Physiology | Senioritis

Mohamed Abbas
August 17, 2023
Physiology

The Role of Vasoconstriction in Blood Pressure Regulation and Cardiovascular Health

How does vasoconstriction increase the pressure of blood? Vasoconstriction is a process in which the smooth muscle in the walls of blood vessels contracts, resulting in a...

Mohamed Abbas
August 17, 2023
Physiology

The Science Behind Ear Rumbling and the Tensor Tympani Muscle

What causes “ear rumbling”? The phenomenon known as “ear rumbling” is caused by the contraction of a small muscle within the ear called the tensor tympani muscle....

Mohamed Abbas
August 17, 2023
Physiology

The Science of Blood Pressure

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...

Mohamed Abbas
August 17, 2023
Physiology

The Role of Attention and Electrical Activity in the Brain’s Processing of Sensory Information

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...

Mohamed Abbas
August 17, 2023
Physiology

The Role of Pulmonary Vessel Constriction During Sympathetic Activity

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...

Mohamed Abbas
August 17, 2023
Physiology

Optokinetic Nystagmus and Vestibular Nystagmus

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...

Mohamed Abbas
August 17, 2023
Physiology

Understanding V/Q Ratio

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...

Mohamed Abbas
August 17, 2023
Physiology

The Significance of a Thin Waist in Insects

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...