Anatomy & Physiology, WHA-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

What Are Turtle Shells Made Of?
Turtle shells are made of bone and cartilage, but it is the form and function of the shells that make them unique......
What Causes Allergies?
Allergic reactions are caused by substances known as allergens. These substances can be found in a variety of sources......
white blood cell
white blood cell, a cellular component of the blood that lacks hemoglobin, has a nucleus, is capable of motility,......
Why Are Bees Important?
Bees are crucial to our world for several reasons, primarily due to their role as pollinators. The approximately......
Why Are There Different Blood Types?
Different blood groups are the result of genetic variations that determine the presence or absence of specific......
Why Do Giraffes Have Long Necks?
The long neck of a giraffe (genus Giraffa) is a classic example of adaptation, which is the process by which a......
Why Do Humans Have Eyebrows?
Eyebrows are like the unsung heroes of the face, quietly doing their job of protecting the eyes from the glare......
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 Zebras Have Stripes?
There are several theories about why zebras have stripes. Scientists believe that one of the main reasons is camouflage......
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......
zygomatic arch
zygomatic arch, bridge of bone extending from the temporal bone at the side of the head around to the maxilla (upper......
zygomatic bone
zygomatic bone, diamond-shaped bone below and lateral to the orbit, or eye socket, at the widest part of the cheek.......
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