Types of nervous system

Июль 26, 2022

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Биология
Types of nervous system

Содержание

2. Jellyfish and hydra They have very simple nervous system. They don’t have brain or spinal cord.
3. Flatworms Their nervous system is ladder like. At the head region, there are two simple brain
4. Annelids(earthworm) and Arthropods They have segmented bodies, each segment has ganglion. Every ganglion controls own segment.
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Слайд 2

Jellyfish and hydra
They have very simple nervous system. They don’t have

brain or spinal cord.

Слайд 3

Flatworms
Their nervous system is ladder like. At the head region, there

are two simple brain like structures, which are called ganglia.

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Annelids(earthworm) and Arthropods
They have segmented bodies, each segment has ganglion. Every

ganglion controls own segment. Ventral (lower) nerve cord connects all of ganglia to each other. A simple brain connects sensory organs of head.