children. 

 The eruption may occur on any part of the body ex- 

 cept the palms and soles ; the seats of election are the 

 abdomen, chest and thighs, face, ears and neck, geni- 

 . and backs of the hands and feet. The lesions are 

 always bilateral and sometimes symmetric. The bullae 

 may be as large as a walnut or larger ; they soon dry 

 up. forming crusts, or burst and form scabs. Succes- 

 sive crops appear, sometimes daily (P. diutinus). 



Pen [penna, a feather]. A feather ; a quill. P. -sac, 

 in biology, the flap or hood-like prolongation of the 

 mantle of a cephalopod which contains the pen, or 

 calamary. 



Pencil p\ n'-sil) [penicillus, pencil]. In pharmacy, a 

 medicated cylindric stick, as a menthol pencil, which is 

 used for local application. 2. An aggregation of rays 

 meeting in a point. P. -flower. See Stylosanthes. 



Penciled | pen' -si hi) [penicillus, a pencil]. In biology : 

 tufted, brushy, penicillate ; (b) marked with tine 

 fines. 



Penciliform {pen' ' -sil-if-orm) [penicillus, a pencil ; 

 forma, form]. Having the form of a pencil. 



Pendent pen' -dent) [pendere, to hang]. In biology, 

 drooping or hanging. 



Pendinski Ulcer. See Furunculus orienlalis. 



Pendulous { pen' -du-lus) [pendere, to hang]. Hanging 

 or drooping loosely. P. Abdomen. See Abdomen. 



Pendulum-motion. See Motion, Pendulous. 



Penetrating \ pen' -e-tra-ting) [penetrare, to pierce]. 

 Entering beyond the surface. Said of an odor when 

 it is piercing or pungent. P. Wound, one that 

 pierces an organ or one of the larger cavities of the 

 body. 



Penetration (pen-e-tra' -shun) [penetratio ; penetrare, 

 to pierce]. In medical jurisprudence, the entrance 

 of the penis within the vagina, proof of which is a 

 prerequisite to establish the crime of rape. 



Penial (pe'-ne-al) [penis, penis]. Pertaining to the 

 penis. 



Penicil (pen'-is-il) [penicillus, a painter's brush or 

 pencil]. In biology, a brush or bundle of hairs. 



Penicillate (pen'-is-il at) [penicillus, a pencil]. Shaped 

 liked a pencil of hairs. 



Penicilliform (pen-is- il' -if -orm) [penicillus, a pencil ; 

 . form]. Resembling a pencil. 



Penicillium pen-is-il' -e-um) [penicillus, a brush]. A 

 genus of saprophytic hyphomycetes or fungi, of 

 which the P. glaucum, or common blue mold, is 

 a familiar example. 



Penile pe'-ml). Same as Penial. 



Penis / ••' -m i [L.]. The male organ of copulation. It 

 consists of the corpus spongiosum (which encloses the 

 urethral the two corpora cavernosa (which are largely 

 composed of erectile tissue) and the glans. When 

 not erect the organ is pendulous, whence its name. In 

 some animals it contains a slender bone. P. femi- 

 nis, the clitoris. P. muliebris. Synonym of P. 

 feminis. 



Penischisis (pen-is' -kis-is) [penis, penis ; ff^ewc, a split- 

 ting] . A comprehensive term for epispadias and hy- 

 pospadias. 



Penitis i pe-ni'-tis) [penis, penis; trie, inflammation]. 

 Inflammation of the penis. 



Penjdeh Sore. See Furunculus orienlalis. 



Transverse Section of the Penis of a Monkey. 

 C.C. Corpora cavernosa. C.S. Corpus spongiosum. S. Septum. 

 u. Urethra. D.Y. Dorsal vein. D.A. Dorsal arteries. N- 

 Nerves. (From Stirling-.) 



Bladder and Urethra, Laid Open by an Incision Along 

 the Upper Surface. 



i. Prostate gland. 2. Membranous part of the urethra. 3. 

 Ureter. 4 Orifice of ureter. 5. Uvula. 6. Caput gallina- 

 ginis. 7. Orifice of seminal duct. 8. Cowper's gland. 9. 

 Bulb of urethra. 10. Crus penis. 11. Orifice of the duct of 

 Cowper's gland. 12. One of the lacunae. 13. Corpus caver- 

 nosum penis. 14. Glans penis. 



Corpora Cavernosa and Adjacent Parts. (Potter.) 

 . Corpora cavernosa. 2. Corpus spongiosum. 3. Dorsal 

 vein. 4, 4. Arteries. 5, 5. Nerves. 



