Term
| What does the Hypothalamus control? |
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Definition
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Term
| What does the brain stem (Pons/Medulla) control? |
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Definition
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Term
| What is the unofficial 3rd division of the ANS? |
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Definition
Enteric nervous system: "little brain" of GI tract |
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Term
| What are things under only parasympathetic control? |
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Definition
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Term
| What are things under only sympathetic control? |
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Definition
vascular smooth muscle skin sweat glands liver adipose kdney
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Term
| Can the parssympathetic NS be overidden? |
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Definition
Yes During times of stress the Sympathetic NS can overide it's affects on the heart and digestive/urinary systems. |
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Term
| What is the NT that all preganglionic neurons release? |
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Definition
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Term
| What are the receptors on ALL postganglionic neurons? |
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Definition
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Term
| In the Sympathetic NS what is usually the NT released at the post ganglionic neuron? What are the receptors on the effector organ? |
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Definition
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Term
| In the Sympathetic NS what is the exception to the rule about postganglionic NT and effector receptors? |
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Definition
Sweat glands, Vacular smooth muscle in skeletal muscle. (Vasodilator fiber)(ACh, Muscarinic receptors) Renal vascular smooth muscle (Dopamine)
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Term
| In the Parasympathetic NS what NT is always used by the postganglionic neuron? What is the effector organ receptor? |
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Definition
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Term
How does the Adrenal Madulla behave in the nervous system? |
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Definition
As a modified postganglionic fiber Has a Nicotinic receptor that responds to ACh Releases Epinepherine (80%) and Norepinepherine (20%) in to circulation Cell bodies of preganglionic neurons in thoracic spinal cord Axons synapse on Chromaffin cells.
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Term
| What determines the physiological event elicited by a neurotransmitter? |
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Definition
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Term
| Nicotinic Receptors. Response to ACh? Locations? |
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Definition
Named because nicotine binds to it and causes similiar responses as ACh |
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Term
| Muscarinic Receptors. Response to ACh? Locations? |
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Definition
Named because muscarin binds to it and causes similiar affect as ACh. ACh can be either inhibitory or excitatory ALL effectors of Parasympathetic NS sweat glands and vascular smooth muscle of skeletal musch of Sympathetic NS
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Term
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Definition
derived from Tyrosine Epi. NE, and Dopamine
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Term
| What receptor does NE stimulate better? |
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Definition
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Term
| What receptor does Epi stimulate better? |
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Definition
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Term
| Physical characteristics of G Proteins |
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Definition
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Term
| What is the physiological action of NE on an α1 receptor of an effector organ? |
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Definition
α1 receptor of effector organ interacts with G protein. alpha unit of G protein replaces GDP with GTP and activates. alpha unit breaks away and reacts with Phospholipase C (PLC) PIP2→ IP3 and Diacyleglycerol (DAG). They work together to produce Protein Kinase C
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Term
| What is the physiological action of NE on a β receptor of an effector organ? |
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Definition
Receptor interacts with G portein alpha subunit of G protein replace GDP with GTP alpha subunit reacts with Adenylyl cyclase ATP→cAMP
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