« previous next »
« previous next »
 

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

A king cheetah showing its distinctive coat pattern A king cheetah showing its distinctive coat pattern
Male Turkmen in the wealthier half of the population had higher fertility rates than those in the po Male Turkmen in the wealthier half of the population had higher fertility rates than those in the po
Human chromosomes. (A) Female. (B) Male. Human chromosomes. (A) Female. (B) Male.
A radiator may be either a down-flow or a cross-flow type. A radiator may be either a down-flow or a cross-flow type.
Male Reproductive System - Testes Male Reproductive System - Testes
Male and female Lions (Panthera leo) Male and female Lions (Panthera leo)
Video: Neurotransmission at chemical synapses & Excitory and inhibitory potentials

For a complete list of videos, visit our video library