Unformatted text preview: • anchoring neurons
• provide nutrients for neurons
• remove dead cells
• form myelin sheath
• 10x more abundant than neurons • Intercalated disks
- faster communication Figure 40.5 (Campbell 9th ed) Function:
• Sense stimuli
• Transmit signals btwn body parts
• Process signals
Figure 40.5 (Campbell 9 Dendrites th ed) 35 Coordination and Control 36 Organs • In most animals, tissues organized into organs
• Tissues may be:
• intermingled or
• arranged in distinct layers • Nervous system
– Transmit signals
btwn specific locations
– Better for rapid response Lumen of
stomach – Locomotion and behavior • Endocrine system
– Transmit molecules
via the blood stream
– Better for gradual changes
that affect the entire body Mucosa:
connective tissue • Growth, development,
reproduction, digestion etc. Muscularis:
and epithelial tissues Figure 40.6 (Campbell 9th ed) 37 Organ Systems 38 We will discuss many of these in subsequent lectures Animal Function
Two Basic Questions (1) How do organisms use energy?
(2) How do organisms cope with changing environment? Table 40.1 Campbell et al. 9th ed 40 (1) How do organisms use energy?
Metabolic rate - amount of energy used per unit time Measured by amount of O2
consumed or CO2 or heat
produced 41 (1) How do organisms use energy?
Metabolic rate - amount of energy used per unit time Or by calories consumed and energy lost in feces and urine. 44 45 (1) How do organisms use energy? Energ...
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