Animal physiology for beginners / by Vincent T. Murché.

  • Murché, Vincent T. (Vincent Thomas)
Date:
[between 1880 and 1889?]
Catalogue details

Licence: Public Domain Mark

Credit: Animal physiology for beginners / by Vincent T. Murché. Source: Wellcome Collection.

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    arrangement is shown in Fig. 11, where the humerus may- be seen attached to the scapula, while the clavicle acts as a kind of rigid bar between the sternum and the scapula, which is thus held firmly in its place. The Humerus is the long hollow bone of the upper arm. It has a rounded head which fits into the glen- oid cavity of the Scapula, as shown in Fig. 13. When you hear that a person has dislocated his shoulder, it means that the head of the Humerus has slipped out of the socket or hollow in the Scapula. A sharp jerk will often send it back into its place with a clicking sound. The Fore-arm con- tains two long hollow bones, the Ulna and the Radius (Fig. 14). TheUlna is the larger of these two bones, and is connected with the Humerus by a hinge- joint at the elbow. The Ulna is prevented from moving too far back by a process (or projection) termed the Olecranon Process, as shown in the figure. The Radius is the long, slightly curved, outer bone of the fore-arm. It is smaller than the Ulna. Its upper end is attached to both the Ulna and the Humerus. Its lower end is much larger than its upper, and carries the hand. Fig. IB. Fig. 14. Long Bones of the Arm.
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