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Skeletal muscles need nerve stimulation for contraction to occur?
Yes, nerve stimulation is necessary for skeletal muscles to contract. This stimulation causes an action potential to travel down the motor neuron, leading to the release of acetylcholine at the neuromuscular junction, which triggers muscle contraction by causing calcium release in the muscle fiber. Without this nerve input, skeletal muscles would not be able to contract voluntarily.
Where can one find information on the effects of electrical brain stimulation?
There are a variety of places that one can learn more information about the effects of electrical brain stimulation. One principle place that one could find information would be from a local library that carries scientific journals and studies.
Which statement correctly describes how this increased demand would lead to an increased rate of ATP production?
ATP levels would fall at first, increasing the inhibition of PFK and increasing the rate of ATP production. Correct: ATP levels would fall at first, decreasing the inhibition of PFK and increasing the rate of ATP production.
What may happen when trees are cleared in a watershed?
if this happens in a specific area, then the hill will loose all topsoil during rainstorms and there would be mudslides. It would also cause nearly all animals to vacate the area and it would become a fairly barren slope upwards. If this happens world-wide, then humans might die out due to the large amounts of oxygen trees produce and the large amounts of hills around the world.
What might happen to blood flow if we increased the number of blood cells?
Increasing the number of blood cells can lead to increased blood viscosity, which may slow down blood flow. This can potentially affect the delivery of oxygen and nutrients to tissues and create a risk for blood clots.
Excessive vagal stimulation can de caused by severe depression how would this reflect in a routine physical exam?
Low heart rate would be the most obvious sign
What happens to the heart rate with vagal stimulation?
Your heart is able to independently contract without nerve stimulation. However, frequency of these contractions if the heart was not innervated at all would roughly be 100 beats per minute. A resting individual does not need his or her heart to beat that fast to adequately supply blood to the rest of the body. So when at rest the vagus nerve (the branch innervating the heart) kicks in and slows these contractions down so as not to waste energy.
What will be the effect of cholinergic agonist on the pyloric sphincter?
A cholinergic agonist will cause the pyloric sphincter to relax, leading to increased gastric emptying. This is because cholinergic stimulation promotes smooth muscle relaxation in the gastrointestinal tract, allowing food to pass through the pyloric sphincter more easily.
Autonomic tone of peripheral blood vessels would be greatest when?
When sympathetic stimulation is increased.
Stimulation of which would cause an increase in heart rate and contraction strength?
beta 1 receptors
What would Direct stimulation of the motor cortex result in?
It would cause involuntary movement or a sense of touch on the person.
Would an increase in contractility cause an increase to cardiac output?
Yes - an increase in contractility would lead to an increase in stroke volume. An increased stroke volume would cause an increased cardiac output.
What processes would cause increased along a coastal region?
Rising sea levels and storm force winds would be good examples of processes which would cause increased abrasion along a coastal region.
What processes would cause increased abrasion along a coastal?
Rising sea levels and storm force winds would be good examples of processes which would cause increased abrasion along a coastal region.
What would stimulation of the adrenal medulla cause?
Stimulation of the adrenal medulla leads to the release of catecholamines, primarily adrenaline (epinephrine) and norepinephrine, into the bloodstream. This response prepares the body for a "fight or flight" reaction, resulting in increased heart rate, elevated blood pressure, enhanced blood flow to muscles, and heightened alertness. Additionally, it may cause the release of glucose for energy and a decrease in digestive activity. Overall, these effects help the body respond to stress or danger.
Would The parasympathetic nervous system control and allow for active diuresis?
Parasympathetic stimulation stimulates the muscarinic receptors (and nicotinic) leading to increased Salivation, Lacrimation, Urination, Defacation, increased Gastric motility, Emesis etc Baroreceptors detect increased BP (vessel stretch) and increase vagal tone - > increase parasympathetic tone ->increase muscarinic stimualtion - > diuresis Also consider the effect of Atrial Natruetic Peptide and its effect...
What processes would cause increased abrasion along coastal regions?
Rising sea levels and storm force winds would be good examples of processes which would cause increased abrasion along a coastal region.
