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Plexus: Quiz


Question 1: In many animals the processes of ________ join together to form a plexus or nerve net.
Photoreceptor cellGlial cellNeuronNervous system

Question 2: In ________ the term plexus has multiple meanings:

Question 3: Almost a hundred such plexuses have been described in the human body, but the four primary nerve plexuses are the cervical plexus, ________, lumbar plexus, and the sacral plexus.
Thoracic nervesBrachial plexusIntercostal nervesIntercostobrachial nerve

Question 4: Plexuses is the characteristic form of nervous system in the coelenterates and persists with modifications in the ________.

Question 5: The nerves of the radially symmetric ________ also take this form, where a plexus underlies the ectoderm of these animals and deeper in the body other nerve cells form plexuses of limited extent.


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