Tendon- organ Quadriceps (extensors) + Excitatory synapse - Inhibitory synapse Hamstrings (flexors) (3a) Efferent impulses to muscle with stretched tendon are damped. Muscle relaxes, reducing tension. Spinal cord Efferent impulses to antagonist muscle cause it to contract. Interneurons Diagram a crossed extensor reflex arc labeling the afferent sensory fiber, interneurons

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Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.