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Human Anatomy

Human Anatomy. Anatomical Terms. Definitions. Anatomy – Deals with the structure of body parts – their forms and relationships . Physiology – Deals with the functions of body parts – what they do and how they do it.

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Human Anatomy

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  1. Human Anatomy Anatomical Terms

  2. Definitions • Anatomy – Deals with the structure of body parts – their forms and relationships. • Physiology – Deals with the functions of body parts – what they do and how they do it. • Dissection – The careful cutting apart of body parts to see their relationships.

  3. Anatomical Terminology • Body Positions • Regional Names • Directional Terms • Planes and Sections • Body Cavities

  4. Body Positions • Anatomical Position • The subject stands erect facing the observer, with the head level and the eyes facing forward. The feet are flat on the floor and directed forward, and the arms are at the sides with the palms turned forward. • Prone – body lying face down. • Supine – body lying face up.

  5. Anatomical Position

  6. Regional Names • Regions can be identified externally. • Principal regions: • Head (cephalic) • Neck (cervical) • Trunk • Upper limb • Lower limb

  7. Directional Terms • Superior (cephalic or cranial) and inferior (caudal). • Anterior (ventral) and posterior (dorsal). • Medial and lateral.

  8. Directional Terms • Intermediate • Ipsilateral and contralateral. • Proximal and distal. • Superficial and deep.

  9. Directional Terms

  10. Planes and Sections • Sagittal Plane – vertical plane – divides body into right and left. • Midsaggital or median plane – equal parts • Parasaggital plane – unequal parts

  11. Planes and Sections • Frontal or coronal – divides body into anterior and posterior parts • Transverse plane – divides body into superior and inferior parts • Oblique plane – angle • Section – one flat surface or a 3-D structure

  12. Planes

  13. Planes

  14. Body Cavities • Spaces within the body that help protect, separate, and support internal organs. • Two major cavities are the dorsal and ventral body cavities.

  15. Dorsal Body Cavity • Located near the dorsal (posterior) surface of the body. • Subdividions • Cranial cavity • Vertebral (spinal) canal • Meninges

  16. Ventral Body Cavity • Located near the ventral (anterior) aspect of the body. • Subdivisions • Thoracic cavity • Abdominopelvic cavity • Diaphragm • Viscera

  17. Dorsal and Ventral Cavities

  18. Thoracic Cavity • Subdivisions • Pericardial Cavity • Pleural cavities • mediastinum

  19. Abdominopelvic cavity • Subdivisions • Abdominal Cavity • Pelvic Cavity

  20. Thoracic and Abdominal Cavity Membranes • Serous membrane • Pleura • Pericardium • Peritoneum

  21. Abdominopelvic Regions and Quadrants • The nine-region designation is used for anatomical studies, whereas the quadrant designation is used to locate the site of pain, tumor, or some other abnormality.

  22. Abdominopelvic Regions • Right Hypochondriac Region • Epigastric Region • Left Hypochondriac Region • Right Lumbar Region • Umbilical Region • Left Lumbar Region • Right Inguinal (Iliac) Region • Hypogastric (Pubic Region) • Left Inguinal (Iliac) Region • Subcostal line, transtubercular line, midclavicular lines

  23. Abdominopelvic Quadrants • Right Upper Quadrant (RUQ) • Left Upper Quadrant (LUQ) • Right Lower Quadrant (RLQ) • Left Lower Quadrant (LLQ) • Horizontal lines passes through umbilicus

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