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Explain the difference between sympathetic and parasympathetic reactions as they occur in the autonomic nervous system?
The sympathetic nervous system is most active when you are in an emergency, exercising, or an exciting or embarrassing situation. It is often referred to as the "fight-or-flight" system. It increases the heart rate, blood pressure, and blood glucose levels. It also dilates the bronchioles of the lungs, and dilates the blood vessels of the skeletal muscles. This nervous system enables the body to cope rapidly with situations. The parasympathetic nervous system is active when the body is resting. It is referred to as the "resting-and-digesting" system. It conserves your body's energy by slowing the heart rate. It also promotes digestion.sypmathetic is the "fight or flight" response and the parasympathetic is the "rest and digest" responses
What part of the brain is responsible for involuntary processes?
The brainstem, specifically the medulla oblongata, is responsible for controlling involuntary processes such as breathing, heart rate, and swallowing. These functions are crucial for maintaining life and occur automatically without conscious effort.
Does cell division require energy to occur?
Yes, cell division requires energy to occur. This energy is needed for various processes such as duplicating DNA, separating chromosomes, and forming new cell membranes.
How is meiosis I different from mitosis in terms of the number of divisions that occur?
In meiosis I, there is one division that occurs, while in mitosis, there is one division that occurs.
What is an sympathetic pain?
Sympathetic pain is when a person experiences pain in one part of the body as a result of a problem in another part of the body. This can occur due to the interconnected nature of the nervous system and can manifest as referred pain, where the pain is felt in a different location than the actual source of the problem.
What causes the activation of the parasympathetic division of the ANS?
The parasympathetic division of the autonomic nervous system is typically activated in situations of rest and relaxation, such as after a meal or during sleep. It counteracts the "fight or flight" response of the sympathetic division, promoting activities like digestion, conservation of energy, and restorative processes in the body. Stimulation of the parasympathetic nerves can also occur through activities like deep breathing, meditation, and gentle exercise.
Is sympathetic active after you have eaten a meal?
Unless some other factor (e.g., a bear trying to attack you) activates your sympathetic nervous system, the parasympathetic, not the sympathetic, nervous system is active after eating. Parasympathetic activation results in a decline of the stress hormones epinephrine and norepinephrine, which allows blood to be directed towards the digestive system so that digestion and absorption of nutrients can occur. When the sympathetic nervous system is activated, blood is diverted from the "non-essential" organs, such as the digestive system, and towards the heart, brain, and muscles.
What is another name for craniosacral division?
Parasympathetic part of autonomic system. It is also called the craniosacral division because the preganglionic neurons occur in the brainstem and sacral regions. Similarly, the sympathetic part of autonomic system also called the thoracolumbar division because the preganglionic neurons occur in the thoracic and lumbar segments of the body.
What division of the nervous system Returns the body to normal resting levels after the fight or flight response?
The parasympathetic division of the autonomic nervous system is responsible for returning the body to normal resting levels after the fight or flight response. It promotes activities that occur when the body is at rest, such as digestion, and works to conserve energy.
When will sympathetic division works?
The sympathetic division of the autonomic nervous system is activated during "fight or flight" responses to stress or danger. This can occur in various situations, such as when encountering a threat, feeling anxious, or engaging in physical exertion.
Explain the difference between sympathetic and parasympathetic reactions as they occur in the autonomic nervous system?
The sympathetic nervous system is most active when you are in an emergency, exercising, or an exciting or embarrassing situation. It is often referred to as the "fight-or-flight" system. It increases the heart rate, blood pressure, and blood glucose levels. It also dilates the bronchioles of the lungs, and dilates the blood vessels of the skeletal muscles. This nervous system enables the body to cope rapidly with situations. The parasympathetic nervous system is active when the body is resting. It is referred to as the "resting-and-digesting" system. It conserves your body's energy by slowing the heart rate. It also promotes digestion.sypmathetic is the "fight or flight" response and the parasympathetic is the "rest and digest" responses
What is unopposed sympathetic activity?
Unopposed sympathetic activity is when the sympathetic nervous system is overly stimulated without a counterbalancing effect from the parasympathetic nervous system. It can lead to symptoms such as rapid heart rate, high blood pressure, sweating, and feelings of anxiety or agitation. This imbalance can occur in conditions like panic attacks or certain drug overdoses.
If your body starts to feel relaxed what part of the nervous system is becoming more active?
Parasympathetic nervous system helps your body start to feel relaxed as your nervous system becomes more active.
Compare between sympathetic and parasympathetic in reflex arc?
In parasympathetic reflex arc the preganglionic nerve fibre is longer than post ganglionic fibre, that is the synapse occur near the organ or tissue. While in sympathetic reflex arc both the pre and post have moderate sizes. The postganglionic fibre of parasympathetic always secrete acetylcholine as nuerotransmitter while postganglionic fibre of sympatheic reflex arc mostly secrete norepinephrine or epinephrine as nuerotransmitter. Some nerve fibres may secrete acetylcholine. For example postganglionic sympatehtic nerve fibres of sweat glands, pilorectal muscles and few blood vessels
When does cellular division occur?
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What part of the brain is responsible for involuntary processes?
The brainstem, specifically the medulla oblongata, is responsible for controlling involuntary processes such as breathing, heart rate, and swallowing. These functions are crucial for maintaining life and occur automatically without conscious effort.
Can bradycardia and hypertension occur concurrently?
Yes. In the Cushing's reflex, which is due to traumatic head injury resulting in an increased intracranial pressure, the body exhibits what is called the CNS ischemic response. This response is due to activation of both the sympathetic nervous system (which constricts veins and arterioles to increase both peripheral resistance and increase venous return to the heart) and the parasympathetic nervous system (which acts to slow the heart rate by overriding sympathetic stimulation on the heart). This results in a concurrent bradycardia and hypertension
