Coordination and Response (Chapter 10)
Study Guide: Biology - Coordination and Response (Chapter 10) Syllabus Coverage: Comprehensive overview of physiological control mechanisms, integrating nervous and hormonal principles. Format Goal: Quick-reference summary; distill concepts for rapid tutor/student review. Syllabus Note: Covers core topics. Topics marked (E) denote detailed focus typically reserved for Extended grades (e.g., full endocrine pathway analysis). Overview: Coordination Principles Coordination ensures organism survival. Requires communication systems to detect stimulus and initiate response. Detection: Stimulus received by Receptors. Processing: Signal processed in the Central Nervous System (CNS) or Endocrine system. Response: Action initiated by Effectors. System 1: Nervous Coordination (Fast Response) Mechanism: Electrical impulse transmission via neurons. Very rapid response time. Pathway (Reflex Arc): Receptor $\rightarrow$ Sensory Neuron $\rightarrow$ CNS $\rightarrow$ Motor Neuron $\rightarrow$ Effector. ...