BIO 2430: Human Physiology and Anatomy

Learn about the composition of arteries focusing on those closer to the heart. Understand the role of endothelium smooth muscle fibers elastic fibers and collagen in these arterial structures. Discover why arteries near the heart have a higher percentage of elastic fibers to withstand pressure changes effectively.

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.

Explore the world of DNA replication by comparing it to climbing a staircase. Understand the roles of leading and lagging strands, and discover the importance of DNA Polymerase III in this intricate process.

Discover the relationship between the papillary layer of the dermis and the layers of the epidermis. Understand the structure, function, and connections that exist in our skin's anatomy.

Discover the intricacies of lymphocytes, vital immune system cells, as we uncover where they develop the ability to effectively combat foreign invaders and the unique roles of T and B lymphocytes and NK cells.