Practical anatomy.

  • Christopher Heath
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Practical anatomy. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    Fie. 7. The Biceps (Fig. 7. 7) is the superficial muscle of the upper arm, aud arises by two heads which generally unite in the upper third of the arm, but occasional^- remain distinct nearly to their insertions. The long or outer [glenoid] head cannot be fully traced at present, since it arises within the capsular li- gament of the shoulder-joint from the top of the glenoid cavity, and also from the gle- noid ligament. Traversing the joint but excluded from the synovial cavity by a re- flection of synovial mem- brane, the tendon enters the bicipital groove of the hume- rus, and is seen to emerge from the capsular ligament and lie upon the tendon of the latissimus, and between the insertions of the pectora- lis major and teres major mus- cles. The short or inner [co- racoid] head arises from the coracoid process of the sca- pula in common with, but to the outer side of, the coraco- brachialis; and the two heads having united [to form a large fleshy belly], the tendon gives off an expansion [just above the elbow-joint], called the bicipital or semilunar fas- cia, to join the fascia on the upper and inner part of the forearm (Fig. 9, 16). [The student should examine this on his own arm. By seizing a heavy object such as the dissecting table, and endea- voring to lift it, by flexing the forearm to a right angle, this bicipital fascia is rendered very prominent, and the finger can be thrust far under its crescentic border. Its use is to act as a tensor of the fascia 4 Muscles of the Anterior Aspect of the Upper A km (from Wilsou). 1. Coracoid process of the scapula. 2. Coraco-clavicular ligament (trape- zoid^. 3. Coraco-acromial ligament. 4. Subscapulars. 5. Teres majur. 6. Coraco-brachialis. 7. Biceps. S. Upper end of the radius. 9. Brachialis anticus. 10. Internal head of the triceps.