Our opposable thumb is essential to our advancement as a species. It is best studied broken down into its components: regions, joints, muscles, nerves, and blood vessels. Table 4.13 shows the origin, insertion, and action of the muscles that move the thigh.
Coracobrachialis muscle : The beauty of this muscle is that its name explains its origin, insertion, and action. The insertion is the point of attachment that moves when the muscle contracts (Figure 10-5). We will also discuss the clinical relevance of the upper limb.Median nerve (1st and 2nd lumbricals), deep branch of ulnar nerve (3rd and 4th lumbricals)It acts to draw the scapula lateral, forward, downward, and stabilizes the scapula. Learn vocabulary, terms, and more with flashcards, games, and other study tools. It is innervated by the medial and lateral pectoral nerves.Memorize the superficial forearm flexors using the following mnemonic!Here's a mnemonic that summarizes the brachioradialis and helps you to remember it.Flexor retinaculum and tubercle of trapezium and scaphoid bonesSimplify your retention of the thenar muscles by learning the following mnemonic!Here's a mnemonic to help you remember the innervation of the lumbricals more easily!Use the following mnemonic to remember the origins of the biceps brachii muscle.This injury is commonly called ‘baseball finger’.
The tract inserts into the upper end of tibia and helps brace the knee laterally. Arteries of upper limb Axillary artery Continuation of subclavian artery at lateral border of first rib Becomes brachial artery at lower border of teres major Divided into three parts by overlying pectoralis minor First portion, above muscle－gives rise to thoracoacromial a. The closer we move to the hand the more muscles we begin to have, as our movements require finer and finer gradations. However, it prevents the humeral head from slipping downwards. The upper limb (upper extremity) is truly a complex part of human anatomy. It commonly follows a FOSH.This is a bony deformity of the finger or toes associated with rheumatoid arthritis and trauma to the end of the extended finger. BrachioRadialis follows the BR ruleThenar eminence, Hypothenar eminence, Interossei, LumbricalsDo you want an efficient way to remember the arm muscles? This deep muscle arises from the coracoid process of the scapula and inserts onto the medial surface of the humeral diaphysis (shaft).
Pectoralis Major Medial half of clavicle, front of sternum, costal cartilage Crest of greater tubercle (Lateral lip of bicipital groove) Horizontally adduct, medially rotate at shoulder Medical and lateral pectoral Pectoralis Minor Ribs 2-5 Coracoid process Protract, depress, medially rotate scapula and elevate ribs Medial pectoral Serratus Anterior Ribs 1-8 …
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