BMS129 Lecture Notes - Lecture 8: Enteric Nervous System, Sympathetic Nervous System, Autonomic Ganglion

45 views4 pages

ochregnat705

13 Jun 2018

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

NERVOUS SYSTEM

Lecture 8 - Autonomic NS Anatomy

Document Summary

List differences between the autonomic (ans) and somatic nervous systems. 1st neuron in lateral not anterior horn of grey matter of brain (preganglionic) Synapse with 2nd neuron in autonomic ganglion that synapses with effector (postganglionic) List & describe 2 structural differences between the 2 divisions of the ans. Describe the general properties of visceral reflexes and give an example. Unconscious, automatic responses to stimulation of glands, cardiac or smooth muscle. Example: high blood pressure: receptors detect internal stimuli: stretch, blood chemicals, etc. Detected by arterial stretch receptors: afferent neurons, efferent neurons. Connect to interneurons in cns carries signal to cardiac centre in medulla oblongata. Ans is the efferent neurons of these reflex arcs. Signals travel to the heart via vagus nerve: effectors glands, smooth or cardiac muscle. Describe the relationship between the adrenal glands and the sns. Paired adrenal glands on superior pole of each kidney. Receives innervation from preganglionic fibres it secretes the epinephrine.

Related Questions

1. The autonomicnervous system consists of a _________ neuron chain that branchesinto the periphery. <?xml:namespace prefix = o ns ="urn:schemas-microsoft-com:office:office" />

2. There are twodivisions of the ANS, the parasympathetic and the sympathetic. Theparasympathetic division __________ body energy requirements and ismost active during________________. The sympathetic divisiongenerally enables the body to use stored energy and is activeduring ______________.

3. Compared to thesomatic nervous system, the first neuron in the ANS is ___________myelinated. The second order neuron is generally un____________.

4. The second orderneuron in the chain that innervates the adrenal glands is reallythe release of NE and Epi into the ____________________.

5. The __________nerve is the parasympathetic branch that innervates the heart aswell as a majority of other visceral organs.

6. The first orderneuron in the ANS chain almost always releases ________________into the synapse. The NTs released from the second order neurons ofthe sympathetic division are usually ________________ and___________________, while the second order neuron of the PNSusually releases _____________________.

7. Theparasympathetic division is sometimes called the _______________division because of the location from which the nerves arise.

8. The sympatheticdivision is sometimes called the _______________ division becauseof the location from which the nerves arise.

9. Which nervecarries about 90% of all parasympathetic traffic?

10. Most tissues/organs arecontinuously innervated by the ANS, that is, they have ____________tone.

11. The ANS regulatesunconscious processes that maintain _____________________, a termcoined by Walter Canon.

12. List and understand thethree different routes for preganglionic neurons in the sympatheticbranch.

13. Compare and contrast theneuronal divergence (pre- to postganglionic neurons) of the PNS andthe SNS. What does this mean? How does the adrenal gland and itmedullary secretions affect these contrasting effects?

14. The ganglions in the PNSare __________ to the effector organs than the ganglions in theSNS. Considering myelination, how does this affect speed oftransmission between the two systems?

15. List the receptor typesfor Ach and NE. Which are usually excitatory, inhibitory orboth?

16. The smooth muscle aroundthe blood vessels is innervated by the sympathetic branch of theANS. What occurs to dilate those vessels?

Type your question here

fuchsiatrout703

BMS129 Lecture Notes - Lecture 8: Enteric Nervous System, Sympathetic Nervous System, Autonomic Ganglion

Document Summary

Get access

Related Documents

BMS129 Lecture Notes - Lecture 9: Sympathetic Nervous System, Parasympathetic Nervous System, Bronchodilator

BMS129 Lecture Notes - Lecture 10: Sensory Neuron, Referred Pain, Receptive Field

BMS129 Lecture Notes - Lecture 1: Cortisol, Inositol Trisphosphate, Melanin

Related Questions