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Chronic venous insufficiency occurs when veins cannot pump enough blood back to the heart. [16] It results when the vein dilates secondary to a vein wall disease or when normal functioning of the valves, which serve to keep blood flowing to the heart and to prevent reflux, become damaged and/or incompetent (the dilation of a vein will prevent ...
Diagram of a typical insect leg. The typical and usual segments of the insect leg are divided into the coxa, one trochanter, the femur, the tibia, the tarsus, and the pretarsus. The coxa in its more symmetrical form, has the shape of a short cylinder or truncate cone, though commonly it is ovate and may be almost spherical.
Dragonfly anatomy The imago (adult stage) has a large head, well-developed, compound eyes , legs that facilitate catching prey (largely other insects) in flight, two pairs of long, transparent wings that move independently, and an elongated abdomen.
Buerger's test is performed in an assessment of arterial sufficiency. It is named after Leo Buerger . The vascular angle , which is also called Buerger's angle , is the angle to which the leg has to be raised before it becomes pale, whilst lying down .
Template: Diagnostic testing diagram. ... Download QR code; Print/export Download as PDF; Printable version; In other projects
File:Dragonfly morphology.png The basic morphology of a female dragonfly. This particular diagram is close in likeness to that of a Green Darner dragonfly. They can grow up to 3 inches in length with a wingspan of 4 and a half inches. It is identified as female due to the colour of its abdomen.
The all-black legs of the ruddy darter distinguish it from the otherwise very similar common darter (Sympetrum striolatum) and vagrant darter (Sympetrum vulgatum), both of which show yellow stripes on their legs. The spotted darter (Sympetrum depressiusculum) with all-black legs has noticeably more clubbed abdomen and brighter pterostigmata.