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Principles of Integrative Human Physiology Study Guide

This guide covers the fundamental principles of integrative human physiology, including homeostasis, feedback mechanisms, and the coordination of bodily functions. It explores how the body maintains a stable internal environment despite external changes and discusses the roles of the nervous and endocrine systems in regulating physiological processes. Key concepts include negative and positive feedback, autonomic and somatic motor control, and the integration of physiological responses to stress

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Basic Principles of Human Physiology

Basic Principles of Human Physiology

Physiology is the study of how the human body works through the integration of functions across levels of organization and organ systems.

  • Levels of organization
  • Integration of functions
  • Organ system communication
  • Structure and function relationship
  • Energy requirements
  • Information flow
  • Homeostasis
  • Internal stability

Principles of Physiology, Metabolism, and Homeostasis

Principles of Physiology and Energy Metabolism

Living organisms require energy for transport, mechanical, chemical, and thermal work through metabolic processes and thermodynamics.

  • Structure and function relationship
  • Molecular interactions
  • Compartmentalization
  • First law of thermodynamics
  • Second law of thermodynamics
  • Homeostasis
  • Metabolism
  • ATP energy transfer
  • Catabolism
  • Anabolism
  • Organ-system integration

Principles of Homeostasis and Mass Balance

The body maintains a dynamic steady state through homeostasis, regulating internal environments like extracellular fluid and intracellular fluid using information flow and mass balance.

  • Homeostasis
  • Information flow
  • Chemical signals
  • Electrical signals
  • Mechanical signals
  • Metabolic signals
  • Pathophysiology
  • Extracellular fluid (ECF)
  • Intracellular fluid (ICF)
  • Mass balance
  • Dynamic steady state
  • Steady-state disequilibrium

Control Systems and Homeostasis Principles

Regulated variables are kept within a normal range near a setpoint through local and reflex control mechanisms.

  • Homeostasis
  • Control systems
  • Local control
  • Reflex control
  • Negative feedback loops
  • Positive feedback loops
  • Feedforward control
  • Response loops
  • Setpoint
  • Stimulus
  • Sensor
  • Integrating center
  • Output signal
  • Target
  • Response

Autonomic and Somatic Motor Control

Physiological Responses to Exercise Stress

This content examines how metabolism, cardiovascular, respiratory, and thermoregulatory systems respond to maintain homeostasis during physical activity.

  • Metabolism and ATP production
  • Phosphocreatine
  • Anaerobic glycolysis
  • Aerobic metabolism
  • Energy substrate use
  • Hormonal regulation of metabolism
  • Oxygen consumption
  • Oxygen deficit
  • Excess post-exercise oxygen consumption
  • Ventilatory responses
  • Feedforward responses
  • Cardiac output
  • Stroke volume
  • Blood flow distribution
  • Peripheral resistance
  • Baroreceptor reflex
  • Temperature regulation
  • Evaporative cooling
  • Glucose tolerance
  • Insulin secretion

Body Compartmentalization and Integrative Physiology Principles

Cells, Tissues, and Body Compartmentalization

The body is compartmentalized into functional compartments, fluid-filled compartments, and anatomical cavities separated by membranes.

  • Body compartmentalization
  • Functional compartments
  • Anatomical body cavities
  • Biological membranes
  • Fluid mosaic model
  • Phospholipid structures
  • Intracellular compartments
  • Membranous organelles
  • Mitochondria
  • Endoplasmic reticulum
  • Golgi apparatus
  • Lysosomes
  • Peroxisomes
  • Nucleus

Human Body Fluid Compartments and Microcirculation

Total body water is divided into intracellular and extracellular fluid compartments, including plasma and interstitial fluid, maintained through chemical disequilibrium and capillary microcirculation.

  • Total body water
  • Intracellular fluid
  • Extracellular fluid
  • Plasma
  • Interstitial fluid
  • Capillary microcirculation
  • Hydrostatic pressure
  • Osmotic pressure
  • Chemical disequilibrium
  • Solute distribution
  • Serum and plasma separation

Principles of Integrative Human Physiology

This content explores how organs act as integrated networks to maintain regulated variables through sensory detection, control center integration, and effector responses.

  • Integrative physiology
  • Homeostatic mechanisms
  • Biological feedback loops
  • Baroreflex
  • Arterial blood pressure
  • Cerebral perfusion
  • Plasma osmolarity
  • Thermoregulation
  • Nutrient homeostasis
  • Physiological reserve
  • Systemic compensation
  • Physiological trade-offs

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