List Anatomy – D
Duodenum (duodenum) - the initial section of the small intestine, located on the back wall of the abdominal cavity. The duodenum starts from the pylorus, ends with a duodenum-jejunal bend located at the left edge of the II lumbar vertebra.
In the human body, there are numerous hormone-producing cells originating from neural cristae neuroblasts, ecto- and endoderms. These cells produce neuroamines and oligopeptides that have a hormonal and biologically active effect.
Diaphragm (diaphragma, sm phrenicus) - a movable muscular-tendon septum between the thoracic and abdominal cavities. The diaphragm has a domed shape, due to the position of the internal organs and the difference in pressure in the thoracic and abdominal cavities. The convex side of the diaphragm is directed into the thoracic cavity, concave - down, into the abdominal cavity.
The development of the external nose and nasal cavity is associated with the formation of the visceral skeleton of the head, oral cavity and olfactory organs. The development of the larynx, trachea and bronchi occurs in connection with the transformation of the primary gut of the embryo. On the ventral wall of the primary intestine, in the region of the pharyngeal and trunk intestine, a saccular protrusion is formed.
Starting from the 20th day of intrauterine development, the intestinal endoderm in the fetus's body contracts into the tube, forming the primary gut. The primary intestine is closed in its anterior and posterior parts and is located anterior to the chord.
Development of the bladder. The laying of the bladder in a 7 week embryo is associated with the transformation of the cloaca, allantoic (urinary sac) and caudal divisions of the primary kidney ducts.
Descending colon (colon descendens) begins from the left bend of the colon down and passes into the sigmoid colon at the level of the iliac crest of the ilium.
The deltoid muscle (m.deltoideus) is located superficially, directly under the skin, covers the shoulder joint from the lateral side, front, top and back, forms a characteristic roundness of the shoulder).
Deep neck muscles are divided into lateral and medial (pre-invertebrate) groups. The lateral group is represented by three staircases. According to their location, the front, middle and back stair muscles are distinguished.