Rete mirabile
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A rete mirabile is a complex of arteries and veins lying very close to each other, found in some vertebrates, mainly warm-blooded ones. The rete mirabile utilizes countercurrent blood flow within the
Rete mirabile of a sheep
Opah
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The opah, also commonly known as moonfish, sunfish, cowfish, kingfish, and redfin ocean pan are large, colorful, deep-bodied pelagic lampriform fishes comprising the genus Lampris, of the small family
Rete mirabile
…temperature leads to an increase in basal metabolic temperature. The fish is now able to split ATP at a higher rate and ultimately can swim faster. The opah utilizes retia mirabilia to conserve heat, making it the newest addition to the list of regionally endothermic fish. Blood traveling through capillaries…
Moonfish 600
Ventral view of an opah
X-ray
Lampris guttatus