List Anatomy – S
The skeleton of the trunk is part of the axial skeleton. It is represented by the vertebral column, or vertebrae, and thorax.
In the process of human evolution, the upper limbs became the organs of labor. The lower extremities perform the functions of support and movement, keep the human body in an upright position.
Single lymphoid nodules (noduli lymphoidei solitarii) are found in the thickness of the mucosa and in the submucosa of the digestive system (pharynx, esophagus, stomach, small intestine, large intestine, gallbladder), respiratory organs (larynx, trachea, major, lobar and segmental bronchi ), as well as in the walls of the ureters, bladder, urethra.
The sigmoid colon (colon sigmoideum) begins at the level of the left iliac crest and passes into the rectum at the level of the head of the sacrum. The length of the gut is from 15 to 67 cm (on average - 54 cm).
The brachial muscle (m.brachialis) begins on the lower two thirds of the humerus body between the deltoid tuberosity and the joint joint capsule of the elbow joint, on the medial and lateral intermuscular septum of the shoulder.
The shoulder joint (art humeri) is formed by the articular cavity of the scapula and the head of the humerus. The articular surface of the head is spherical, almost 3 times larger than the flat surface of the articular cavity of the scapula.
The brachial artery (a. Brachialis) is a continuation of the axillary artery. It starts at the level of the lower edge of the large pectoral muscle and lies here in front of the beak-brachial muscle.
The lower leg has two bones. The tibia is medially located, laterally - the fibula. Each bone has a body and two ends. The ends of the bones are thickened and bear the surfaces for the connection with the femur at the top (tibia) and with the bones of the foot underneath.
The spinal cord is surrounded by three membranes of mesenchymal origin. External - a hard shell of the spinal cord. Behind it lies the middle - arachnoid shell, which is separated from the previous subdural space.
The brain, as well as the dorsal one, is surrounded by three medullary membranes. These connective tissue sheets (membranes) cover the brain. The outermost of these shells is the hard shell of the brain.
The sensory organs are anatomical formations (sensitive nerve endings, nerve fibers and cells) that perceive the energy of external action, transform it into a nerve impulse and transmit this impulse to the brain.
The seminal vesicula (vesicula, s.glandula seminalis) is a paired organ located in the pelvic cavity lateral from the ampulla of the vas deferens, from the top of the prostate, from behind and from the side of the bottom of the bladder.
The semitendinous muscle (m.semitendinosus) begins with the long head of the biceps femoris on the sciatic hillock.
Semimembranous muscle (m.semimembranosus) begins on the ischium with a flat, long tendon. The tendon plate continues down and, tapering in the distal direction, passes at the mid-thigh level into the muscular abdomen.
The spermatic cord (funiculus spermaticus) is formed during the lowering of the testicle. It is a round string 15-20 cm long, extending from the deep inguinal ring to the upper end of the testicle.
Sebaceous glands (glandulae sebacae) are simple alveolar in structure glands, are located shallowly, at the border of the papillary and reticular layers of the dermis. Protocols of the sebaceous glands usually open in the hair follicle.
Scrotum (scrotum) is a protrusion of the anterior abdominal wall, which has two disconnected chambers for the male genital glands. The scrotum is located down and behind the root of the penis.
The sclera is 5% of the dense fibrous membrane of the eye and performs a protective and skeletal function, ie, it determines and ensures the shape of the eye. It is opaque, has a shiny white, tendon-like appearance.
Scapula is a flat bone of triangular shape. It is attached to the thorax from its posterolateral side at the level of II to VII ribs. Three angles are distinguished at the scapula: the inferior angle (ingulus inferior), the lateral (angulus lateralis) and the upper (angulus superior).
The sartorius muscle (m.sartorius) begins on the superior anterior iliac spine. The muscle crosses obliquely from top to bottom and medially the anterior surface of the thigh. It is attached, passing into the tendon stretching, to the tuberosity of the tibia and to the fascia of the shank.