Chapter 1

Chapter 1 - Chapter 1 Levels of Organization Atom- the...

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Chapter 1 Levels of Organization Atom- the smallest units of matter Molecules – 2 or more atoms combined Cells – Large molecules joined together in a specific way Tissues –-precise organizations of similar cells that perform specialized functions Organs – two or more tissue types that work together to perform specific, complex functions Organ systems – related organs that work together to coordinate activities and achieve a common function Microscopic/Macroscopic Anatomy – microscopic cannot be observed with the naked eye; macroscopic can be observed with the naked eye Histology – the study of tissues at the microscopic level Cytology – cellular anatomy; the study of single body cells and their internal structures at the microscopic level Directional Terms Anatomical position – a specific body position in which an individual stands upright with the feet parallel and flat on the floor; the head is level and the eyes look forward toward the observer, the arms are at either side of the body with the palms facing forward and the thumbs pointing away from the body Medial – towards the midline Lateral – away from the midline Proximal – close to the point of attachment at the trunk
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This note was uploaded on 10/25/2010 for the course BISC 212Lx taught by Professor Moyer during the Fall '07 term at USC.

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Chapter 1 - Chapter 1 Levels of Organization Atom- the...

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