By: Omar Salvador
There are many different infectious animal diseases, but not all of them are zoonoses or zoonotic diseases. What are zoonotic diseases? The World Health Organization (WHO) defines zoonotic diseases as "...disease(s) or infection(s) that (are) naturally transmissible from vertebrate animals to humans." Whenever...
'Tongue-eating' parasite found in fish off coast of Jersey, Channel Islands
By: Terrence Aym
The planet Earth has many very beautiful things and some very ugly, horrific things. Few life forms are more ugly and horrific, however than the isopod tongue louse—a creature that resembles one of the mutant animals that scientists discovered, photographed and quickly destroyed after...
Humans are Doomed End of the World World Chaos
By: Peter Stern
A World in Chaos The signs are all over... I have to say that I am very concerned about the world. I don't think humans have a chance. In fact, I believe that "Humans are a doomed species." The only question I have is...
General anatomy of frogs
By: Robert Hoglund
The frog is a very unique animal because it specifically shows how an organism’s structure and function are related. There are three main systems within the frog that are important examples of this. The motility of the frog is seen in its movements, from...
The structure and function of neurons
By: Devon Begg
Neurons, also called nerve cells, are extremely important. They are mostly located in the brain. Without them, we cannot think, feel, or move our bodies. Life would not be possible without them. It would be unwise to say that neurons are simple. They are actually...
The insect world explored
By: Christyl Rivers
Insects can fill one with revulsion. They can spread disease from which millions of creatures die every minute. There would be no life on earth without them. These three facts summarize what insects do, but these are only three primary facts about those buzzing, stinging...
Overlooked facts about hemp
By: tt
Hemp 2002 Hemp has existed naturally for thousands of years. In Rethinking Hemp, Wilke (1996) said, "Hemp's history goes back 10,000 years, when paper made from it was used for Chinese documents" (p.1). The United States Constitution was written on hemp as well...
How sperm seek out an egg: The role of progesterone and ion channels
By: Daniel Cloud
Human fertilization occurs when the male reproductive cell, sperm, meets the female reproductive cell, an egg. The sperm of a male are produced inside the testes, and stored in the epidydymis. Ejaculation of sperm occurs through the head of the penis during during sexual intercourse...
How sperm seek out an egg: The role of progesterone and ion channels
By: Alicia M Prater PhD
Progesterone is a steroid hormone produced by the ovum and placenta, making it female-specific. Progesterone is responsible for preparing the uterus for pregnancy, but research published in the journal Nature in March 2011 identified another role for the hormone – conception. For decades mystery has...
By: Julie Thomas-Zucker
Herpetologists describe toad warts as the brownish-red glands located on either side of the toad head. They are parotoid glands on the toad that contains mucous and poison. Warts are a defense mechanism against anything that would harm them. When scared or roughly touched, the...

 

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