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Abductor Muscle (other)
Abductor muscle refers to any muscle that causes abduction and may refer to: * Abductor digiti minimi muscle of hand * Abductor digiti minimi muscle of foot * Abductor hallucis muscle * Abductor pollicis brevis muscle * Abductor pollicis longus muscle See also * List of abductors of the human body Abduction is an anatomical term of motion referring to a movement which draws a limb out to the side, away from the median sagittal plane of the body. It is thus opposed to adduction. Upper limb Arm and shoulder * of arm at shoulder (raising ... {{disambiguation Abductors (muscles) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muscle
Skeletal muscles (commonly referred to as muscles) are organs of the vertebrate muscular system and typically are attached by tendons to bones of a skeleton. The muscle cells of skeletal muscles are much longer than in the other types of muscle tissue, and are often known as muscle fibers. The muscle tissue of a skeletal muscle is striated – having a striped appearance due to the arrangement of the sarcomeres. Skeletal muscles are voluntary muscles under the control of the somatic nervous system. The other types of muscle are cardiac muscle which is also striated and smooth muscle which is non-striated; both of these types of muscle tissue are classified as involuntary, or, under the control of the autonomic nervous system. A skeletal muscle contains multiple fascicles – bundles of muscle fibers. Each individual fiber, and each muscle is surrounded by a type of connective tissue layer of fascia. Muscle fibers are formed from the fusion of developmental myoblasts in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abduction (kinesiology)
Motion, the process of movement, is described using specific anatomical terms. Motion includes movement of organs, joints, limbs, and specific sections of the body. The terminology used describes this motion according to its direction relative to the anatomical position of the body parts involved. Anatomists and others use a unified set of terms to describe most of the movements, although other, more specialized terms are necessary for describing unique movements such as those of the hands, feet, and eyes. In general, motion is classified according to the anatomical plane it occurs in. ''Flexion'' and ''extension'' are examples of ''angular'' motions, in which two axes of a joint are brought closer together or moved further apart. ''Rotational'' motion may occur at other joints, for example the shoulder, and are described as ''internal'' or ''external''. Other terms, such as ''elevation'' and ''depression'', describe movement above or below the horizontal plane. Many anatomic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abductor Digiti Minimi Muscle Of Hand
In human anatomy, the abductor digiti minimi (abductor minimi digiti, abductor digiti quinti, ADM) is a skeletal muscle situated on the ulnar border of the palm of the hand. It forms the ulnar border of the palm and its spindle-like shape defines the hypothenar eminence of the palm together with the skin, connective tissue, and fat surrounding it. Its main function is to pull the little finger away from the other fingers (i.e. abduction). Structure The abductor digiti minimi arises from the pisiform bone, the pisohamate ligament, and the flexor retinaculum. Its distal tendon ends in three slips that are inserted into the ulnopalmar margin of the proximal phalanx, the palmar plate of the metacarpophalangeal joint, and the sesamoid bone when present. Some fibers insert into the finger's dorsal aponeurosis, which is why the muscle acts similar to a dorsal interosseus muscle. Additionally, the ulnar-most portion of the tendon inserts into the little finger's digital cord, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abductor Digiti Minimi Muscle Of Foot
The abductor digiti minimi (abductor minimi digiti, abductor digiti quinti) is a muscle which lies along the Anatomical terms of location#Left and right (lateral), and medial, lateral (outer) border of the foot, and is in relation by its Anatomical terms of location#Left and right (lateral), and medial, medial margin with the lateral plantar artery, lateral plantar vein, vein and Lateral plantar nerve, nerves. Its homolog in the arm is the Abductor digiti minimi muscle of hand, abductor digiti minimi muscle in the hand. Origin and insertion It arises, by a broad origin, from the lateral process of the tuberosity of the calcaneus, from the under surface of the calcaneus between the two processes of the tuberosity, from the forepart of the medial process, from the plantar aponeurosis, and from the medial intermuscular septum of thigh, intermuscular septum between it and the flexor digitorum brevis. Its tendon, after gliding over a smooth facet on the under surface of the base of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abductor Hallucis Muscle
The abductor hallucis muscle is an intrinsic muscle of the foot. It participates in the abduction and flexion of the great toe. Structure The abductor hallucis muscle is located in the medial border of the foot and contributes to form the prominence that is observed on the region. It is inserted behind on the tuberosity of the calcaneus, the flexor retinaculum, and the plantar aponeurosis. Its muscle body, relatively thick behind, flattens as it goes forward. It ends in a common tendon with the medial head of the flexor hallucis brevis that inserts on the medial surface of the base of the first proximal phalanx and its related sesamoid bone. Its medial surface is superficial and covered with the muscle's fascia and the skin. Nerve supply Abductor hallucis is supplied by the medial plantar nerve. The nerves that supply it enter the muscle from its upper border. Additional images Image:Sobo 1909 309.png, Superficial dissection of the sole of the foot, showing the medial emi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abductor Pollicis Brevis Muscle
The abductor pollicis brevis is a muscle in the hand that functions as an abductor of the thumb. Structure The abductor pollicis brevis is a flat, thin muscle located just under the skin. It is a thenar muscle, and therefore contributes to the bulk of the palm's thenar eminence. It originates from the flexor retinaculum of the hand, the tubercle of the scaphoid bone, and additionally sometimes from the tubercle of the trapezium. Running lateralward and downward, it is inserted by a thin, flat tendon into the lateral side of the base of the first phalanx of the thumb, and the capsule of the metacarpophalangeal joint. Nerve supply The abductor pollicis brevis is supplied by the recurrent branch of the median nerve (Roots C8-T1). Function Abduction of the thumb is defined as the movement of the thumb anteriorly, a direction perpendicular to the palm. The abductor pollicis brevis does this by acting across both the carpometacarpal joint and the metacarpophalangeal joint. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abductor Pollicis Longus Muscle
In human anatomy, the abductor pollicis longus (APL) is one of the extrinsic muscles of the hand. Its major function is to abduct the thumb at the wrist. Its tendon forms the anterior border of the anatomical snuffbox. Structure The abductor pollicis longus lies immediately below the supinator and is sometimes united with it. It arises from the lateral part of the dorsal surface of the body of the ulna, below the insertion of the anconeus, from the interosseous membrane, and from the middle third of the dorsal surface of the body of the radius.''Gray's Anatomy'' (1918), see infobox Passing obliquely downward and lateralward, it ends in a tendon, which runs through a groove on the lateral side of the lower end of the radius, accompanied by the tendon of the extensor pollicis brevis. The insertion is divided into a distal, superficial part and a proximal, deep part. The superficial part is inserted with one or more tendons into the radial side of the base of the first metacarp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Abductors Of The Human Body
Abduction is an anatomical term of motion referring to a movement which draws a limb out to the side, away from the median sagittal plane of the body. It is thus opposed to adduction. Upper limb Arm and shoulder * of arm at shoulder (raising arm) ** Supraspinatus 0-15 ** Deltoid 15-90 Hand and wrist * of hand at wrist ** Flexor carpi radialis ** Extensor carpi radialis longus ** Extensor carpi radialis brevis * of finger ** Abductor digiti minimi ** Dorsal interossei of the hand * of thumb ** Abductor pollicis longus ** Abductor pollicis brevis Lower limb *of femur at hip ** Gluteus maximus muscle ** Gluteus medius muscle **Gluteus minimus muscle **Sartorius muscle **Tensor fasciae latae muscle **Piriformis *of toe **Abductor hallucis ** Abductor digiti minimi **Dorsal interossei of the foot Other * vocal folds ** Posterior cricoarytenoid muscle * eyeball ** Lateral rectus muscle ** Superior oblique muscle ** Inferior oblique muscle The inferior oblique muscle or obliq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
