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BASIC BODY PLAN

BASIC BODY PLAN. From a two-layered sheet to a segmented tube within a tube. Sagittal view of “generic” vertebrate embryo/body plan Draw gut tube within “outer” tube Mouth, anus Cut across middle to see cross (or transverse) section. Outer(“somatic”) tube --striated muscle

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BASIC BODY PLAN

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  1. BASIC BODY PLAN From a two-layered sheet to a segmented tube within a tube Human Anatomy, Larry M. Frolich, Ph.D.

  2. Sagittal view of “generic” vertebrate embryo/body plan • Draw gut tube within “outer” tube • Mouth, anus • Cut across middle to see cross (or transverse) section Human Anatomy, Larry M. Frolich, Ph.D.

  3. Outer(“somatic”) tube • --striated muscle • --somatic motor nerves • Inner (“visceral”) tube • --smooth muscle • --visceral motor nerves • Celom or Body Cavity • --empty space between tubes Human Anatomy, Larry M. Frolich, Ph.D.

  4. Celom and diaphragm in sagittal section view Human Anatomy, Larry M. Frolich, Ph.D.

  5. THE INNER TUBE • Gut • Serous lining • (peritoneum) • Mesenteries • Celom/Body Cavity/ • Peritoneal Cavity Human Anatomy, Larry M. Frolich, Ph.D.

  6. THE OUTER TUBE • Neural tube—brain, spinal cord • (Dorsal Hollow Nerve Tube) • Notocord • Vertebra • Muscle, Nerve, Skin, Bone • LIMBS!! • SEROUS MEMBRANES • Peritoneum • --visceral • --parietal/somatic • Pleura • --visceral • --parietal/somatic • Mesentery Human Anatomy, Larry M. Frolich, Ph.D.

  7. SEGMENTATION • Brain and spinal cord • Notocord • Vertebrae and Ribs • Segmented Spinal Nerves • Sensory Areas (dermatomes) • Muscle Segments (myotomes) Human Anatomy, Larry M. Frolich, Ph.D.

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