Elementary anatomy and physiology : for colleges, academies, and other schools . elementaryanato00hitc Year: 1869 mil * 3 2 3 2 3 2 3 23 2 3 7 z, ? a & a 6a b a b a b a b a b a Diagram of the Principal Varieties of the Aorta in its Principal Branches in a, Man ; b, Elephant c, Cetacea ; d, Bat; e, Carnivora; r. Seal; g, Ruminants; ii, Reptiles. 1, Right Subclavian. 2, Right Carotid. 3, Left Carotid. 4, Left Subclavian. 5, Verte- bral, a, Ascending and b Descending Aorta. nary Veins varies upon the different sides of the body, and is generally according to the number of lobes in the lungs, the
Elementary anatomy and physiology : for colleges, academies, and other schools . elementaryanato00hitc Year: 1869 mil * 3 2 3 2 3 2 3 23 2 3 7 z, ? a & a 6a b a b a b a b a b a Diagram of the Principal Varieties of the Aorta in its Principal Branches in a, Man ; b, Elephant c, Cetacea ; d, Bat; e, Carnivora; r. Seal; g, Ruminants; ii, Reptiles. 1, Right Subclavian. 2, Right Carotid. 3, Left Carotid. 4, Left Subclavian. 5, Verte- bral, a, Ascending and b Descending Aorta. nary Veins varies upon the different sides of the body, and is generally according to the number of lobes in the lungs, the relations of the sides being represented by the formula 3 + 2. 411. Economy of Diving Animals—In diving animals the vena cava is capable of great dilatation, in order to contain an unusual quantity of blood which accumulates there when the animal suspends respiration under water, since it can not be purified except in the lungs. Still further protection to the heart in diving animals is seen in the vena cava ascendens, where a circular muscle, by its contraction, can completely cut off the flow of blood to the heart Fig. 229. from the lower extremities. ^ 412. Blood Corpuscles of f* ah®3 Mammals—Wonder Nets.— ^® The blood of mammals, for the most part, presents small round, disc-shaped corpuscles, similar to, but smaller than those in man. This is especially * A Red Corpuscles of the Ox. A, In their Natural State, a, Seen in Profile. b> Seen on the Surface. B, Altered Corpuscles. 410. What is peculiar about the aorta and pulmonary veins in many mammals? 411. What is the arrangement of the vena in diving animals?
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