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Does parasympathetic stimulation of the intestine increase or decrease motility and increase or decrease digestive gland secretion?
Parasympathetic stimulation of the intestine increases motility by promoting smooth muscle contractions and enhances digestive gland secretion by stimulating the release of digestive enzymes and fluids.
How does PNS stimulation affect the lungs?
parasympathetic system (PSNS) will a)vasoconstrict the lumen of airway by contracting smooth muscle cells along the conducting passage via M3 Receptor, b)increase mucus secretion via M3 Overall it'll interfere with normal breathing pattern and obstruct normal breathing.
What is the response to parasympathetic stimulation of the iris of the eye?
Parasympathetic stimulation of the iris leads to the contraction of the sphincter pupillae muscle, resulting in miosis, or constriction of the pupil. This response is primarily mediated by the release of acetylcholine from parasympathetic fibers, which activates muscarinic receptors in the iris. The overall effect is to reduce the amount of light entering the eye, which is particularly useful in bright lighting conditions.
What are the effects of electrical stimulation to the sciatic nerve?
Electrical stimulation of the sciatic nerve can lead to various effects, including muscle contraction in the lower limb, pain relief through the activation of pain modulation pathways, and improved blood circulation. It is often used in therapeutic settings to aid in rehabilitation, manage chronic pain, or enhance muscle function. However, excessive stimulation can cause discomfort or muscle fatigue. Overall, the effects depend on the parameters of the stimulation and the individual's specific condition.
Describe how the nerve impulse travels in the heart?
The brain can influence the heart in two ways. Sympathetic and parasympathetic stimulation. Parasympathetic stimulation of the heart is through the vagus nerve. Sympathetic stimulation of the heart is via cervical and thoracic splanchnic nerves. The heart has its own pacemaker cells, so the brain only changes the rate and contractility of the heart.
What type of muscle tissue can you find in your livers?
Smooth Muscle would be found in the liver and also throughout the GI tract. Regulated by peristalsis which is regulated by parasympathetic nervous system stimulation by cranial nerve 10 (vagus nerve) by the neurotransmitter acetylcholine ACh.
What has the author Gustaf Hellsing written?
Gustaf Hellsing has written: 'Effects of vibratory stimulation on jaw muscle function in man'
What are the medicinal actions associated with bitters?
The stimulation of gastric juices, and muscle relaxants, antiviral effects, anti-inflammatory effects, antisepsis, laxative effect, antispasmodic, antibacterial and pain relieving effects.
Is Cardiac muscle stimulation neural?
No, but skeletal muscle is.
What conclusions can you draw about the relationship between a muscle's workload and its threshold of stimulation?
As the muscle workload increase, its threshold of stimulation increases.
Why does the force of a muscle decrease over time during uninterrupted stimulation?
The muscle is said to undergo Fatigue.
What are the effects of alpha-1 receptor stimulation?
Stimulation of alpha-1 receptors causes vasoconstriction, leading to an increase in blood pressure and pupil dilation. It can also result in smooth muscle contraction in organs such as the bladder and intestine.
