PracticeMidterm2Questionskey_003 - Practice Midterm #2...

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Practice Midterm #2 Questions BILD 2 8/21/08 1) Action potentials originate at the ___ axon hillock __ , travel down axons, and terminate at ___ a synaptic terminal ___. 2) _ Glia _ cells support and nourish neurons. 3) The so called “fight or flight” response is triggered by activation of the __ sympathetic __ division of the autonomic nervous system, and this leads to _ increased heart rate, etc .__ (one specific physiological response). When we need to “rest and digest”, the __ parasympathetic _ division of the autonomic nervous system is activated. 4) The olfactory receptors that bind to specific odorant molecules belong to a specific class of transmembrane protein receptors called _ G-protein coupled receptors __. They are named this because they communicate directly with intracellular signal transduction proteins called _ G proteins _. 5) When a woman becomes pregnant, at least two major events that normally occur monthly in her reproductive cycle need to be halted. What are these events? What set of signal(s) ensure that these events are halted? She needs to not shed the endometrium (menstruate), and she needs to stop ovulating. The hormone hCG, secreted by the embryo, acts like LH to prevent degeneration of the corpus luteum. The corpus luteum will thus continue to secrete estrogens and progesterone. These steroid hormones will then act
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This note was uploaded on 08/28/2009 for the course BIO 10 taught by Professor Towb during the Fall '08 term at CSU Northridge.

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PracticeMidterm2Questionskey_003 - Practice Midterm #2...

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