# Control and coordination

**In this chapter, you will learn to:**

* Describe key features of the endocrine system, focusing on the hormones insulin, glucagon, and ADH.
* Compare how mammals use the endocrine and nervous systems to coordinate responses to internal and external stimuli.
* Explain the structure and function of sensory and motor neurons and outline their roles.
* State the function of intermediate neurons.
* Summarize the role of sensory receptor cells, using a chemoreceptor in a human taste bud as an example.
* Describe and explain how nerve impulses are transmitted.
* Describe the structure and function of cholinergic synapses and explain how they work.
* Describe the ultrastructure of striated muscle and explain how muscle contraction occurs in response to motor neuron impulses.

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