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Chapter 5 Academic Knowledge: Medical Terminology and Body Organization
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they contain different amounts and kinds of organelles depending on the
cell’s purpose. The anatomy or structure of a cell is closely related to its
physiology, or function.
The cell’s organelles can be seen as the furnishings and equipment
in a factory (Figure 5.8). Every factory room needs walls for structure
and protection from the environment outside, but also windows and
doors to allow some things in and out. Similarly, the cell membrane
is a semipermeable (sehm-ee-PER-mee-uh-buhl) [semi = half] outer
covering with holes, or pores, that act as its doors and windows. Some
Atom
Molecule
Organelle
Cell
Tissue
Organ
Body system
Organism
Figure 5.7 The organizational hierarchy of the body, from atom to organism, is shown here. What are some
examples of organelles, organs, and body systems?