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Function of coracobrachialis?
This muscle flexes and adducts the humerus. It is also a synergist of the pectoralis major
Where is the pectoral located in the body?
The pectoralis major is the large fan like muscle located on either side of the chest, originating from the sternal half of the clavical, the anterior surface of the sternum, and the cartilage of the first seven ribs, and inserting in the bicepital groove of the humerus. Therefore, its primary actions deal with movements of the shoulder joint. It adducts, flexes, and medially rotates the humerus. There is also a pectoralis minor, which is also located on the chest, but lies deep to the pectoralis major. It originates on ribs 3-5, and inserts on the coracoid process of the scapula. The pectoralis minor works on the scapula, drawing it toward the thorax so as to increase the range of motion of the shoulder.
What muscle flexes the humerus?
The biceps brachii muscle is responsible for flexing the humerus. It is a two-headed muscle located in the upper arm that helps in bending the elbow and also plays a role in shoulder flexion when the arm is rotated.
The only muscle capable of flexing the distal interphalangeal joints?
The only muscle capable of flexing the distal interphalangeal joints is the flexor digitorum profundus. This muscle originates from the ulna and interosseous membrane in the forearm and inserts on the distal phalanges of the fingers. It is responsible for flexing the distal interphalangeal joints while the flexor digitorum superficialis flexes the proximal interphalangeal joints.
How does the action of the fibularis longus in humans differ from tha of the fibularis tertius?
Inserts on the dorsum of the fifth metatarsal. When it contracts it dorsiflexes and everts the foot
What muscles involved in arm flexion?
arm flextion : Muscle Origin Insertion Action Coracobracialis Corocoid process of scapula Middle of medial shaft of humerus Flexes and adducts the humerus Biceps Brachii Short head- Coracoid process of scapula Long head- Supraglenoid tubercle of scapula Tuberosity of the radius and aponeurosis of biceps brachii Flexes elbow, supinates forearm, flexes shoulder joint Triceps Brachii Long head- Infraglenoid tubercle of scapula Lateral head- Posterior surface of proximal half of humerus Medial head- Posterior surface of distal half of humerus All heads- olecranon process of ulna Long head- Extends and adducts the shoulder All heads- Extend the forearm (elbow) Subclavius First rib and cartilage Inferior, lateral aspect of clavicle Elevates first rib, stabilizes sternoclavicular joint, draws clavicle down
What is the action of the coracobrachialis?
It contributes to adduction, horizontal adduction, and flexion of the humerus, enabling the arm to swing forwards, and it is a synergist of the pectoralis minor.
How do the biceps quadriceps hamstrings deltoids gluteus maximus gastrocnemuis abdominals obliques pectorals trapezuis and erector spines work in order to produce movement?
Biceps flex the elbow. Quadriceps extend the knee. Hamstrings flex the knee. Deltoids abduct the humerus. Gluteus maximus extends the femur. Gastrocnemius flexes the knee and plantar flexes the ankle. Abdominal obliques flex and rotate the trunk. Pectoralis major adducts the humerus. Trapezius does many actions, mostly adduct and upwardly rotates scapula. Erector spinae erect the spine.
What muscle will flex the hand?
There are several muscles involved in flexing the hand. - Palmaris longus (flexes hand) - Flexor carpi radialis (flexes and abducts hand) - Flexor carpi ulnaris (flexes and adducts hand) - Flexor digitorum superficialis (flexes proximal and middle phalanges, flexes hand) - Flexor digitorum profundus (flexes phalanges and hand) - Flexor pollicis longus (flexes thumb and hand) - Flexor pollicis brevis (flexes thumb) There are also a few more I did not include that flex specific digits of the hand
What is the Joint of the gastrocnemius?
It plantar flexes the foot at the ankle and flexes the leg at the knee.
What muscle flexes and abducts hand at the wrist?
There are several muscles involved in flexing the hand. - Palmaris longus (flexes hand) - Flexor carpi radialis (flexes and abducts hand) - Flexor carpi ulnaris (flexes and adducts hand) - Flexor digitorum superficialis (flexes proximal and middle phalanges, flexes hand) - Flexor digitorum profundus (flexes phalanges and hand) - Flexor pollicis longus (flexes thumb and hand) - Flexor pollicis brevis (flexes thumb) There are also a few more I did not include that flex specific digits of the hand
What is a purpose of a joint?
its a joint that flexes
