File:Keith1902 fig245.jpg: Difference between revisions

From Embryology
mNo edit summary
mNo edit summary
 
(One intermediate revision by the same user not shown)
Line 2: Line 2:


Which correspond with those of [[:File:Keith1902 fig244.jpg|Ornithorynchus]].
Which correspond with those of [[:File:Keith1902 fig244.jpg|Ornithorynchus]].
In order to give greater mobility and speed to some four-footed mammals, the clavicle has been reduced to a ligamentous band, except at its extremities (rabbit, dog, etc.). In climbing animals, and those in which the power of grasping or embracing is highly developed, the clavicles are fully developed.
The acromion process is ossified from several centres which appear in the years of adolescence ; the epiphysis so formed may be united to the spine by fibrous tissue only. This occurs in over 8% of subjects (Symington), and may be mistaken for a fracture of the process. The coraco-clavicular ligaments may be derived from the pre-coracoid element.
'''Modern Notes:''' [[Musculoskeletal System - Shoulder Development|Shoulder Development]] | [[Fetal Development]]


{{Keith1902_20_figures}}
{{Keith1902_20_figures}}

Latest revision as of 12:22, 11 March 2018

Fig. 245. The Parts in the Shoulder Girdle of a human foetus

Which correspond with those of Ornithorynchus.

In order to give greater mobility and speed to some four-footed mammals, the clavicle has been reduced to a ligamentous band, except at its extremities (rabbit, dog, etc.). In climbing animals, and those in which the power of grasping or embracing is highly developed, the clavicles are fully developed.

The acromion process is ossified from several centres which appear in the years of adolescence ; the epiphysis so formed may be united to the spine by fibrous tissue only. This occurs in over 8% of subjects (Symington), and may be mistaken for a fracture of the process. The coraco-clavicular ligaments may be derived from the pre-coracoid element.


Modern Notes: Shoulder Development | Fetal Development


The Limbs: Fig. 233. Human Limb Buds 28th day | Fig. 234. Upper Limb | Fig. 235. Lower Limb | Fig. 236. Ilium and Scapula | Fig. 237. Arm Bud 4th week | Fig. 238. Origin of the Muscles and Nerves of the Limbs | Fig. 239. Posterior Roots Spinal Nerves of the Arm | Fig. 240. Posterior Nerve Roots in the Lower Limb | Fig. 241. Lower Limb Spinal nerves | Fig. 242. Lizard Pelvic Girdle | Fig. 243. Human Pelvic Girdle 5th week | Fig. 244. Ornithorynchus Shoulder Girdle | Fig. 245. Fetal Shoulder Girdle correspond with Ornithorynehus | Fig. 246. Tortoise Carpal Bones | Fig. 247. The Os Trigenum and Bones of the Tarsus | Fig. 248. Foetal and Adult Forms of the Astralagus | Fig. 249. Latissimo-condyloideus Muscle. | Fig. 250. Short Muscles of the Digits | Fig. 251. Ligamentum Teres and Capsular Ligament | Fig. 252. Knee Crucial Ligaments | Figures



Historic Disclaimer - information about historic embryology pages 
Mark Hill.jpg
Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)

Human Embryology and Morphology (1902): Development or the Face | The Nasal Cavities and Olfactory Structures | Development of the Pharynx and Neck | Development of the Organ of Hearing | Development and Morphology of the Teeth | The Skin and its Appendages | The Development of the Ovum of the Foetus from the Ovum of the Mother | The Manner in which a Connection is Established between the Foetus and Uterus | The Uro-genital System | Formation of the Pubo-femoral Region, Pelvic Floor and Fascia | The Spinal Column and Back | The Segmentation of the Body | The Cranium | Development of the Structures concerned in the Sense of Sight | The Brain and Spinal Cord | Development of the Circulatory System | The Respiratory System | The Organs of Digestion | The Body Wall, Ribs, and Sternum | The Limbs | Figures | Embryology History

Reference

Keith A. Human Embryology and Morphology. (1902) London: Edward Arnold.


Cite this page: Hill, M.A. (2024, April 19) Embryology Keith1902 fig245.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Keith1902_fig245.jpg

What Links Here?
© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current22:20, 20 January 2014Thumbnail for version as of 22:20, 20 January 20141,000 × 614 (88 KB)Z8600021 (talk | contribs)

Metadata