I think the correct answer would be the second option. Some reptiles, like snakes, have olfactory receptors (smell) on the roof of their mouths. As we can observe, snakes usually flick their tongues. This action is made so that they would collect substances from the ground or the air. Their tounges do not have the receptors for smell and taste rather it is located in the roof of the mouth or the vomeronasal. As the tongue goes inside the mouth of the snake, it is being received by the receptors in the mouth and would transmit a number of signals to the brain. The tongue simply deposit the substances that was collected onto the mouth.
In medusae, mesoglea comprises the bulk of the animal and forms a resilient skeleton. In polyps, the water-filled coelenteron acts as a hydrostatic skeleton, which, in concert with the mesoglea, maintains the form of these animals. Muscles in cnidarians are extensions of the bases of ectodermal and endodermal cells.
The presence of two peripheral efferent neurons in a pathway is typical of the autonomic division. The autonomic division is part of the vertebrate nervous system and this system is responsible for involuntary action regulation (regulation of the intestines, heart, and <span>glands).
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1st Q : Sugar 2nd Q : Insulin 3rd Q : idk Tbh
