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Breathing is controlled by the autonomic nervous system

Substances (i.e., nutrients, gases, solutes) naturally want to move or flow from high concentrations to low concentrations

Compounds are two or more different elements bound together

Relative to the nervous system, endocrine signaling is more direct/specific

Relative to the nervous system, endocrine signaling is slow

Down regulation in the endocrine system is when target cells inhibit hormone action by decreasing the number of active receptors in response to increased hormone levels

The three general types of neural cells include sensory neurons, interneurons, and motor neurons

Exocytosis refers to the process of exporting material from the cell using membrane bound vesicles

Atoms are the smallest units of matter and are composed of protons, neutrons, and electrons

Specialized proteins embedded in the plasma membrane help move substances in and out of our cells