The serratus anterior muscle originates at the 1st to 8/9th rib and inserts at the anterior surface of the medial border of the scapula (extending from the superior to inferior angles). The muscle is further divided into three parts: Superior part: 1st to 2nd rib → superior angle of the scapula.
What bones are the origin of the serratus anterior?
The serratus anterior is a muscle that originates on the surface of the 1st to 8th ribs at the side of the chest and inserts along the entire anterior length of the medial border of the scapula.
What is the origin of serratus ventralis?
The serratus ventralis is composed of cervical and thoracic portions that originate from the cervical vertebrae and ribs and converge to insert on the medial surface of the scapula to form the sling support that suspends the thorax between the forelimbs.
Where is serratus anterior muscle located?
The serratus anterior muscle is a fan-shaped muscle at the lateral wall of the thorax. Its main part lies deep under the scapula and the pectoral muscles.What is the origin and insertion of serratus posterior?
The serratus posterior inferior muscle originates from the spinous processes of vertebrae T11-L2 and their supraspinous ligaments. From there, it ascends anterolaterally to insert onto the inferoposterior aspect of ribs 9 to 12, just lateral to their angles.
What is the origin and insertion of the levator scapulae?
Origin and insertion Levator scapulae originates from the transverse processes of the first four cervical vertebrae. The muscle fibers descend laterally to insert at the superior angle and medial border of scapula, between the superior angle and base of the spine of scapula.
What is the origin of trapezius?
It originates on the occipital bone, the ligamentum nuchae, and the spinous processes of T01–T12. The trapezius inserts on the lateral third of the clavicle, as well as the acromion and scapular spine of the scapula. Image from Human Anatomy Atlas.
What is the origin of the pectoralis major?
OriginClavicular part: anterior surface of medial half of clavicle Sternocostal part: anterior surface of sternum, Costal cartilages of ribs 1-6 Abdominal part: Anterior layer of rectus sheathInsertionCrest of greater tubercle of humerusWhat is the origin and insertion of the deltoid?
OriginsLateral 1/3 of Clavicle (clavicular part), Acromion (acromial part), Spine of Scapula (spinal part) Mnemonic: ‘Deltoid helps you carry SACS’InsertionDeltoid tuberosity of humerusInnervationAxillary nerve (C5, C6)
What is the origin of latissimus dorsi?Origin of the latissimus dorsi is from spinous processes of thoracic T7–T12, thoracolumbar fascia, iliac crest and inferior 3 or 4 ribs, inferior angle of scapula and insertion on floor of intertubercular groove of the humerus.
Article first time published onWhat Innervates serratus anterior?
The serratus anterior muscle, known as the “boxer’s muscle,” receives its innervation solely from the long thoracic nerve, which when damaged results in paralysis of the muscle, a phenomenon known as a winged scapula.
How do you develop serratus anterior?
To do this move, get into a push-up position and straighten your arms as indicated in the photo below. Carefully slide your shoulder blades inward towards each other, then outwards away from each other. Repeat this movement ten times. You can also do a wall exercise for your serratus anterior.
Is tibialis anterior?
Tibialis anterior muscleOriginFrom the upper 1/2 or 2/3 of the lateral surface of the tibia and the adjacent interosseous membrane
Is proximal attachment the same as origin?
A muscle has two ends that each attach to bone: the muscle’s origin and the muscle’s insertion. … Muscle origin refers to a muscle’s proximal attachment—the end of the muscle closest to the torso. For example, the bicep muscle’s origin is located at the shoulder.
Where is the serratus posterior inferior located?
The muscle is situated at the junction of the thoracic and lumbar regions. It has an irregularly quadrilateral form, broader than the serratus posterior superior muscle, and separated from it by a wide interval.
What is the proximal attachment of serratus posterior superior?
Serratus posterior superior muscleOriginNuchal ligament (or ligamentum nuchae) and the spinous processes of the vertebrae C7 through T3InsertionThe upper borders of the 2nd through 5th ribsArteryIntercostal arteriesNerve2nd through 5th intercostal nerves
What is the origin of Sternocleidomastoid?
Sternocleidomastoid Attachments It originates on the anterior surface of the manubrium, and the superior border and anterior surface of the medial third of the clavicle. The SCM converges into one point and inserts on the lateral surface of the mastoid process and the nuchal line of the occipital bone.
What is the area between your neck and shoulder called?
The trapezius muscle is a large muscle bundle that extends from the back of your head and neck to your shoulder.
What is the origin and insertion of the supraspinatus muscle?
The supraspinatus muscle arises from the supraspinous fossa, a shallow depression in the body of the scapula above its spine. The supraspinatus muscle tendon passes laterally beneath the cover of the acromion. … The supraspinatus tendon is inserted into the superior facet of the greater tubercle of the humerus.
What is the origin and insertion of the biceps Brachii?
The biceps brachii muscle is one of the chief muscles of the arm. The origin at the scapula and the insertion into the radius of the biceps brachii means it can act on both the shoulder joint and the elbow joint, which is why this muscle participates in a few movements of the arm.
Where does the dorsal scapular nerve come from?
The dorsal scapular nerve originates from the fifth cervical spinal nerve (ventral ramus) in the majority (75%) of cases, within the posterior cervical triangle deep to the prevertebral fascia. However, this nerve may also receive some contributions from C4 to T1.
Which muscles move the glenohumeral joint and originate on the axial skeleton?
Nine muscles cross the shoulder joint to move the humerus. The ones that originate on the axial skeleton are the pectoralis major and the latissimus dorsi. The deltoid, subscapularis, supraspinatus, infraspinatus, teres major, teres minor, and coracobrachialis originate on the scapula.
Where is the anterior deltoid?
The anterior or clavicular fibers arise from most of the anterior border and upper surface of the lateral third of the clavicle. The anterior origin lies adjacent to the lateral fibers of the pectoralis major muscle as do the end tendons of both muscles.
What is the origin and insertion of the triceps muscle?
The triceps brachii muscle consists of a long, medial and lateral head, that originate from their respective attachments on the humerus and scapula, and insert via a common tendon on the ulna. The main function of triceps brachii is extension of the forearm at the elbow joint.
Is digital anterior or posterior?
ABcoxalhipcrurallegdigitalfingers, toesfemoralthigh
What is the origin and insertion of pectoralis minor?
OriginAnterior surface, costal cartilages of ribs 3-5InsertionMedial border and coracoid process of scapulaInnervationMedial and lateral pectoral nerves (C5-T1)
What is the origin of the subscapularis muscle?
The subscapularis muscle originates at the subscapular fossa and inserts into the lesser tubercle of the humerus. The muscle internally rotates and adducts the humerus. The bicep tendon lies underneath the subscapularis tendon in the bicipital groove.
What is the origin of the rhomboid major muscle?
OriginRhomboid minor: Nuchal ligament, Spinous processes of vertebrae C7-T1 Rhomboid major: Spinous process of vertebrae T2-T5InsertionRhomboid minor: Root (medial end) of spine of scapula Rhomboid major: Medial border of scapula (from inferior angle to root of spine of scapula)
What is the origin and insertion of infraspinatus?
OriginInfraspinous fossa of scapulaInsertionGreater tubercle of humerusActionShoulder joint: Arm external rotation; Stabilizes humeral head in glenoid cavity
Which muscle is called Boxer's muscle?
The serratus anterior, also known as the “boxer’s muscle,” is largely responsible for the protraction of the scapula, a movement that occurs when throwing a punch.
Why is serratus anterior important?
Serratus Anterior is a key muscle for keeping healthy function of the shoulder and plays a pivotal role in preventing neck pain and shoulder injuries. Just using stretches, massage and treatment for the area in pain will achieve little result. As will just trying to strengthen with isolated exercises.
