« previous next »
« previous next »
 

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

The birth weight of human infants is tightly constrained by natural selection. The birth weight of human infants is tightly constrained by natural selection.
Nonverbal communications convey strong, powerful messages that may be negative or positive. Nonverbal communications convey strong, powerful messages that may be negative or positive.
Moderate to high physical activity in PE classes is one component of a successful prevention effort ... Moderate to high physical activity in PE classes is one component of a successful prevention effort ...
Micrograph of ice core Micrograph of ice core
Sensory and Motor Processing Sensory and Motor Processing
Sensory receptor synapses with first-order sensory neuron Sensory receptor synapses with first-order sensory neuron
Video: Role of ATP in muscle movement

For a complete list of videos, visit our video library