Autonomic Nervous System
Mechanism of Accommodation: The accommodation reflex is controlled by the autonomic nervous system (ANS) and involves both sympathetic and parasympathetic pathways.Parasympathetic control: The parasympathetic nervous system plays the primary role in accommodation.
AUTONOMIC NERVOUS SYSTEM
- Nicotinic receptor sites do not include which of the following?
- A. Bronchial smooth muscleB. Adrenal medullary cellsC. Parasympathetic gangliaD. Skeletal muscle end platesE. Sympathetic ganglia
- Which of the following is the neurotransmitter agent normally released in the sinoatrial node (SAN) of the heart in response to an increase in blood pressure?
- A. AcetylcholineB. DopamineC. EpinephrineD. GlutamineE. Norepinephrine
- Which of the following drugs facilitates catecholamine transmitter release from adrenergic nerve endings?
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What our notes say
- Mechanism of Accommodation: The accommodation reflex is controlled by the autonomic nervous system (ANS) and involves both sympathetic and parasympathetic pathways.Parasympathetic control: The parasympathetic nervous system plays the primary role in accommodation. (MEDICAL PHYSIOLOGY II ESsays)
- Muscle contractions and intense pleasure characterize this phase, which is mediated by the autonomic nervous system. (Medical Physiology Pp2 Year 2)
- Gastrointestinal hormones, in conjunction with the enteric and autonomic nervous systems, are essential for integrating and coordinating the mechanisms responsible for the movement, digestion, and absorption of ingested meals. (LECTURE 7: GI tract Hormones)
- As involuntary muscles, they are controlled by signals from the brain and the autonomic nervous system. (Genetic and Autoimmune Causes with Focus on Affected Proteins)
- The following statements apply to neurotransmitters of the autonomic nervous system EXCEPT: (cat 2 2014 — Source Paper Awaiting Edit)
- These statements hold true about the functions of the autonomic nervous system EXCEPT: (cat 2 2014 — Source Paper Awaiting Edit)
Study material on Autonomic Nervous System
Practice questions on Autonomic Nervous System
The following statements apply to neurotransmitters of autonomic nervous system except ---
- All preganglionics are cholinergic.
- All parasympathetic postganglionics are cholinergic.
- Stored in vesicles
- Sympathetic postganglionics to sweat glands are adrenergic.
- Synthesized in axon varicosities
Answer: A.
These statements hold true about the functions of the autonomic nervous system except ---
- The enteric system is independent.
- Acetylcholinesterase combines choline and acetate.
- Norepinephrine is metabolized by monoamine oxidase.
- Circulating catecholaminesare degraded in the liver.
- Amine derived hormones are involved.
Answer: A.
The following apply to the autonomic nervous system except ---
- divided into sympathetic and parasympathetic divisions
- parasympathetic division has craniosacral "outflow"
- acts as a control system
- it is exclusively motor in function
- most actions are involuntary
Answer: A.
Complete Marked out of 1.00 In the autonomic Nervous system all the following statements are correct Except: Select one:
- A. b. In parasympathetic ganglia, the ratio of preganglionic fibres to Postganglionic fibers is 1:32.
- B. c. The splanchnic nerves contain sympathetic preganglionic fibres.
- C. a. In sympathetic ganglia, the ratio of preganglionic fibres to postganglionic fibres is 1:32.
- D. e. The vagus nerve contains parasympthetic Preganglionic fibres
- E. d. Stimulation of Oculomotor nerve produces accommodation.
Answer: A.