Examlex
Which structure sends nerve impulses to the sympathetic division of the nervous system during fear or anger to increase the heart rate and respiratory rate as part of the "fight or flight" response to danger?
Annelids
A phylum of invertebrate worms characterized by segmented bodies and includes earthworms, ragworms, and leeches.
Closed Circulatory System
A cardiovascular system in which the blood is contained within blood vessels and circulates entirely within the body, separate from the body’s interstitial fluid.
Fluid-Filled Coelom
A body cavity entirely lined by tissue derived from mesoderm, filled with fluid that allows internal organs to move freely.
Segmented Body
A body divided into repeated sections or segments, characteristic of certain animals like worms and arthropods.
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