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Effect of the environment on coat color in the Himalayan rabbit Animation

By: HWC, Views: 3259

An organism's phenotype—the combination of traits that we observe—is the product of interactions between its genotype and the environment. For example. a Himalayan rabbit is completely white at birth. But within weeks, the fur on the rabbits ears, nose, tail. and lower legs darkens. The...

Female Pelvis Animation

By: Administrator, Views: 1424

The female pelvis is shaped like a basin; can be oval to round, and is wider than the male pelvis. Designed to accommodate the average fetus during pregnancy and to facilitate its downward passage through the birth canal during childbirth.

PET Scan Animation

By: Administrator, Views: 10914

Positron Emission Tomography (PET) Computer-based nuclear imaging procedure that can produce three-dimensional pictures of actual organ functioning. Ultrasonography, Brain Use of high-frequency sound waves to record echoes on an oscilloscope and film.

EpiPen Animation (Part 2)

By: Administrator, Views: 10391

An epinephrine auto-injector is a medical device for injecting a measured dose or doses of epinephrine by means of autoinjector technology. It is most often used for the treatment of anaphylaxis. The first epinephrine auto-injector was brought to market in the 1980s.

Glycolysis Animation

By: HWC, Views: 1665

In glycolysis, a six-carbon glucose molecule is split into two three-carbon pyruvate molecules. In this animation, each carbon molecule is represented by a red ball. The end products of glycolysis are two molecules of pyruvate. Glycolysis is the breakdown of glucose into two molecules of ...

Generalized life cycles for plants and animals Animation

By: HWC, Views: 1793

But the life cycles of plants and animals differ in their details. In animals, a multicelled diploid stage gives rise to single-celled haploid gametes, the eggs and sperm. These gametes combine at fertilization to form a diploid zygote, which grows and develops into a new multicelled animal...

Hemodynamics Animation

By: Administrator, Views: 11496

Hemodynamics is the dynamics of blood flow. The circulatory system is controlled by homeostatic mechanisms, such as hydraulic circuits are controlled by control systems. Hemodynamic response continuously monitors and adjusts to conditions in the body and its environment.

Primate Evolutionary Tree Animation

By: HWC, Views: 3892

Presumed evolutionary branchings in the primate family tree. The first primates arose between 85 and 65 million years ago. The common ancestor of apes and hominids branched off from Old World monkeys about 23 million years ago. The hominid lineage, which includes humans and earlier humanlik...

Origin of organelles Animation

By: HWC, Views: 1387

Possible origins of the nucleus and other organelles. Some prokaryotic cells have infoldings of their plasma membrane. These infoldings may have served as channels from the cytoplasm to the cell surface. These membranous folds may have evolved into the endoplasmic reticulum and the nuclear e...