The cat; an introduction to the study of backboned animals, especially mammals (1881) (20399808899)

Title: The cat; an introduction to the study of backboned animals, especially mammals

Identifier: catintroductiont00miva (find matches)

Year: 1881 (1880s)

Authors: Mivart, St. George Jackson, 1827-1900

Subjects: Cats; Anatomy, Comparative

Publisher: London, Murray

Contributing Library: MBLWHOI Library

Digitizing Sponsor: MBLWHOI Library

Text Appearing Before Image:

CHAP. IV.) THE SKELETON OF THE LIMBS. 91 pectoral limb, and extends from the shoulder to the elbow-joint. It is imperfectly cylindrical, being flattened from side to side above, and from before backwards below. It describes a very slight sigmoid curve from above downwards, convex forwards above and concave below. The cylindrical part (or shaft) has its inner surface marked above by a wide longitudinal depression, termed the bicipital groove.

Text Appearing After Image:

Fi. 52.—Right Scapula. A. Seen fri:im lielow. B. Seen from within, c. Coraeoicl priK-ess. jr. Glenoid surface. m. Jletaeroniion process. sb. Sub-seapnlar fossa (witli two oblique ridges) X. Axillaiy border, showing its longitudinal groove. The arroniion process is seen in figure A, just above the letter ia. because it lodges the tendon of a muscle called the Biceps. External to this is a slightly roughened and elevated tract (dr) called the deltoid ridge, as it serves for the insertion of the deltoid muscle. The lower part of the shaft has its anterior surface separated from the posterior surface by two lines (or ridges), one on each side, which become especially well marked as they approach the lower end of the bone. The outer (rs) of these two ridges (which is the stronger and more posteriorly situated of the two) is termed the siqnnator, or cxto'iml condyloid ridge, while the inner one is named the internal condyloid, or pronator ridge. Just within it is an elongated opening, or foramen, called i\\Q supracondylar foramen (fc), which transmits the median nerve and brachial artery. On the hinder surface of the shaft (which is generally convex) there may be detected a very slightly marked oblique groove (called the musculo-spircd), passing from above downwards and outwards. The upper end of the humerus shows a large rounded convex head (li), covered, when fresh, with cartilage, and articulated to the glenoid surface of the scapula. This head is not placed on the middle of the summit of the bone, but on its hinder and inner aspect, so that its axis does not coincide with that of the shaft. On the outer and inner sides of the head of the humerus, are two

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1881

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