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Chapter 1

BIOB34H3 Chapter Notes - Chapter 1: Perineum, Peritoneum, Thoracic Cavity

Biological Sciences
Course Code
Ted Petit

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Chapter 1 The Human Body: An Orientation
- Anatomy: the study of body structure and relationships among structures
- Physiology: the study of body function
Levels of Organization
- Chemical level
1. atoms and molecules
- Cells
1. the basic unit of all living things
- Tissues
1. cells join together to perform a particular function
- Organs
1. tissues join together to perform a particular function
- Organ system
1. organs join together to perform a particular function
- Organismal
1. the whole body
Organ Systems
Anatomical Position
Regional Names
- Axial region
1. head
2. neck
3. trunk
a. thorax
b. abdomen
c. pelvis
d. perineum
- Appendicular region
1. limbs
Directional Terms
- Superior (above) vs. Inferior (below)
- Anterior (toward the front) vs. Posterior (toward the back)(Dorsal vs. Ventral)
- Medial (toward the midline) vs. Lateral (away from the midline)
- Intermediate (between a more medial and a more lateral structure)
- Proximal (closer to the point of origin) vs. Distal (farther from the point of origin)
- Superficial (toward the surface) vs. Deep (away from the surface)
Planes and Sections divide the body or organ
- Frontal or coronal
1. divides into anterior/posterior
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