PreparED Study Materials
BIOL 6990: Dissertation Research
School: Saint Louis University
Number of Notes and Study Guides Available: 0
Videos
Mollusk Mantles: Secrets of Shell and Organ Protection
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the essential role of the mantle in mollusks, the protective tissue responsible for shell secretion or organ protection. Explore how land snails, clams, and octopuses utilize their mantles for distinct purposes.
Decoding Muscle Cells: The Crucial Role of Sarcomeres Explained
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the precise organization of thin and thick filaments in muscle cells as we debunk misconceptions and highlight the vital role of sarcomeres in muscle contraction.
Lysosomes in Focus: Identifying the Ideal Cell Type for Study
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Get insights into the role of lysosomes in different cell types. Find out which cell is the ideal choice for studying these powerful digestive organelles and why.
Immune Overreactions: Understanding Hypersensitivity Types & Impact
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the intricate workings of the immune system's overactive responses, known as hypersensitivity reactions. Learn about the classification into Types I, II, III, and briefly, IV, along with real-world examples. Uncover the mechanisms behind these reactions and their impact on our health.
Meal to Digestion: Grasping Distension & Body's Control Center
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover what happens in your body after a hearty meal! Learn about the concept of 'distension' and how nerve cells act as messengers to your control center, orchestrating the digestive process.
Langerhans Cells: Stratum Spinosum, Corneum, Granulosum, or Basale?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the role and location of Langerhans cells key components of the human immune system found in the skin. Learn about the different layers of the skin and where these cells predominantly reside. By the end of the video you'll know that Langerhans cells are mainly found in the Stratum Spinosum layer

















