5 1 2 



ANATOMY IN A NTTSHELL. 



transmits the hypoglossal nerve and some meningeal branches. This foramen 

 may lie double. 



Hi. Posterior condyloid foramen, which is behind the condyle, trans- 

 mit.- a vein in the lateral sinus. It is at the bottom of the posterior condyloid 

 fossa and is often absenl . 



The basilar process of the occipital hone is situated anterior to the foramen 

 magnum and is quadrilateral in shape. The pharyngeal spine (sagittal ridge) 

 is on its under surface and uives attachment to the tendinous raphe and the 

 Superior constrictor muscle. There is a depression on each side of this spine 



PLATE CCLXVIII. 



SUB-PUOIC LIGAMENT WITH APERTURE FOR DORSAL VEIN OF THE PENIS 

 APERTURES FOR DORSAL ARTERY AND NERVE OF PENIS 



APERTURE FOR AhTERY OF CORPUS CAVERNOSUM 

 CRUS PENIS 



SUPERFICIAL TRIANGULAR LIGAMENT 

 ISCHIO-CAVERNOSUS. OR ERECTOR PENIS. 



APERTURE FOR ARTERY TO BULB 

 URETHRAL APERTURE 



APERTURE FOR COWPER S DUCT 

 POSITION OF BULB 



APERTURES FOR SUPERFICIAL 

 PERINAEAL VESSELS AND NERVE 



DORSAL NERVE 



ANTERIOR LAYER OF TRIANGULAR 

 LIGAMENT 



DORSAL ARTERY OF PENIS 



'ERY OF CORPUS CAVERNOSUM 



DEEP TRIANGULAR LIGAMENT 



ARTERY TO BULB 



PUDIC VEINS 

 DORSAL NERVE. 

 POSITION OF COWPER S 

 GLAND 

 INTERNAL PUDIC ARTERY 



FASCIA OF COLLES 

 TURNED BACKWARDS 



POSTERIOR BORDER OF PERINEAL LEDGE 

 JUNCTION OF TRIANGULAR LIGAMENTS WITH FASCIA OF COLLES. 



Colles' Fascia \.nd the Triangular Ligaments of Perineum. 

 for the attachmenl of the Rectus capitis anticus major ami Rectus capitis anti- 

 CUS minor. 



The Internal or cerebral surface of the occipital hone is deeply concave ami 

 has the following points for consideration: 



1. I'm i; FOSSAE ate foimed by a crucial ridge. The inferior of these fossa' 

 ;iic for tie' cerebellum and the superior ones are for the cerebrum. 



2. Till. INTERNAL OCCIPITAL PROTUBERANCE lies at the junction of the 

 divisions of the ridges. It is the point where the six cranial sinuses meet to 

 form the torcular Herophili. 



'■'•. Crucial ridge has a vertical portion which is for the falx cerebri (above) 

 and the falx cerebelli (below); and a transverse portion for the tentorium cere- 



l.elli. 



4. (d;<)<)\ ES ai'c presenl between the attachment of the dura mater for the 

 sinuses. 



