The human body is in constant motion. Your blood flows, your lungs inflate, you pass gas, and your body hums along at high sppeds. But just how fast do ...
How does the brain process an external stimulus? How does a neural impulse travel down an axon so quickly? How do synapses and arch reflex explain reaction time? How long does it take to signal the muscles to move with nerves? What is a stimulus response in biology? What ...
Fasting before a blood test is important to obtain accurate readings. When you consume food, your body has to process the food's components as they travel through your bloodstream. Blood tests examine a variety of blood and sugar levels that can be compromised if foreign entities, such as foo...
In the case of obesity, systemic inflammation is the suspected cause of cognitive decline. A 2017 University of Arizona study revealed a relationship between high body mass index, the presence of C-reactive protein (CRP) in the blood, and a more rapid rate of decline in brain function over ...
Diabetes disrupts the body's ability to regulate blood sugar levels. Over time, chronically high blood sugar can damage delicate blood vessels throughout the body, including those in the retina and the light-sensitive layer at the back of the eye. This damage can lead to various eye conditions...
These hormones, in turn, travel to different tissues and regulate many bodily functions, such as metabolism, growth and sexual function, according to Johns Hopkins Medicine. For example, the pancreas releases the hormones insulin and glucagon to regulate blood sugar. Conditions like diabetes and ...
“When they went back to the short sleep schedule of only five hours a night, their body failed to control blood sugar. 【4】”So what should we do if sleeping in over the weekend is not a good choice Professor Wright put it in two words: sleep longer. Cut out the “sleep stealers...
Exercising increases blood flow to your whole body, including your brain. For most healthy adults, the Department of Health and Human Services recommends at least 150 minutes a week of moderate aerobic activity(有氧运动), such as walking, preferably spread throughout the week. ...
It increases blood pressure, makes the heart beat quicker and makes people breathe deeper; it also works on several groups of muscles in the face, the stomach, and even the feet. If laughter exercises the body, it must be beneficial. Other tests have shown that laughter appears to be able...
Once an innate immune cell, such as a macrophage or other antigen-presenting cell (APC) engulfs an invading bacteria, virus, or vaccine, they often travel to a lymph node and present an antigen from that pathogen on the cell surface toT cells. They present the new antigen using specific ...