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Diagrammatic longitudinal section of the body. Labels: a, the neural tube, with its upper enlargement in the skull cavity at a'; N, the spinal cord; N', the brain; ee, vertebrae forming the solid partition between the dorsal and ventral cavities; b, the pleural, and c, the abdominal division of the ventral cavity, separated from one another by the diaphragm, d; i, the nasal, and o, the mouth chamber, opening behind into the pharynx, from which one tube leads to the lungs, l, and another to the stomach, f; h, the heart; k, a kidney; s, the sympathetic nervous chain. From the stomach, f, the intestinal tube leads through the abdominal cavity to the posterior opening of the alimentary canal.

Longitudinal Section of Body

Diagrammatic longitudinal section of the body. Labels: a, the neural tube, with its upper enlargement…

Diagrammatic longitudinal section of the Body. Labels: a, the neural tube, with its upper enlargement in the skull cavity at a'; N, the spinal cord; N', the brain; ee, vertebrae forming the solid partition between the dorsal and ventral cavities; b, the pleural, and c, the abdominal division of the ventral cavity, separated from one another by the diaphragm, d; i, the nasal, and o, the mouth chamber, opening behind into the pharynx, from which one tube leads to the lungs, l, and the heart; k, a kidney; s, the sympathetic nervous chain. From the stomach, f, the intestinal tube leads through the abdominal cavity to the posterior opening of the alimentary canal.

Longitudinal Section of the Body

Diagrammatic longitudinal section of the Body. Labels: a, the neural tube, with its upper enlargement…

Diagrammatic longitudinal section of the trunk and head. Labels: 1,1, the dorsal cavity; a, the spinal portion; b, the cranial enlargement; c, c, the bodies of the vertebrae forming the partition between the dorsal and ventral cavities; 2, 2, the ventral cavity, subdivided into thoracic cavity (d), abdominal cavity (e), and pelvic cavity (f); g, the nasal cavity; h, the mouth, or buccal cavity. The alimentary canal (al) is represented running through the whole length of the ventral cavity.

Trunk and Head of Human Body

Diagrammatic longitudinal section of the trunk and head. Labels: 1,1, the dorsal cavity; a, the spinal…

Diagram of the Body opened from the front to show the contents of the ventral cavity. Labels: d, diaphragm; h, heart; lu, lungs; st, stomach; li, liver; si, small intestines; c, large intestine

Ventral Cavity of the Body

Diagram of the Body opened from the front to show the contents of the ventral cavity. Labels: d, diaphragm;…