. On the anatomy of vertebrates [electronic resource] . , fig. 7. § 2. Structural characters. — The series of vertebrae,their several modifications, as the neural or haemal organsmay predominate, constitute the vertebral column. The dneural axis consists of f encephalon or brain, and of myelon or spinal chord. The organs of the five senses— touch, taste, smell, hearing, and sight — are usuallypresent. The blood-discs, fig. 8, speedily acquire the redcolour which, by their number and minuteness, theyimpart to the whole blood. The heart is a compact mus-cular organ, of two or more cavities, prop
. On the anatomy of vertebrates [electronic resource] . , fig. 7. § 2. Structural characters. — The series of vertebrae,their several modifications, as the neural or haemal organsmay predominate, constitute the vertebral column. The dneural axis consists of f encephalon or brain, and of myelon or spinal chord. The organs of the five senses— touch, taste, smell, hearing, and sight — are usuallypresent. The blood-discs, fig. 8, speedily acquire the redcolour which, by their number and minuteness, theyimpart to the whole blood. The heart is a compact mus-cular organ, of two or more cavities, propelling the blood,through a closed system of arteries and veins, directly tothe breathing-organ, and, in most vertebrates, directly also to thebody. The breathing-organ communicates with the pharynx. Thealimentary canal has distinct receptive and expellent apertures,usually at opposite ends of the trunk. The mouth is providedwith two jaws, placed one above or before the other, workingin the direction of the axis of the body. The muscles surround. Germ of a Rabbit (Barry) under
Size: 1469px × 1701px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubject, booksubjectbirds, booksubjectfishes
