BIOL 1117- Midterm Exam Guide - Comprehensive Notes for the exam ( 95 pages long!)

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Autonomic nervous system (anatomy of ans, autonomic effects on target organs) Adrenal glands: paired adrenal glands on superior poles of the kidneys each is two glands with different functions. Parasympathetic division: parasympathetic arises from the brain and sacral regions of the spinal cord, somas of long preganglionic neurons. This nerve carries about 90% of all parasympathetic preganglionic fibers it travels down the neck and forms three networks in the mediastinum of the chest: to heart lungs esophagus a 4th network (abdominal organs) Enteric nervous system enteric nervous system: the nervous system of the digestive tract. Signal transduction pathway: signal transduction pathway is the sequence of events between receptor activation and cellular responses, 1. Acetylcholine (ach: ach is secreted by all preganglionic neurons in both divisions and the postganglionic parasympathetic neurons. Any receptor that binds ach is called cholinergic receptor: two types of cholinergic receptors.

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