BIOL 2404: Human Anatomy and Physiology I

Learn why lipid-soluble signaling molecules like aldosterone only impact specific target cells. We discuss four theories and reveal that intracellular receptors present only in target cells are the key. This video demystifies the unique mechanism behind aldosterone's selective action.

Discover the intricate world of phylogenetic systematics, a method revealing life's diverse connections. Dive into the tree-like structure representing evolutionary relationships. Unravel how shared traits help sketch the ever-evolving story of life

Explore the definitions of tissue, organ, and organ system. Understand the distinctions and interconnectedness between these components. Get an overview of the human body's eleven major organ systems and their functions.

Unlock the world of pathogens, the microorganisms causing diseases. Grasp how they invade, colonize, and adversely affect host organisms. Learn about prevention strategies to mitigate their harmful impacts.

Primary succession is the process of converting barren, lifeless rock into a flourishing terrestrial community. This ecological transformation begins with pioneering species and lays the foundation for complex ecosystems.

Explore the foundational processes of aerobic and anaerobic respiration. Uncover the key roles of glycolysis, the citric acid cycle, and oxidative phosphorylation. Differentiate between the efficiencies and electron acceptors of both respiration types.