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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.
A surgical suture, also known as a stitch or stitches, is a medical device used to hold body tissues together and approximate wound edges after an injury or surgery. Application generally involves using a needle with an attached length of thread. There are numerous types of suture which differ by needle shape and size as well as thread material ...
The middle stitch is a vertical mattress the others simple interrupted stitches. The vertical mattress stitch, often called vertical Donati stitch (named after the Italian surgeon Mario Donati), [1] is a suture type used to close skin wounds. The advantages of the vertical mattress suture are that it provides closure for both deep and ...
There are several methods that can be implemented to achieve primary closure of a wound, including suture, staples, skin adhesive, and surgical strips. Suture is the most frequently used for closure. [27] There are many types of suture, but broadly they can be categorized as absorbable vs non-absorbable and synthetic vs natural.
Non-absorbables are frequently used inside the body when long-term strength is needed, particularly in cardiovascular surgery. E.g. replacing a peice of aorta or implanting coronary bypasses. Absorbable sutures do have a controlled time period of dissolution - different materials take different time to break down. E.g. chromic gut takes 7-14 days.
While the suture is being put in place a knot is used to secure the suture. Tying the knot may be done inside the body or outside the body. Of these two options knot tying inside the body takes some time to learn because the surgeon is required to use laparoscopic instrumentation rather than their fingers to loop the suture.
A suture is a type of fibrous joint that is only found in the skull (cranial suture). The bones are bound together by Sharpey's fibres . A tiny amount of movement is permitted at sutures, which contributes to the compliance and elasticity of the skull.
Surgical suture on needle holders. Catgut suture in a vintage glass dispenser. Catgut suture is a type of surgical suture made of twisted strands of purified collagen taken from the small intestine of domesticated ruminants or beef tendon. It is naturally degraded by the body's own proteolytic enzymes.