olfactory nerves


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Related to olfactory nerves: Optic nerves

olfactory nerves

The nerves of smell and the first of the 12 paired CRANIAL NERVES arising directly from the brain. The olfactory nerves lie on the floor of the front section of the cranial cavity and run forward, close together, over the roof of the nose. From their terminal bulbs many tiny, hair-like filaments pass down through perforated bony plates (cribriform plates) into the upper part of the nose. Tiny particles of odorous material dissolved in the nasal secretions can be detected by the olfactory nerve endings with great sensitivity and discrimination.
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Later, when snail weight is better approximated by the logistic equation, cells that are contiguous with neurons in the procerebral apex are seen in the peritentacular and olfactory nerves.
Morphologic and behavioral studies have shown that the olfactory system recovers after bilateral olfactory nerve transection (BNX).
OECs are present throughout the course of the olfactory nerves and can be harvested at the OM and the OB.
A day after severing the olfactory nerves of mice, the researchers began administering vitamin A.
BACKGROUND: Studies in monkeys with intranasally instilled gold ultrafine particles (UFPs; < 100 nm) and in rats with inhaled carbon UFPs suggested that solid UFPs deposited in the nose travel along the olfactory nerve to the olfactory bulb.
While I'd been dreading "dissect and label the olfactory nerves of a dogfish", we actually got "dissect and label the nervous system of an earthworm".
The second study found that the zinc gel in Zicam can't get all the way up the nose to the olfactory nerves, even when it's sprayed.
Some of the olfactory nerves that transmit smell signals pass through the limbic system, so certain smells stimulate intense memories and recreate experiences.
In the highest part of the nasal cavity are olfactory nerves which pick up smell and send its sensations to the olfactory lobe of the brain which records the smell.
Hot food gives off more vapor, which is sensed by the olfactory nerves.
It spreads through submucosal planes to the surrounding structures and involves anterior cranial fossa destroying the cribriform plate with propagation along the perineural spaces of olfactory nerves.
To put it simply, our ability to smell is generated by certain nerve cells at the top of the nose; these send signals through the olfactory nerves to the olfactory cortex in the brain.