A system of human anatomy, general and special . is space pass the posterior cir-cumflex artery and veins, and circumflex nerve. A few of the deep fibres of the triceps, attached above to thehumerus and below to the capsule of the elbow-joint, have been namedsub-anconeus; they are analogous to the sub-crureus. Relations.—By its posterior surface with the deep and superficialfascia and integument. By its anterior surface with the superiorprofunda artery, musculo-spiral nerve, humerus, intermuscular apo-neuroses which separate it from the brachialis anticus, and with theelbow-joint. The scapular
A system of human anatomy, general and special . is space pass the posterior cir-cumflex artery and veins, and circumflex nerve. A few of the deep fibres of the triceps, attached above to thehumerus and below to the capsule of the elbow-joint, have been namedsub-anconeus; they are analogous to the sub-crureus. Relations.—By its posterior surface with the deep and superficialfascia and integument. By its anterior surface with the superiorprofunda artery, musculo-spiral nerve, humerus, intermuscular apo-neuroses which separate it from the brachialis anticus, and with theelbow-joint. The scapular head is in relation posteriorly with thedeltoid and teres minor; anteriorly with the subscapulars, teresmajor, and latissimus dorsi; and externally with the posterior circum-flex vessels and nerve. * A posterior view of the upper arm, showing the triceps muscle. 1. Its externalhead. 2. Its long, or scapular head. 3. Its internal, or short head. 4. The olecranonprocess of the ulna. 5. The radius. 6. The capsular ligament of the shoulder-joint. ANTERIOR BRACHIAL REGION. 249 Actions.—The triceps is an extensor of the fore- Fl»-118* arm. Anterior Brachial Region. Superficial layer. Pronator radii teres,Flexor carpi radialis,Palmaris longus,Flexor sublimis digitorum,Flexor carpi ulnaris. Dissection.—These muscles are brought intoview by making an incision through the integu-ment along the middle line of the fore-arm, cross-ing each extremity by a transverse incision, andturning aside the flaps. The superficial and deepfascia are then to be removed. The Pronator Radii Teres arises by twoheads ; one from the inner condyle of the hume-rus, fascia of the fore-arm, and intermuscular apo-neurosis ; the other from the coronoid processof the ulna; the median nerve passing betweenthem. Its tendon is flat and inserted into themiddle third of the oblique ridge of the two heads of this muscle are best examinedby cutting through that which arises from the in-ner condyle, and t
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectanatomy, bookyear1847
