Bifurcation of trachea
The division of the trachea into the right and left main bronchi; it occurs at the level of the fifth or sixth thoracic vertebral body and is marked internally by the presence of a carina or keel-like ridge between the diverging bronchi.
Synonym: bifurcatio tracheae.
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..
Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be pre..
Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..