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LV. NERVOUS SYSTEM 
(a) Central Nervous System 
Filum terminale. 
Glandula coccygea. 
Pyramidal tracts. 
Parieto - occipital fissure 
palte”’). 
Pineal gland (epiphysis cerebri). 
Pituitary body (hypophysis cerebri). 
(“A ffens- 
THE STRUCTURE OF MAN 
Lobus olfactorius. 
Roof of the fourth ventricle. 
Obex, ligula, vela medullaria, teenie 
medullares. 
Occipital lobe of cerebrum. 
Posterior cornu of lateral ventricle. 
Calcar avis. 
(b) Peripheral Nervous System 
Roots and gangha of hypoglossus. 
Rami recurrentes of certain cerebral 
nerves, 
Traces of tegumental sense organs in 
foetal life. 
Variations in the brachial and lumbo- 
sacral plexuses. 
V. SENSE ORGANS 
Disappearance of an olfactory ridge 
in the embryo. 
Papilla palatina and foliata, 
Jacobson’s organ. 
Vasa hyaloidea (Cloquet’s canal). 
The projectile nose. 
Orbitalis muscle. 
Levator palpebre superioris muscle. 
Plica semilunaris. 
Supernumerary lachrymal glands. 
Epicanthus, 
Auditory ossicles (relations to the 
visceral skeletal arches). 
The middle ear (hyoid visceral cleft). 
VI. ALIMENTARY SYSTEM 
Palatal ridges. 
Milk dentition. 
Indications of a third dentition. 
Wisdom teeth. 
Possible indications of free dental 
papille before the down-growth of 
the dental ridge. 
Canine teeth. 
Outer upper incisors. 
Cheek teeth (reduction of cusps and 
fangs). 
Appearance of a third premolar and 
a fourth molar. 
Sublingua. 
Glandula thyroidea. 
Glandula thymus. 
Foramen ccecum and base of the 
tongue. 
Ductus thyroglossus. 
Burs supra- and praehyoidea. 
Carotid gland. 
Bursa pharyngea. 
Constriction of the stomach. 
Ciliated epithelium in the cesophagus. 
Diverticulum ilei. 
Ceecum. 
Vermiform appendix. 
VII. RESPIRATORY SYSTEM 
Metamorphosis of the aortic arch Sinus Morgagni (laryngeal resonant 
system. 
Branchial pouchesand cervical fistule. 
chamber). 
Sinus and Lobus subpericardiacus. 
