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Unformatted text preview: Coordination of Body Functions Respond to
Stimuli Hormones A key characteristic of Life Respond to Stimuli Respond to Stimuli: Nervous System
Nervous S ystem Integration
Nerves sensor effector sensor stimulus response stimulus Cellular Communication
by direct cell-cell contact Respond to Stimuli: Endocrine System effector = specific
response or g land effector (a) Communicating cell junctions. Nervous
System Plasma membranes response
response Heyer a bl d
oo st re am Gap junctions
between animal cells response effector = various
the body Plasmodesmata
between plant cells (b) Cell-cell recognition. Figure 11.3 1 Coordination of Body Functions Cellular Communication — Cellular Communication
via chemical messengers
1. Release: initiator cell secretes ( exocytosis) a chemical
messenger (signal molecules).
Reception: messenger molecules bind to receptors (binding
proteins) on target cells.
Transduction: binding of signal molec...
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This note was uploaded on 09/02/2011 for the course BIOL 6a taught by Professor Staff during the Fall '10 term at DeAnza College.
- Fall '10