BIOL 10212: Human Anatomy and Physiology II

Explore the concept of semiconservative DNA replication, where each new DNA molecule retains one original strand. Understand the significance of this mechanism in ensuring accurate genetic information transfer across cell generations.

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 relationship between monomers and polymers, focusing on nucleic acids and their building blocks. This video clarifies the distinctions between various biological molecules and their basic units, emphasizing the critical role of nucleotides in nucleic acids.

Discover the mechanics of voltage-gated Na+ channels and their role in neuron activity. This video breaks down key neuronal terms like resting potential and threshold to explain precisely when these channels open. You'll come away understanding that voltage-gated Na+ channels open at the threshold state initiating an action potential.

Explore the effects of isotonic, hypertonic, and hypotonic solutions on plant and animal cells. Understand water movement, solute concentration dynamics, and the resulting cellular changes, including turgidity in plants and crenation or lysis in animals.

Unlock the basics of the anatomical position, a crucial standard in medical and anatomical studies. This video clarifies the key differences among prone, supine, and standing positions and why they're not the anatomical position.