Elementary Lessons in Zology a Guide in Studying Animal Life And Structure I
Elementary Lessons in Zology a Guide in Studying Animal Life And Structure I
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Muscles of Body Wall. Make a longitudinal cut close beside the dorsal fins, and down to the spinal column. Extend this incision backward to the caudal fin, and for- ward to the pectoral arch. Remove the great flap of flesh thus partly freed from one side, dissecting it away from the ribs and from the inferior projections of the vertebrae posterior to the ribs. Observe the arrangement of the white bands of muscles, of which it is principally com- posed.
Separate two of the vertebrse, and find th...e spinal cord extending longitudinally through them.
Plan of Structure. Consider well the arrangement of parts as you have found them in the fish. Here i" a new plan of structure. The hard parts (bones) are inside, and the muscles are attached to prominences on their exterior. What general arrangement of skeleton and muscles have you found in the other animals studied?
The central parts of the nervous system are inclosed within a bony canal which extends along the dorsal side of the body. The anterior end of this canal is expanded into the wide cranium; the remainder of this tube is the neural canal, which extends backward through the verte- brse.
What to read after Elementary Lessons in Zology a Guide in Studying Animal Life And Structure I?
You can find similar books in the "Read Also" column, or choose other free books by James George Needham to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Muscles of Body Wall. Make a longitudinal cut close beside the dorsal fins, and down to the spinal column. Extend this incision backward to the caudal fin, and for- ward to the pectoral arch. Remove the great flap of flesh thus partly freed from one side, dissecting it away from the ribs and from the inferior projections of the vertebrae posterior to the ribs. Observe the arrangement of the white bands of muscles, of which it is principally com- posed.
Separate two of the vertebrse, and find th...e spinal cord extending longitudinally through them.
Plan of Structure. Consider well the arrangement of parts as you have found them in the fish. Here i" a new plan of structure. The hard parts (bones) are inside, and the muscles are attached to prominences on their exterior. What general arrangement of skeleton and muscles have you found in the other animals studied?
The central parts of the nervous system are inclosed within a bony canal which extends along the dorsal side of the body. The anterior end of this canal is expanded into the wide cranium; the remainder of this tube is the neural canal, which extends backward through the verte- brse.
What to read after Elementary Lessons in Zology a Guide in Studying Animal Life And Structure I?
You can find similar books in the "Read Also" column, or choose other free books by James George Needham to read onlineMoreLess
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