Third, torso muscle
Torso muscle including neck muscle, musculi dorsi, musculus pectoralis, musculi abdominis, diaphragm and perineal muscles and so on.
(one) neck muscle
1. the chest locks the mastoid process muscle
Located at the pate both sides, one side contraction may cause to with the side incline, the face to change the opposite side. After the two-sided contraction may cause, supine.
2. on tongue bone myo- group
Located at between tongue bone and mandible.
3. under tongue bone myo- group
Located at between tongue bone and breastbone.
(two) musculi dorsi
1. musculus trapezius
For the item of back triangle flat muscle, affects in the shoulder blade. The myo- contraction may cause the shoulder blade completely to the spinal column stem for stem.
2. musculus latissimus dorsi
Is lateral for the chest and lower part the back the platysma, affects in the arm. After may cause the arm adduction, turn on lathe, extends. The athlete participates when the relay race baton pass in is the arm adduction, turns on lathe and latter extends.
(three) musculus pectoralis
1. chest big muscle
In front of the chest gallery, affects Yu Bi. In may cause the arm adduction, turn on lathe, the upper limb is fixed when may on raise the torso.
2. musculus serratus anterior
Has function which helps raises
3. intercostal muscle
Including intercostal in outside muscle and intercostal muscle. In the intercostal the myo- contraction may exhale, outside the intercostal the myo- contraction may inspire.
Located at chest and belly between. Including periphery diaphragm and central central tendon. The diaphragm contraction chest cavity expands, causes the inspiration, the diaphragm diastole chest cavity reduces, helps the expiration. On the diaphragm has three hiatuses, respectively is the hiatus esophageus, the aoricus and the venae cavae hole, three have the esophagus, the aorta and the vena cava inferior separately passes.
(five) musculi abdominis
Including outside abdomen front board abdomen musculus rectus and abdomen outside sidewall abdomen musculus obliquus, endo-abdominal musculus obliquus, abdomen musculus transversus and so on.
1. abdomen musculus rectus
Abdomen linea mediana both sides, on wide under narrow long muscle.
2. outside abdomen musculus obliquus
Before the abdomen, outside the sidewall flat muscle, the muscle ties by the outside declivity under (similar hand inserts pocket) inward.
3. endo-abdominal musculus obliquus
Outside the abdomen the musculus obliquus deep surface, the muscle ties by outside under assumes fan-shaped on inward.
4. abdomen musculus transversus
The endo-abdominal musculus obliquus deep surface, the muscle ties assumes the horizontal direction.
Outside the abdomen the musculus obliquus inserts the pocket Endo-abdominal musculus obliquus fan surface son
Abdomen musculus transversus, trousers waistband The front part is pasting continuously the board
Note: Outside inserts the pocket - to betroth children before they are born the musculus obliquus myo- to tie the direction. In the fan surface - betroths children before they are born the musculus obliquus myo- to tie the direction. The trousers waistband - betroths children before they are born the musculus transversus myo- to tie the direction. The board - has betrothed children before they are born the musculus rectus.
5. abdomen partial structure
Inguinal canal: Located at the ligamentum inguinale inside of above the half, is squint crevasse between the muscle and the fascia, long approximately 4~5cm, has four walls, two.
(1) four walls:①The front board, mainly the musculus obliquus aponeurosis constitutes by the abdomen outside.②The behind, constitutes by the abdomen fascia transversalis.③On the wall, by the endo-abdominal musculus obliquus and the abdomen musculus transversus arch lower limb, unites the tendon constitution.④The next wall, constitutes by the ligamentum inguinale.
Inguinal canal four walls
Front covers the pocket to cover Behind is pasting the waist piece son
Above is going against the horizontal brail Under is stepping on the ditch ligament
Note: Outside the pocket covers - the pocket to betroth children before they are born the musculus obliquus, the pocket lid betroths children before they are born the musculus obliquus aponeurosis. The waist piece - trousers waistband betroths children before they are born the musculus transversus, the waist piece betroths children before they are born the musculus transversus deep surface the abdomen fascia transversalis. The horizontal brail - betroths children before they are born the musculus transversus, the endo-abdominal musculus obliquus arch lower limb and the union tendon. The ditch ligament - refers to the ligamentum inguinale.
(2) two:①Boring, calls the inguinal canal deep link, also calls the abdomen link.②The collar extension, calls the inguinal canal shallow link, also calls the skin lower ring.
(3) adopts the structure:①The male, has the fine rope.②The female, has the womb round ligament.
6. waist Fang Ji: Located at abdomen behind.
Torso myo- main myo- function
Musculus trapezius, shoulder depending on keel The musculus latissimus dorsi, can relay
The chest big muscle, may raise qu The musculus serratus anterior, helps lifts
The intercostal muscle, shouts the inspiration Abdomen front board, abdomen musculus rectus
Outside sidewall, three flat muscles Outside in slanting, horizontally most in
(six) perineal muscles
Is seals up the pelvis minor=true pelvis end opening the muscle, mainly has the anus levator, the perineum deep musculus transversus and the urethra sphincter and so on.
Trough diaphragm: By the anus levator with above, under fascia constitutes together, behind seal pelvis minor=true pelvis end opening.
Urogenital diaphragm: By the perineum deep musculus transversus and the urethra sphincter with above, under the fascia constitute together, seal pelvis minor=true pelvis end opening front part.
Trough diaphragm and urogenital diaphragm
The apertura pelvis inferior two diaphragms seal Muscle together membrane two
Trough diaphragm after clamps raises the anus Urinates the diaphragm to clamp deeply before horizontal
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