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Cardiovascular effects of the sympathetic division include?
When a sympathetic response is triggered in the body the heart rate increases, and the strength of the contractions of the heart also increases. The airways dilate which increases airflow. Blood vessels constrict, and therefore blood pressure rises.
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.
What of the effects could result from activation of the sympathetic nervous system?
A prominent class of motor neurons in the sympathetic nervous system are involved with vasoconstriction also with an increase in the heart rate.
The autonomic nervous system contains two branches called the?
The autonomic nervous system also has two divisions: the sympathetic division and the parasympatheticdivision. These two divisions have antagonistic (opposing) effects on the internal organs they innervate (send nerves to act on).The sympathetic division, shown at the left, is the emergency system. It prepares the body to put out energy and to protect it from effects of injury. It shuts the gut down, speeds up the heart, increases blood pressure, dilates (makes bigger) the pupils of the eyes, makes more glucose (blood sugar) available in the blood for energy, etc. Cannon described these reactions as preparation for fight or flight (running away).The parasympathetic division, shown at the right, is the "housekeeping" division. It acts to replace and recover from the activities of living. Its action is (almost always) the opposite of the sympathetic division. It activates the gut for digestion, slows the heart rate, decreases the blood pressure, etc.
Which part of the autonomic nervous system cause increase blood levels?
The sympathetic division causes increases in blood levels to prepare the body to cope with external pressure/ situations (danger, excitement). It is also known as the fight or flight subdivision.
The effects of sympathetic and parasympathetic stimulation of the salivary glands are called?
complementary
What is a Sympathomimetic?
Denoting a drug that mimics the effects of stimulation of organs and structures by the sympathetic nervous system.
What is the difference between sympathomimetic and sympatholytic drugs?
A sympathomimetic drug mimics the physiological effects caused by the stimulation of the sympathetic nervous system. Note the keyword : Mimic A sympatholytic drug oppses/ blocks the physiological effects caused by stimulation of the sympathetic nervous system HOPE THIS HELPS! :)
How can the heart overcome excessive vagal stimulation?
Excessive vagal stimulation can be overcome by engaging in activities that increase sympathetic tone, such as exercise or deep breathing. In severe cases, medications like atropine can be used to block the effects of excessive vagal stimulation on the heart.
When the sympathetic division of the autonomic nervous system is activated its effects can be prolonged by secretions of the?
When the sympathetic division of the autonomic nervous system us activated its effects can be prolonged by the secretions of the epinephrine by the adrenal medulla. Adrenal medulla is the inner most part of the adrenal gland.Ê
What is a anti-adrenergic drug?
Antiadrenergic drugs decrease or block effects of sympathetic nerve stimulation, endogenous catecholamines (e.g. epinephrine), and adrenergic drugs.
What best demonstrates an example of cooperation of the parasympathetic and sympathetic nervous systems?
The best example of cooperative autonomic effects is seen in controls of the external genitalia. Parasympathetic stimulation causes vasodilation of blood vessels in the external genitalia, and is responsible for erection of the male penis or female clitoris during sexual excitement. Sympathetic stimulation then causes the ejaculation of semen by the penis or reflex contractions of the vagina during an orgasm.
The secretion of the adrenal medulla act to supplement the effects of?
The secretion of the adrenal medulla acts to supplement the effects of the sympathetic nervous system by releasing hormones such as adrenaline (epinephrine) and noradrenaline (norepinephrine). These hormones help prepare the body for fight or flight responses by increasing heart rate, dilating airways, and redirecting blood flow to essential organs.
Dual innervation refers to an organ receiving?
Dual innervation refers to an organ receiving input from both the sympathetic and parasympathetic divisions of the autonomic nervous system. This allows for precise regulation of the organ's function by balancing the effects of these two opposing systems. Examples include the heart receiving both sympathetic stimulation (increasing heart rate) and parasympathetic stimulation (slowing heart rate).
Does the autonomic nervous system may cause activation or inhibitiom depending on the division that is active and the target that is affected?
Yes, the autonomic nervous system can cause either activation or inhibition depending on whether the sympathetic division or parasympathetic division is active, and which target organ is being affected. The sympathetic division generally activates the fight-or-flight response while the parasympathetic division promotes rest and relaxation.
Which has more specific local control the sympathetic or parasympathetic division of the autonomic nervous system?
The sympathetic division of the autonomic nervous system typically has more specific local control. This is because sympathetic nerves release norepinephrine at specific target tissues, allowing for precise modulation of target organ responses. In contrast, the parasympathetic division releases acetylcholine more diffusely, leading to more widespread effects on multiple target organs.
What is between the sympathetic and the parasympathetic nervous system?
The parasympathetic and sympathetic divisions of the autonomic nervous system or antagonistic. They have opposing effects.
