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Understanding the Human Body Organization and Systems

Explore the intricacies of the human body, from cells to tissues, organs, and body systems. Learn about homeostasis, anatomical positions, directional terms, and body cavities to understand how the body functions.

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Understanding the Human Body Organization and Systems

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  1. Unit 3 The Human Body

  2. Chapter 6 Organization of the Human Body

  3. Life • Homeostasis • Cells • Tissues • Organs • Body systems • Human body

  4. Cells • Cell membrane • Cytoplasm • Organelles

  5. Question • True or False: • Tissues are the smallest living structure in the body.

  6. Answer • False • Cells • Smallest living structures in body • Tissues • Cells with similar function grouped together

  7. Cell Components

  8. Organelles • Nucleus • Mitochondrion • Lysosomes • Ribosomes • Golgi apparatus (continued)

  9. Organelles • Centrioles • Endoplasmic reticulum • Vesicles

  10. Tissues • Epithelial • Connective • Nervous • Muscular

  11. Question • Which of the following types of tissues holds parts of the body in place? • Muscular • Epithelial • Connective

  12. Answer • C. Connective • Connective tissue • Holds parts of body in place • Epithelial tissue • Covers • Muscular tissue • Allows movement

  13. Describing the Body • Anatomical position • Body planes • Directional terms • Body cavities • Abdominal regions

  14. Anatomical Position

  15. Body Planes • Midsagittal plane • Frontal plane • Transverse plane

  16. Sagittal Plane

  17. Frontal and Transverse Plane

  18. Question • Which of the following planes divides the body into front and back portions? • Midsagittal • Frontal • Transverse

  19. Answer • B. Frontal • Frontal plane • Divides body into front and back portions • Midsagittal plane • Divides body into right and left sides • Transverse plane • Divides body into top and bottom portions

  20. Directional Terms • Lateral • Medial • Anterior (ventral) • Posterior (dorsal) • Inferior (continued)

  21. Directional Terms • Superior • Caudal • Cephalic (cranial) • Deep • Superficial (continued)

  22. Directional Terms • Distal • Peripheral • Proximal • Apex • Base

  23. Question • True or False: • The medial side of the foot would be the inside aspect of the foot.

  24. Answer • True • Medial • Toward midline or center of body • Medial aspect of foot would be inside portion • Lateral • Opposite of medial • Away from center of body or toward sides

  25. Body Cavities • Posterior (dorsal) body cavity • Cranial or spinal • Anterior (ventral) body cavity • Thoracic, abdominal, or pelvic • Smaller cavities • Orbital, nasal, or buccal (continued)

  26. Body Cavities

  27. Question • True or False: • The cranial cavity contains the spinal cord.

  28. Answer • False • Spinal cavity • Located within spinal column • Contains spinal cord • Cranial cavity • Located in skull • Contains brain

  29. Abdominal Regions • Epigastric • Right and left hypochondriac • Umbilical • Right and left lumbar • Hypogastric • Right and left iliac

  30. Regions

  31. Question • Which of the following regions is located just below the sternum (breastbone)? • Hypogastric • Hypochondriac • Epigastric

  32. Answer • C. Epigastric • Epigastric region • Located just below stomach • Hypogastric region • Located over pubic area

  33. Answer • C. Epigastric • Hypochondriac regions • Located below ribs on either side of epigastric region

  34. Abdominal Quadrants

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