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The anatomical snuffbox, or radial fossa, (in Latin Foveola Radialis), is a triangular deepening on the radial, dorsal aspect of the hand - at the level of the carpal bones, specifically, the scaphoid and trapezium bones forming the floor. The name originates from the use of this surface for placing and then snorting powdered tobacco, or “snuff”. image:hand. ...
Section of an artery For other uses, see Artery (disambiguation). ...
In human anatomy, the radial artery is the main blood vessel, with oxygenated blood, of the lateral aspect of the forearm. ...
In the circulatory system, a vein is a blood vessel that carries blood toward the heart. ...
This vein is located in the superficial fascia along the anterolateral surface of the biceps brachii muscle and is often visible through the skin. ...
Nerves (yellow) Nerves redirects here. ...
The radial nerve is a nerve in the human body, that supplies the arm, the forearm and the hand. ...
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The anatomical planes The anatomical position is a schematic convention for describing the relative morphology of the human body. ...
In anatomy, the dorsum is the upper or back side of an animal, as opposed to the ventrum. ...
In human anatomy, the carpal bones are the bones of the human wrist. ...
Shredded tobacco leaf for pipe smoking Tobacco can also be pressed into plugs and sliced into flakes Tobacco is an agricultural product processed from the fresh leaves of plants in the genus Nicotiana. ...
Snuff can refer to any of the following: Fine-ground smokeless tobacco, intended for use by being sniffed or snorted into the nose Swedish snus tobacco, used between the cheek and upper gums American moist snuff, or dipping tobacco, placed between in the teeth and lower gums. ...
The boundaries
The medial border of the snuffbox is the tendon of the extensor pollicis longus and the lateral border is a pair of parallel and intimate tendons, of the extensor pollicis brevis and the abductor pollicis longus. Accordingly, the anatomical snuffbox is most visible, having a more pronounced concavity, during thumb extension. The styloid process of the radius forms the proximal border while the distal border is formed by the approximate apex of the schematic snuffbox isosceles triangle. The floor of the snuffbox varies depending on the position of the wrist, but both the trapezium and primarily the scaphoid can be palpated. A tendon (or sinew) is a tough band of fibrous connective tissue that connects muscle to bone and is built to withstand tension. ...
The Extensor pollicis longus muscle is a muscle of the human body. ...
The Extensor pollicis brevis muscle is a muscle of the human body. ...
The Abductor pollicis longus muscle is a muscle of the human body. ...
In metaphysics, extension is the property of taking up space; see Extension (metaphysics). ...
Remote Authentication Dial In User Service (RADIUS) is an AAA (authentication, authorization and accounting) protocol for applications such as network access or IP mobility. ...
In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ...
In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ...
The word trapezium has several meanings: A trapezium refers to either of two geometric figures. ...
The scaphoid bone of the wrist is found on the thumb side of the hand, within the anatomical snuffbox. ...
Neurovascular anatomy Superficial to these lies the radial artery, which passes through the anatomical snuffbox on its course from the normal radial pulse detecting area, to the proximal space in between the first and second metacarpals to contribute to the superficial and deep palmar arches. The cephalic vein arises within the anatomical snuffbox, while the dorsal cutaneous branch of the radial nerve can be palpated by stroking along the extensor pollicis longus with the dorsal aspect of a fingernail. In human anatomy, the radial artery is the main blood vessel, with oxygenated blood, of the lateral aspect of the forearm. ...
The metacarpus is the intermediate part of the hand skeleton that is located between the fingers distally and the carpus which forms the connection to the forearm. ...
This vein is located in the superficial fascia along the anterolateral surface of the biceps brachii muscle and is often visible through the skin. ...
Pathology The radius and scaphoid articulate deep to the snuffbox to form the basis of the wrist joint. In the event of a fall onto an outstretched hand, this is the area through which the brunt of the force will focus. This results in these two bones being the most often fractured of the wrist. In a case where there is localized tenderness within the snuffbox, knowledge of wrist anatomy leads to the speedy conclusion that the fracture is likely to be of the scaphoid. This is understandable as the scaphoid is a small, oddly shaped bone whose purpose is to facilitate mobility rather than confer stability to the wrist joint. In the event of inordinate application of force over the wrist, this small scaphoid is clearly likely to be the weak link. Interestingly, scaphoid fracture is one of the most frequent causes of medico-legal issues. Look up Tenderness in Wiktionary, the free dictionary Tenderness is term most often expressing significantly positive form of interaction between lovers, but also exist other examples: tenderly care by parents to kids tenderly care by nurse to patients tenderness (more exactly soft, precise) manipulation by person with important objects etc. ...
Anatomical peculiarity An interesting anatomical anomaly in the vascular supply to the scaphoid is the area to which the blood supply is first delivered. Blood enters the scaphoid distally. Consequently, in the event of a fracture the proximal segment of the scaphoid will be devoid of a vascular supply, and will - if action is not taken - avascularly necrose within a sufferer's snuffbox. Due to the small size of the scaphoid and its shape, it is difficult to determine, early on, whether or not the scaphoid is indeed fractured with an x-ray. Further complications include; carpal instability (ligament disruption) and fracture-dislocations. Necrosis (in Greek ÎεκÏός = Dead) is the name given to accidental death of cells and living tissue. ...
A sound understanding of the anatomical relationships within the wrist allows for rapid, informed, and logical appreciation of dysfunction.
Additional images Tendons of forefinger and vincula tendina. Image File history File links Gray416. ...
| The mucous sheaths of the tendons on the back of the wrist. Image File history File links Size of this preview: 400 × 600 pixelsFull resolution (467 × 700 pixel, file size: 47 KB, MIME type: image/png) File historyClick on a date/time to view the file as it appeared at that time. ...
| The veins on the dorsum of the hand. Image File history File links No higher resolution available. ...
| Palm of left hand, showing position of skin creases and bones, and surface markings for the volar arches. Image File history File links Gray1237. ...
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External links | General anatomy of upper limbs | | Arm | Clavipectoral triangle • spaces (Quadrangular space, Triangular space, Triangular interval) • Axilla • Axillary sheath • Anterior axillary fold • fascia (Axillary, Brachial) • compartment of arm (Posterior, Anterior) • intermuscular septa (Lateral, Medial) Dartmouth College is a private, coeducational university located in Hanover, New Hampshire, USA. Incorporated as Trustees of Dartmouth College,[6][7] it is a member of the Ivy League and one of the nine colonial colleges founded before the American Revolution. ...
Dorlands Medical Dictionary was first published in 1890 as the American Illustrated Medical Dictionary including 770 pages. ...
List of bones of the human skeleton Human anatomy is primarily the scientific study of the morphology of the adult human body. ...
In humans, the upper limb is an anatomical term for the limb that is attached to the pectoral girdle. ...
Look up ARM in Wiktionary, the free dictionary. ...
The clavipectoral triangle (or deltopectoral triangle) is an anatomical triangle bordered by the following structures: pectoralis major deltoid clavicle It contains the cephalic vein. ...
The quadrangular space is a location in the arm which is bounded by the Subscapularis and Teres minor above, the Teres major below, the long head of the Triceps brachii medially, and the surgical neck of the humerus laterally. ...
The triangular space contains the scapular circumflex vessels. ...
The triangular interval is the space between the long head of the triceps brachii and the humerus, just inferior to the teres major. ...
For the bowling style in cricket, see underarm bowling. ...
The first portion of the axillary artery is enclosed, together with the axillary vein and the brachial plexus, in a fibrous sheath—the axillary sheath—continuous above with the deep cervical fascia. ...
There are very few or no other articles that link to this one. ...
Fascia is specialized connective tissue layer which surrounds muscles, bones, and joints, providing support and protection and giving structure to the body. ...
The pectoral fascia is very thin over the upper part of the Pectoralis major, but thicker in the interval between it and the Latissimus dorsi, where it closes in the axillary space and forms the axillary fascia. ...
The Brachial Fascia (deep fascia of the arm) is continuous with that covering the Deltoideus and the Pectoralis major, by means of which it is attached, above, to the clavicle, acromion, and spine of the scapula; it forms a thin, loose, membranous sheath for the muscles of the arm, and...
Cross-section through the middle of upper arm. ...
The posterior compartment of the arm contains muscles which are all supplied by the radial nerve. ...
The anterior compartment of the arm is known as the flexor compartment as flexion is its main action. ...
The lateral intermuscular septum extends from the lower part of the crest of the greater tubercle, along the lateral supracondylar ridge, to the lateral epicondyle; it is blended with the tendon of the Deltoideus, gives attachment to the Triceps brachii behind, to the Brachialis, Brachioradialis, and Extensor carpi radialis longus...
The medial intermuscular septum, thicker than the lateral intermuscular septum, extends from the lower part of the crest of the lesser tubercle of the humerus below the Teres major, along the medial supracondylar ridge to the medial epicondyle; it is blended with the tendon of the Coracobrachialis, and affords attachment...
| | Forearm | Cubital fossa (Bicipital aponeurosis) • common tendons (Extensor, Flexor) • Interosseous membrane of the forearm • compartment of forearm (Posterior, Anterior) • Antebrachial fascia • Carpal tunnel // The Human Forearm The forearm is the structure on the upper limb, between the elbow and the wrist. ...
In anatomy, the cubital fossa is the area on the front side of the elbow joint of the arm. ...
Opposite the bend of the elbow the tendon of the biceps brachii gives off, from its medial side, a broad aponeurosis, the lacertus fibrosus (aponeurosis of biceps muscle of arm, bicipital fascia) which passes obliquely downward and medialward across the brachial artery, and is continuous with the deep fascia covering...
The common extensor tendon is a tendon shared by a number of extensor muscles in the forearm. ...
The common flexor tendon is a tendon shared by a number of superficial flexor muscles in the forearm. ...
The interosseous membrane of the forearm is a fibrous sheet that connects the radius and the ulna. ...
The posterior compartment of the forearm contains the following muscles: E/I refers to extrinsic or intrinsic. The Brachioradialis, flexor of the forearm, is unusual in that it is located in the posterior compartment, but it is actually in the anterior portion of the forearm. ...
The anterior compartment of the forearm contains the following muscles: E/I refers to extrinsic or intrinsic. Compartment syndrome Muscles of upper limbs VERTEBRAL COLUMN: trapezius - latissimus dorsi - rhomboid major - rhomboid minor - levator scapulae ANTERIOR AND LATERAL THORACIC WALLS: pectoralis major - pectoralis minor - subclavius - serratus anterior SHOULDER: deltoid - rotator cuff...
The antebrachial fascia (or antibrachial fascia) continuous above with the brachial fascia, is a dense, membranous investment, which forms a general sheath for the muscles in this region; it is attached, behind, to the olecranon and dorsal border of the ulna, and gives off from its deep surface numerous intermuscular...
This article is about the connective tissue. ...
| | Hand | Anatomical snuff box • reticula of the hand (Extensor, Flexor) • Finger • Extensor expansion • Palmar aponeurosis For other uses, see Hand (disambiguation). ...
The extensor retinaculum (dorsal carpal ligament) is an anatomical term for the thickened part of the antebrachial fascia that holds the tendons of the extensor muscles in place. ...
The flexor retinaculum (transverse carpal ligament, or anterior annular ligament) is a strong, fibrous band, which arches over the carpus, converting the deep groove on the front of the carpal bones into a tunnel, the carpal tunnel, through which the Flexor tendons of the digits and the median nerve pass. ...
This article does not cite any references or sources. ...
An extensor expansion (dorsal expansion, dorsal hood) is an anatomical term that refers to the flattened tendons (aponeurosis) of extensor muscles that run into the back of the hand. ...
The palmar aponeurosis (palmar fascia) invests the muscles of the palm, and consists of central, lateral, and medial portions. ...
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