Back Muscle For Short 3 Letters

Back Muscle For Short 3 Letters – Spinal processes of T7-L5 vertebrae, thoracolumbar fascia, iliac crest, 3 or 4 lower ribs and inferior angle of scapula

Adducts, extends and internally rotates the arm as the insertion is moved toward the origin. When looking at the origin muscle action for insertion, the lats are a very strong rotator of the trunk.

Back Muscle For Short 3 Letters

The latissimus dorsi (/l ə ˈ t ɪ s ɪ m ə s ˈ d ɔːr s aɪ / ) is a large, flat muscle in the back that stretches to the sides, behind the arm, and is partially covered by the trapezius on the arm. Back near the center line. The word latissimus dorsi (plural: latissimi dorsorum) comes from Latin and means “the broadest muscle of the back”, from “latissimus” (Latin: widest)’ and “dorsum” (Latin: back). The pair of muscles is known as “lats”, especially among bodybuilders. The latissimus dorsi is the largest muscle in the upper body.

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The latissimus dorsi is responsible for abduction, adduction, lateral extension also known as horizontal abduction (or horizontal extension),

Flexion from an extended position, and internal (medial) rotation of the shoulder joint. It also has a synergistic role in tension and lateral bending of the lumbar spine.

By bypassing the scapula joints and connecting directly to the spine, the actions the latissimi dorsi have in moving the arms can also affect the movement of the scapulae, such as turning them down during a pull-up.

The number of dorsal vertebrae to which it is attached varies between four and eight; The number of shore connections varies; The muscle fibers may or may not reach the apex of the iliac crest.

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A smooth muscle, the axillary arch, 7 to 10 cm long and 5 to 15 mm wide, occasionally arises from the upper edge of the latissimus dorsi about midway through the posterior fold of the axilla, and crosses the axilla in front of a vessel the axillary and nerves, to join under the surface of the tdon of the pectoralis major, the coracobrachialis or fascia above the biceps. This axillary arch crosses the axillary artery, just above the point usually chosen for ligation application, and may mislead the surgeon. It is common in about 7% of the population and can be easily identified by the transverse direction of its fibers. Guy and more. extensively described this muscular variation using MRI data and positively correlated its existence with symptoms of neurological impairment.

A fibrous slide usually runs from the upper border of the tdon of the Latissimus dorsi, near its insertion, to the long head of the triceps. It is occasionally muscular, and represents the dorsoepitrochlearis brachii of apes.

The latissimus dorsi crosses the lower angle of the scapula. A study found that out of 100 bodies analyzed:

The latissimus dorsi is innervated by the sixth, seventh and eighth cervical nerves via the thoracic (subscapular longus) nerve. Electromyography suggests that it is composed of six groups of muscle fibers that can be independently coordinated by the cranial nervous system.

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The latissimus dorsi assists in depression of the arm with the teres major and pectoralis major. It adducts, extends and internally rotates the shoulder. When the arms are in a fixed overhead position, the latissimus dorsi pulls the trunk up and forward.

It has a synergistic role in extension (posterior fibers) and lateral flexion (anterior fibers) of the lumbar spine, and assists as a muscle of forced expiration (anterior fibers) and an accessory muscle of inspiration (posterior fibers).

Most latissimus dorsi exercises simultaneously recruit the posterior fibers of the deltoid, the long head of the triceps, among many other stabilizing muscles. Compound exercises for the ‘lats’ usually include elbow flexion and td to recruit the biceps, brachialis and brachialis for this function. Depending on the line of attraction, the trapezius muscles can also be mobilized; Horizontal pulling movements like rows heavily recruit both the latissimus dorsi and the trapezius.

The strength/size/strength of this muscle can be trained with a variety of different exercises. Some of these include:

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It has been shown to contribute to chronic shoulder pain and chronic back pain.

Because the latissimus dorsi connects the spine to the humerus, stress in this muscle can manifest as suboptimal glomerular (shoulder) joint function leading to chronic pain or tdinitis in the tdinous fasciae that connect the latissimus dorsi to the thoracic and lumbar spine.

The latissimus dorsi is a potential muscle source for breast reconstruction surgery after mastectomy (eg Mannu flap)

For heart nipples with low cardiac output who are not candidates for a heart transplant, a procedure called cardiomyoplasty may support the failing heart. This procedure involves wrapping the latissimus dorsi muscles around the heart and stimulating them electronically in synchrony with ventricular systole.

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Injuries to the latissimus dorsi are rare. They occur disproportionately on baseball fields. A diagnosis can be achieved by imaging the muscle test and movement. An MRI of the shoulder girdle will confirm the diagnosis. Abdominal muscle injuries are treated with rehabilitation while tdon avulsion injuries can be treated with surgery, or rehabilitation. Regardless of treatment, it is best to return to play without functional losses. Almost every muscle is one part of an identical pair of bilateral muscles, found on both sides, resulting in about 320 pairs of muscles, as written in this article. However, it is difficult to define the exact number. Different sources group muscles differently, regarding what is defined as different parts of a single muscle or as several muscles. There are also vestigial muscles that are present in the body in some people but are absent in others, such as the palmaris longus muscle.

The muscles of the human body can be classified into several groups that include muscles related to the head and neck, muscles of the torso or trunk, muscles of the upper limbs and muscles of the lower limbs.

Action refers to the action of any muscle from the standard anatomical position. In other roles, other actions can be performed.

These muscles are described using anatomical terminology. The term “muscle” is omitted from the names of the muscles (except muscle is an origin or insertion), and the term “bone” is omitted from the nouns. The terms “artery” and “nerve” are both used when these structures are mentioned.

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Abducts cartilage and rotates laterally, pulling vocal cords away from the midline and forward, thus opening the Rima glottidis

When the neck is fixed, lift the first rib to aid breathing; When the rib is fixed, hand neck forward and sides and rotate it to the opposite side

Lower posterior intercostal arteries, subcostal artery, superior epigastric artery, inferior epigastric artery, superficial iliac artery, circumflex iliac artery, deep circumflex iliac artery, posterior lumbar arteries

Lower midline, external occipital protuberance, occipital ligament, medial part of upper occipital line, spinous processes of vertebrae C7-T12

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Clavicle head: anterior surface of medial half of clavicle head: anterior surface of sternum, six upper costal cartilages

Adducts and medially rotates the humerus, adducts the scapula anteriorly and the base of the clavicle: flexes the humerus Sternocostal: extends the humerus

The lesser trochanter of the femur (psoas major), the shaft under the lower trochanter (iliacus), the tendon of the psoas major and the femur (iliacus)

Bends the knee joint, rotates the leg laterally at the knee (when the knee is bent), extends the hip joint (long head only)

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Lateral plantar nerve (fourth intertransverse interval: superficial branch others: deep branch), first and second interosseous: lateral branch of deep fibular nerve

Proximal phalanges III-V – muscles cross the metatarsophalangeal joint of toes III-V so that the insertions correspond to the origin and there is no crossing between the toes Describe the criteria used to name skeletal muscles Explain how understanding the names of muscles helps describe the shapes, location and actions of different muscles

Taking the time to learn the Latin and Greek roots of words is essential to understanding the vocabulary of anatomy and physiology. When you understand the names of the muscles it will help you remember where the muscles are located and what they do (Figure 11.3.1, Figure 11.3.2 and Table 11.2).

Figure 11.3.1 – Overview of the Muscular System: In the front and back views of the muscular system above, superficial muscles (those on the surface) are shown on the right side of the body while deep muscles (those below the superficial muscles) are shown on the left half of the body. For the legs, superficial muscles are shown in the anterior view while the posterior view shows both superficial and deep muscles.

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Figure 11.32 – Understanding the name of a muscle from Latin: Below are two examples of how root words describe the location and function of muscles

Anatomists name skeletal muscles according to several criteria, each of which describes the muscle in some way. These include naming a muscle based on its shape, size, fiber direction, location, number of origins, or action.

Muscle names are based on many characteristics. The position of the muscle in the body is important. Some muscles are named according to their size and location, such as the gluteal muscles of the buttocks. Other muscle names can indicate the location in the body or bones that the muscle is attached to, such as the tibialis anterior. The shapes of certain muscles are unique; For example, the direction of the muscle fibers