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Shayla Nguyen

Physiology Weeks 1-6

QuestionAnswer
Homeostasis The maintenance of a stable internal environment despite external changes.
What are the four main tissue types in the human body? Epithelial, connective, muscle, and nervous tissue.
What is the main function of the plasma membrane? To regulate the movement of substances in and out of the cell
Diffusion The passive movement of molecules from an area of high concentration to low concentration.
What are the three types of muscle tissue? To produce ATP through cellular respiration.
What are the main parts of a neuron? Cell body (soma), dendrites, and axon.
What is the role of the sarcomere in muscle contraction? It’s the functional unit of muscle fibers that shortens during contraction.
What is the difference between the central and peripheral nervous systems? The CNS includes the brain and spinal cord; the PNS includes all other nerves.
What is negative feedback? A mechanism that reverses a change to maintain homeostasis (e.g., body temperature regulation).
What is the primary function of enzymes in the human body? Enzymes speed up chemical reactions by lowering the activation energy needed for the reaction to occur.
Created by: shaylaxnguyen
 

 



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