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The obturator artery is a branch of the internal iliac artery that passes antero-inferiorly (forwards and downwards) on the lateral wall of the pelvis, to the upper part of the obturator foramen, and, escaping from the pelvic cavity through the obturator canal, it divides into an anterior branch and a posterior branch.
This change occurs in order to match up the tissue's oxygen demand with the actual oxygen supply available in the blood as closely as possible. [1] For example, if a muscle is being utilized actively, it will require more oxygen than it was at rest, so the blood vessels supplying that muscle will vasodilate, or widen in size, to increase the ...
The obturator vein begins in the upper portion of the adductor region of the thigh and enters the pelvis through the upper part of the obturator foramen, in the obturator canal. It runs backward and upward on the lateral wall of the pelvis below the obturator artery , and then passes between the ureter and the internal iliac artery , to end in ...
Oxygen (bound to hemoglobin in red blood cells) is the most critical nutrient carried by the blood. In all arteries apart from the pulmonary artery, hemoglobin is highly saturated (95–100%) with oxygen. In all veins, apart from the pulmonary vein, the saturation of hemoglobin is about 75%.
Nutrients that are commonly used by animal and plant cells in respiration include sugar, amino acids and fatty acids, and the most common oxidizing agent is molecular oxygen (O 2). The chemical energy stored in ATP (the bond of its third phosphate group to the rest of the molecule can be broken allowing more stable products to form, thereby ...
Hypoxia can be due to external causes, when the breathing gas is hypoxic, or internal causes, such as reduced effectiveness of gas transfer in the lungs, reduced capacity of the blood to carry oxygen, compromised general or local perfusion, or inability of the affected tissues to extract oxygen from, or metabolically process, an adequate supply ...
The higher supply of oxygen allows the teleost retina to be thick and have few blood vessels thereby increasing its sensitivity to light. [10] In addition to raising the P O 2 {\displaystyle {P_{\rm {O_{2}}}}} , the choroid rete has evolved to raise the temperature of the eye in some teleosts and sharks .
Obturator canal; Obturator vessels (disambiguation) Obturator artery; Obturator veins; Obturator nerve. Anterior branch of obturator nerve; Posterior branch of obturator nerve; Cutaneous branch of the obturator nerve; Obturator internus nerve; Accessory obturator nerve; Obturator membrane; Obturator crest; Obturator muscles (disambiguation ...