BONE 



130 



BONE 



umn. B., Bar, the pubic bone. B., Basal. See 

 B., Basisphenoid ; and B., Basioccipital. B., Basi- 

 branchiostegal. See P., Urohyal. B., Basidigital, 

 a name for the metacarpal and metatarsal bones because 

 they lie at the base of the phalanges. B., Basihyal. 

 See Basihyal (Illus. Diet.). B., Basilar, i. The 

 sphenoid and occipital bones regarded as one. 2. The 

 sacrum. 3. The last lumbar vertebra. 4. The basi- 

 occipital bone. 5. The basisphenoid bone in birds. 

 B., Basioccipital, the basilar part of the occipital 

 bone. B., Basioccipitosphenoidal. SeeP.,Para- 

 sphtnoid. B., Basipresphenoid, in comparative 

 anatomy a bone resulting from the junction of the basi- 

 sphenoid and presphenoid bones. B., Basisphenoid. 

 1. In human embryology, that part of the sphenoid 

 bone from which the posterior part of its body and the 

 sella turcica originate. 2. In comparative anatomy, a 

 cartilage bone lying between the basioccipital and 

 presphenoid bones. B., Basitemporal. I. A mem- 

 brane bone underlying the basisphenoid and a part of 

 the basioccipital bones in birds. 2. The lingula of the 

 sphenoid. B.s, of Bertin. See B.s, Sphenoidal 

 Turbinated (Illus. Diet.). B., Blade, the scapula. 

 B., Boat-like, the scaphoid bone. B., Breast-, the 

 sternum. B., Calf-, the fibula. B., Canal-, the 

 clavicle. B., Cancellated, B., Cancellous, bone 

 consisting chiefly of spongy tissue. B., Cannon-. See 

 Cannon-bone (Illus. Diet.). B.s, Cartilage, those 

 having intracartilaginous ossification. B., Cavalry, a 

 calcification of the tendon of the adductor magnus 

 muscle of riders. B., Ceratobranchial, the bone of 

 a branchial arch situated between the hypobranchial 

 and the epibranchial bones. B., Ceratohyal. I. The 

 epihyal bone of mammals. 2. In comparative anat- 

 omy, one corresponding to the lesser cornu of the hyoid 

 bone in man. B., Channel, the clavicle. B., Cheek-, 

 the malar bone. B.s, Chevron. See Chevron-bones 

 (Illus. Diet.). B. -chips. See Semi's Bone Plates 

 (Illus. Diet. ). B.s, Chondrogenous. See Cartilage 

 Bones (Illus. Diet.). B., Cloacal, one in fishes 

 running from the symphysis ischii to the ventral 

 wall of the cloaca. B., Cockal, the astragalus. 

 B., Coffin, the ungual phalanx of solipeds. B., Col- 

 lar-, the clavicle. B., Coracoid, an independently 

 ossified element of the ventral portion of the shoulder 

 girdle. In reptiles it is usually broad and often fenes- 

 trated (lizards), and is connected by a ligament at the 

 cartilaginous end with the precoracoid (turtles). In 

 crocodiles, together with the scapula it makes up the 

 shoulder girdle. In birds it is strong and united to the 

 curved scapula at the glenoid cavity. Among mam- 

 mals it is complete only among monotremes ; in the 

 others its only vestige is the process (coracoid) of the 

 scapula in front of the glenoid process. B., Coronal, 

 the frontal bone. B., Coronary, in veterinary anat- 

 omy the middle phalanx of the manus. B., Coronoid. 

 I. In comparative anatomy a bone on the inner aspect 

 of the mandible, corresponding to the coronoid process 

 of the inferior maxilla of man. ■ 2. The supraangular 

 bone. B., Cotyloid, in lower vertebrates a little bone 

 in the acetabulum lying next to the os pubis. B.s, 

 Covering. See Mcmhraiic-bones (Illus. Diet.). B., 

 Coxal, the coccyx and ilium. B., Crazy. See Juinii y 

 /•'<>//,' (Illus. Diet.). B., Cribriform, the ethmoid 

 bone. B., Cross, the sacrum B., Crow-beak, the 

 coracoid bone. B. -crumb. See Granules, Osuous, 

 B., Crupper, the coccyx. B., Cuneiform, Great, 

 or Large, the middle cuneiform bone of solipeds. B., 

 Cuneiform, Small, in veterinary anatomy a bone 

 located on the inner side of the tarsus and a represen- 

 tative of the union of the internal and middle cunei- 

 form bones of man. B.s, Cylindrical. See B.s, 



Long. B.s, Dermal, Owen's name for bones belon 

 ing to the cutis and which are ossifications of it. E 

 Dermalethmoid, B., Ectethmoid, B., Ectoetl 

 moid. See B., Prefrontal. B., Ectocuneifon 

 See B., Cuneiform, External (Illus. Diet.). E 

 Ectopterygoid, in comparative anatomy a bone e 

 tending from the superior maxilla to the pterygi 

 bone. B., Ell, the ulna. B.s, Elongated, io 

 bones, like the ribs, devoid of a medullary cavity. I 

 Endochondral, such true bone as originates fix 

 osteoblastic centers in fetal cartilage, and not fr< 

 periosteum. B., Entocuneiform, the internal cunj 

 form bone. B., Entoglossal, the glossohyal boi 

 B., Entohyal. See B., Glossohyal. B., Entopte: 

 goid, in comparative anatomy a thin layer 

 lying against the inner borders of the palatine . 

 pterygoid bones. B.s, Epibranchial, several an 

 bones lying between the ceratohyal and the 

 pharyngeal bones and extending horizontally from ! 

 margins of the latter. B., Epiceratohyal. 

 Epihyal. B., Epihyal, in comparative anaton 

 small bone situated between the ceratohyal a: 

 hyal bones. B., Epiotic. 1. An embryonii 

 bone corresponding to the lower portion of the ma- i 

 process of the temporal bone. 2. In compara I 

 anatomy, a bone forming the posterointernal p 

 the auditory capsule. B., Epipterygoid.in 

 tive anatomy a slender bone lying anterior to the jr 

 side of the prootic bone and articulating with 

 latter and with the pterygoid bone. B.s, Epipu I 

 See B.s, Marsupial. B., Episternal. 1. Th< 

 bone. 2. The interclavicle. 3. See B., Sit 

 B., Ethmoid, Lateral. See B. , Prefrontal. 

 Ethmoturbinal, the lateral masses of the 

 bone. B., Exercise, an ossification oceurrii 

 left arm of soldiers and attributed to constant 

 of a musket upon it. B., Exoccipital, a carti 

 bone forming in the fetus the side of the foramen 1 

 num. and the occipital condyle of the occipita 

 unites with the occipital bone about the sixth year, 1 

 many of the lower vertebrates it remains distinct thr 

 life. B., Extrascapular. See B., Supn 

 B., Face, the malar bone. B., Falciform, in 

 and allied mammals a falcate sesamoid bone siti 

 the radial side of the manus. B.s, Flat, bom 

 the length and breadth exceed the thickness. B.. F e- 

 head. See B., Frontal. B., Fork. Se< 

 cula r. B., Frontal, Anterior. See P., P 

 B., Frontal, Posterior. See B., PostfrontaL P 

 Frontonasal. See B. , A'asal (Illus. I 1 !' 

 Frontoparietal, one formed by the junctioi 

 frontal and parietal bones. B., Furcular, th 

 clavicles of a bird ; the wish-bone. B., Hamate k< 

 B. , Unciform (Illus. Diet.). B., Hamn 

 Malleus (Illus. Diet.). B., Haunch. See 

 bone. B., Heart. See Os cordis. B., 1' 

 calcaneum. B., Hip-. See P., Innominate \ 

 Diet.). B., Hook. See />'., Unciform (Illus. 1 ■ 

 B., Huckle-. I. The astragalus. 2. The ax 

 Hyomandibular, in certain fishes the upp< rn 

 in the mandibulatory suspensoiiuin, represi 

 incus of higher vertebrates. B., Hyosten 

 B., Ceratohyal. B., Hypohyal, the body of th« 1 

 bone. B., Hyposternal. See /.'.. / 

 Hypotympanic. See Quadrate (2) (111 

 B., Hypsiloid. I. See /.'., Hyoid { Illus. 1' 

 In the plural, the last coccygeal vertebras, on a . 

 of their g shape. B., Iliac, the ilium. B. ol 

 cas, the interparietal bone when i! persists til 

 as a distinct bone. B., Incisive, B., Incisor. Si 

 Intermaxillary. B., Infraorbital, in compara 

 omy one forming an arch on the lower rim ol 





