[Music] hello everyone and welcome back to another anatomy tutorial in this tutorial we will continue talking about the muscles of the neck and the shoulder garden in this tutorial we remove the flooring completely and so we can see the deep muscles of the neck and the muscles of the shoulder girdle so as we did before let's go through the muscles which we are going to dissect after that we can move to the dissection as you can see in this view we remove the left forelimb completely and let's go through the muscles so here highlighted in blue the cervical part of the trapezius muscle we moved dorsally so that we can see this muscle highlighted in green is the cervical part of the rhomboid muscle the next muscle here is the splenius muscle as we said before the splenous muscle originates from the knuckle ligament from the spinous processes of the first you know three or four or five thoracic vertebrae and in cells to the head and to the surface and vertebrae number one to number five but not number two the next muscle is the longitudinal muscle longisimos muscle is a very long muscle start from the hip bone here from the coxal tuberosity and extends longitudinally and cranially in forms here in the lumbar region the lumbar part of the longitudinal muscle or we can call it like longissimus lumborum and the thoracic part here we have the longisimos thoracis and here in this area we have the longisimos surfaces or the cervical part of the longisimos muscle and under this muscle here as we are going to dissect you know and see in the video there are two uh other parts of the logisimos muscle this is the longest muscle uh we're talking about the longisimos atlantis and longissimos capitus the next muscle here is the ventral serrate muscle ventral surgery muscle as we described before has two bars the thoracic part here originates from the lips and inserts to the serrated face of the scapula and the next part is the cervical part of the ventral serrate muscle originates from the transverse processes of the cervical vertebra and inserts to the same area of the scapula the separated face so this is the two parts of the serrate muscle this muscle here is one of the inspiratory muscles originate from the lips as you can see here and in cells to the knuckle ligament and the spinous processes of the thoracic thoracic vertebrae this is the um cranial dorsal serrate muscle or you can name it as the dorsal muscle cranial part or the cranial part of the dorsal muscle or cranial cranial dorsal serrated muscle the next muscle highlighted in red here the card doors are serrated muscle or the the the caudal part of the door that's a great muscle originates also from the ribs and cells to the thoracolumbar fascia and to the spinous processes as you can see here the main difference between these two muscles uh is the direction of muscle fiber so if you look at the cranial dorsal serrate muscle you can see that the contraction of this muscle will move the ribs away from the midline and so this will increase the volume of the thoracic cavity and that's why it's one of the inspiratory muscles while here the caudal door the serrated muscle the contraction of this muscle will move the ribs toward the midline and that's why it's expiratory muscle the next muscle we can see uh here is the muscle which is located between the ribs here between the lips we have two layers of muscle the external one the outside one is the external intercostal muscle which is an inspiratory muscle under this one if you remove the external intercostal muscle we can find or we can see the internal intercostal muscle which is like expiratory muscle here cowardly from the lips as you can see here to the linea alba and to the inguinal ligament we can see this very big muscle is the external abdominal oblique muscle and now let's move to a dissection this is the cervical part of the trapezius muscle here cranially superficially under the skin we can see the glydum has to eat muscle which is part of the brachiocephalic muscle so this is the collider mask to eat muscle in the horse here we have the homotransversarious muscle homo transfer various muscle as we said originate from the transverse process of the cervical vertebrae ventral to it and more deeply here we can see the omohyoid muscle the omohyoid muscle inserts to the hyoid bone as we described before and as we mentioned here in this area this muscle is located between exactly between the external jaguar vein this one and more deeply on the other side we have the common carotid artery and the vagosymbotic trunk so it forms like a protection of this artery and nerve you know if we want to collect blood from the external jugular vein so uh to be able to remove the forum completely there are a lot of muscles we have to cut as we can see here one of them is the pectoral muscles bacterial muscles includes the superficial pectoral muscle this one here is the superficial pectoral muscle with two parts and from here back we have the deep pectoral muscle this is the deep bacterial muscle the superficial bacterial muscle has also two parts this one here is the transfer spectral muscle and this one is the descending bacterial muscle this part here superficial bacterial muscle originates from the sternum greenhouse ternibra and sears to the cranial surface of the humerus here we have the cervical part of the trapezius muscle and here we have the thoracic part of the trapezius muscle as we described before both of them insert through the spine of the scapula as we said uh before to be able to remove the foreign one of the muscles which we have to cut in this area is the ventral serrate muscle the ventral serrate muscle is a huge muscle as you can see here divided into two parts the first part here at the cervical part of the serratus ventralis or serrated muscle originate from the transverse process of the cervical vertebra and inserts to the serrated face of the scapula this is the second part the thoracic part of the serratus ventralis originate from the ribs to the serrated face of the scapula now if we move the thoracic part of the trapezius muscle up now here we can see the serratus dorsal ascranas or cranial part of the dorsal serrate muscle with the fiber direction uh craniodorsali here originate from the ribs to the spinous process of the thoracic vertebra this muscle is one of the inspiratory muscles more cowardly here we can see uh the other part of the dorsal serrate muscle this is the serratus dorsalis caudalis with a fiber direction uh cloud dorsally called the dorsali this muscle originates from the ribs to the spinous processes of the thoracic vertebrae and to the torah collumbar fascia and this muscle is one of the expiratory muscles so now let's move the ventral serrated muscle so that we can see the more deeper located muscles this is the thoracic part of the ventral serrate muscle and this is the cervical part of the ventral serrated muscle and now here we can see the iliocostalis muscle which has two bars this one here is the thoracic part or we can name this muscle iliocostale thorazis where in the lumbar region of course we have another one the lumbar part now let's uh move the cervical part of the trapezius muscle up as you can see under the cervical part of the trapezius muscle we can see the cervical part of the rhomboid muscle this is the cervical part of the rhomboid muscle here in this area we remove the thoracic part of the rhomboid muscle both of them in cells to the medial surface of the scapular cartilage under this muscle here in this area we can see this very big muscle is the splenius muscle the splenius muscle as we described previously originates from the spinous process of the vertebr thoracic vertebrae from the neck ligament and in serous to the skull and to the transverse processes of the cervical vertebra let's move it also up the longissimus muscle is divided into different parts starting with the lumbar part of the muscles on the lumbar region the thoracic we had the thoracic part to the neck area we have under the iliocostal muscle as you can see here we have the cervical part of the longismos muscle or we can name it as longishimos surfaces longismos air fits as you can see there in serous to the transverse processes of the cervical vertebra this is all the longest muscle fits surfaces the other part of the longismos muscle this one here is the longismos atlantis from the name we can know that this muscle inserts to the wing of the atlas in this area here nogisimos atlantis more dorsally here we have the last part of the logisimos muscle which is the longismos capitas and from the name again this muscle inserts to the occipital bone of the skull the lungismos capitus or the capital part of the lungismos muscle between the spinous processes and the transverse processes of the thoracic and lumbar vertebra in this area in this angle we can find the spineless muscle in this area of the neck we can see this very good developed muscle in the horse the same spinal escapitis this is the semi spinales capitus the semi semi-spinal scabitus uh inserts to the neck ligament there and to the scale under this muscle there are some muscles of the spine of course small muscles we are going to cover in the next [Music] tutorials [Music] you