PBIO 119: PBIO 1030

Explore the groundbreaking heterotroph hypothesis by Alexander Oparin. This video outlines how the first organisms likely consumed pre-existing organic matter reshaping how we think about the origins of life and evolution

Get acquainted with the intricate details of the vertebrae, from typical structure components to the unique traits of cervical, thoracic, and lumbar vertebrae. Enhance your grasp of the spinal column's sophistication and importance in human anatomy.

Unpack the process of biological magnification in the food chain and learn why consuming foods from lower trophic levels minimizes toxin exposure. Grasp the implications of human-induced pollutants and the benefits of dietary diversity.

Explore the intricacies of muscle contraction and the pivotal role played by elements like Calcium, Sodium, Potassium, and Chloride. Learn how Calcium directly triggers contraction by interacting with troponin and actin filaments. A thorough breakdown of each element's unique contribution to our body's movement.

Discover the body's innate ability to adapt to extreme cold conditions. Learn how the brain orchestrates warming responses like shivering. Grasp the concept of homeostasis in maintaining internal stability.

Grasp the fundamentals of how neurons transmit electrical signals through action potentials. Understand the crucial role of myelination and fiber diameter in efficient nerve impulse conduction. Dive into the comparisons of different nerve fiber types and their properties.