tectum

Noun

Meaning

(neuroanatomy) The dorsal portion of the midbrain of vertebrates; in mammals, containing the superior colliculus and inferior colliculus

The interconnected outer surface of a spore.

Examples

These two layers are the tectum and the foot layer, which is just above the intine. Source: Internet

In ray-finned fishes (by far the largest group), the optic tectum has a layer—the marginal layer—that is cerebellum-like. Source: Internet

The tectum and foot layer are separated by a region called the columella, which is composed of strengthening rods. Source: Internet

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