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