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The trilobite body is divided into three major sections: a cephalon (head section) with eyes, mouthparts and sensory organs such as antennae; a thorax of multiple segments which are similar to each other; and a pygidium, or tail section. In many species, the cephalon had sutures running from back to front round the outside edges of the eyes.
The upper right square is the right hypochondriac region and contains the base of the right ribs. The upper left square is the left hypochondriac region and contains the base of the left ribs. The epigastric region is the upper central square and contains the bottom edge of the liver as well as the upper areas of the stomach.
of or pertaining to the upper chest, chest; the area above the breast and under the neck Latin thōrāx < Greek θώρᾱξ (thṓrāx), chest, cuirass thoracic spine, thorax: thromb(o)-of or relating to a blood clot, clotting of blood Greek θρόμβος (thrómbos), lump, piece, clot of blood thrombus, thrombocytopenia: thyr(o)-thyroid
The trunk of the body contains, from superior to inferior, the thoracic region encompassing the chest [1] the mammary region encompassing each breast; the sternal region encompassing the sternum; the abdominal region encompassing the stomach area; the umbilical region is located around the navel; the coxal region encompassing the lateral (side ...
The median plane, also called the midsagittal plane, which divides the body into left and right. [2] [6] This passes through the head, spinal cord, navel and, in many animals, the tail. [6] The sagittal planes, also called the parasagittal planes, which are parallel to the median plane. [1]
Quilting sutures reduce the risk of the skin–fat layer's separating from the deeper muscle layer, and having the separation fill up with fluid, by physically holding those layers together. Drains suck the two layers together so the body's natural "glue" ( fibrin ) and wound healing have a chance for a permanent bond.
However, the body can endure a large amount of pressure for brief periods of time. The amount of pressure on the tissue is based on the size of the area of the contact: the smaller the point of pressure, the greater effect it will have on the tissue. The position of instruments can cause damage to the body if pressure is not relieved ...
The chest drain stitch and corner stitch are variations of the horizontal mattress. [citation needed] Other stitches or suturing techniques include: Purse-string suture, a continuous, circular inverting suture which is made to secure apposition of the edges of a surgical or traumatic wound. [13] [14] Figure-of-eight stitch; Subcuticular stitch ...