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Yvette L. Martinez

PHYSIOLOGY WEEK 1-6

QuestionAnswer
What is the definition of homeostasis? Homeostasis is the ability of the body to maintain a stable and constant internal environment despite changes in external or internal conditions
How does negative feedback loop work? By detecting a change in a variable (stimulus) and initiating responses that reverse that change, returning the system to its set point
How does positive feedback work? It amplifies the original stimulus, pushing the variable further away from its set point. It accelerates a process to completion
What are the four major groups of organic substances in the body? Carbohydrates, Lipids, Proteins, and Nucleic Acids
What are the three main types of carbohydrates, and what is an example of each? 1. Monosaccharides (Glucose, Fructose) 2. Disaccharides (Sucrose, Lactose) 3. Polysaccharides (Starch, Glycogen)
How does the sugar component differ between DNA and RNA? DNA uses the sugar deoxyribose, while RNA uses the sugar ribose
What is the main difference between passive and active transport? Passive transport requires no energy. Active transport requires cellular energy (ATP)
How does an enzyme's shape relate to its function? Its unique shape determines which specific molecule (substrate) it can bind to and react with
What are the four major types of tissue in the body? Epithelial, Connective, Muscle, and Nervous
What is fibrosis? The replacement of damaged tissue with scar tissue (collagen fibers), which does not perform the original function
What is the primary function of bone marrow? To produce blood cells (red and white) and platelets
What are three structural classifications of joints? Fibrous, Cartilaginous, and Synovial
Besides movement, what is another key function of skeletal muscle? Generating heat to maintain body temperature (thermogenesis)
What is the light, porous tissue found inside bones? Spongy Bone (or Cancellous Bone)
Created by: user-1988579
 

 



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