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Unformatted text preview: March 10 Bio Which of the following can occur in response to the binding of a neurotransmitter to a receptor on a post-synaptic neuron? – hyperpolarization – depolarization – opening of Na+ channels – opening of K+ channels – all of the above Every time a neurotransmitter binds to a receptor on a post-synaptic neuron, it causes an action potential to be fired. – true – false The Nervous System = integrates and coordinates many of the body's activities – organization – central nervous system (CNS) – brain – spinal cord – peripheral nervous system (PNS) The Central Nervous System – the brain and spinal cord – receives and integrates incoming information – coordinates all voluntary and involuntary responses – well-protected – bone, membranes, and fluid protect CNS – bone – skull encases brain – vertebral column encloses spinal cord – protect from physical trauma – meninges – three connective tissue membrane layers – dura mater (outermost, thickest, most durable), arachnoid mater (inside the dura mater, lots of spider-like extensions), pia mater (most internal, pressing directly against the neurons of the brain and spinal cord, thinnest, most fragile) – stabilize and protect = from bruising (hitting the hard bones)...
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This note was uploaded on 04/08/2009 for the course BIO 309D taught by Professor Jessicawandelt during the Spring '08 term at University of Texas.
- Spring '08