| 11. | Most research on the evolution of nervous tissue concerning nerve nets has been conducted using cnidarians.
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| 12. | Nerve nets connect sensory photoreceptors and touch-sensitive nerve cells located in the body wall and tentacles.
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| 13. | There is a nerve net that is responsible for contractions in swimming muscles and feeding responses.
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| 14. | There are many subsets of neurons within a nerve net and their placement is highly position specific.
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| 15. | The inner layer of the epidermis contains a nerve net, and myoepithelial cells that act as muscles.
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| 16. | There is no brain or centralised head region, and instead there are interconnected neurons spread out in nerve nets.
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| 17. | Unlike central nervous systems, where neurons are typically grouped together, neurons found in nerve nets are found spread apart.
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| 18. | Although animals with nerve nets lack a true brain, they have the ability to display complex movements and behaviors.
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| 19. | The emergence of true nervous tissue occurred following outgroup of Porifera and researching contemporary organisms that have nerve nets.
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| 20. | Nerve nets can provide animals with the ability to sense objects through the use of the sensory neurons within the nerve net.
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