Blood pressure in various blood vessels and heart Blood Pressure in Various Blood Vessels and Heart: 1. What is blood pressure and how is it measured? Blood...
Does focusing on a certain part of the body increase electrical activity in that region? Yes, focusing on a certain part of the body can indeed increase...
Why does sympathetic activity constrict pulmonary vessels? Sympathetic activity leads to the constriction of pulmonary vessels through the release of norepinephrine from sympathetic nerve endings. This sympathetic...
What is the difference between optokinetic and vestibular nystagmus? Optokinetic nystagmus and vestibular nystagmus are both involuntary eye movements, but they are triggered by different mechanisms and...
Why is the V/Q Ratio 0.8 not 1? The V/Q ratio, also known as the ventilation-perfusion ratio, refers to the ratio between the amount of air reaching...
Why did a lot of common insects evolve such a thin waist? Many common insects have evolved a thin waist for several reasons, which are directly linked...
Why does the peak magnitude of the cardiac pacemaker action potential not increase to levels closer to the Ca++ equilibrium potential? The peak magnitude of the cardiac...
How does a decrease in free Ca2+ result in nerve/muscle overexcitability? A decrease in free calcium ions (Ca2+) can lead to nerve and muscle overexcitability due to...