Emetics
agents that cause vomiting. They may act directly on the gastrointestinal tract, bringing about emesis through local irritant effects, or indirectly, through their effects on the chemoreceptor trigger zone in the postremal area near the medulla.
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..
This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..
This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..
