Anatomy & Physiology, WHY-ZYG

Human beings have long been curious about the way that things work, and that curiosity includes wondering about how we ourselves work. The fields of anatomy and physiology involve studying the structures of bodies and the way that those structures and bodies function.
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Anatomy & Physiology Encyclopedia Articles By Title

Why Do Our Noses Have Two Nostrils?
When it comes to eyes and ears, pairs make sense. Paired eyes give us stereo vision, which allows us to see objects......
Why Do People Blush?
People blush mainly in response to emotions such as embarrassment, shame, or confusion. When someone feels these......
Why Do Salmon Die After Spawning?
Salmon are biologically programmed to die after spawning, a phenomenon known as semelparity. This is a reproductive......
Why Do We Age?
Aging is a complex process influenced by a combination of various factors, including genetics, our environment,......
Why Do We Have Earwax?
Sticky, gooey, oftentimes orange, and homemade within the ears—earwax is considered a gross nuisance that people......
Why Do We Need Sleep?
We need to sleep, because it plays an important role in maintaining our overall health and well-being. Sleep gives......
Why Do Zebras Have Stripes?
There are several theories about why zebras have stripes. Scientists believe that one of the main reasons is camouflage......
Why Does Cilantro Taste Like Soap to Some People?
Cilantro (aka the leaves of the coriander plant) is a tasty herb to most people. A pleasing combination of flavors......
Why Does Hair Turn Gray?
Hair turns gray as melanocytes—the cells that generate melanin, which gives hair (and skin) its coloration—deteriorate......
Why Does Heat Relax Your Muscles?
Exercise is painful. As the cliché goes, “No pain, no gain.” When the body exerts itself, pumping action out of......
Why Is Eating Protein Important?
There are three basic macronutrients that the body needs to survive: fats, carbohydrates, and proteins. Proteins......
wing
wing, in zoology, one of the paired structures by means of which certain animals propel themselves in the air.......
Wolffian duct
Wolffian duct, one of a pair of tubes that carry urine from primitive or embryonic kidneys to the exterior or to......
wrist
wrist, complex joint between the five metacarpal bones of the hand and the radius and ulna bones of the forearm.......
xanthan gum
xanthan gum, water-soluble polysaccharide compound that is produced by the bacterium Xanthomonas campestris and......
Xg blood group system
Xg blood group system, classification of human blood based on the presence of proteins called Xg antigens on the......
yolk
yolk, the nutritive material of an egg, used as food by a developing, embryonic animal. Eggs with relatively little,......
Yt blood group system
Yt blood group system, classification of human blood based on the presence of molecules known as Yt antigens on......
zygote
zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm).......

Anatomy & Physiology Encyclopedia Articles By Title