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What is the pathway of smell from the olfactory receptors to the brain?
The olfactory bulb is a small , match-head sized organ in the top of the nasal cavity,and is connected to hundreds of olfactory hairs, or cilia, which lie in a layer of mucous. These have receptor sites, and it is still not well understood how these work, but one theory is that the shape of the molecule (of the substance being smelt) and the way in which it locks onto the receptor determines the impulses sent to the brain. (the bulb is thought of as a direct extension of the brain) If this is true, it may help explain why with prolonged exposure to a smell, you will stop smelling it until you go outside and clear the nose and come back.The receptor sites become saturated with the molcules and stop sending nerve impulses.
What is the usual path of message received by the body from the environment?
sense organ-nerves-spinal cord-brain
How do rats in a maze navigate their way to find the cheese?
Rats in a maze navigate their way to find the cheese by using their sense of smell and memory to remember the path they took to reach the cheese. They rely on their ability to learn and remember the layout of the maze to find the cheese efficiently.
In the respiratory system what is the throat?
The throat is also called the pharynx and is shared with the digestive system, or gastrointestinal tract. It provides an avenue for food and liquid to find its way to the esophagus during swallowing (deglutition), and it also provides a path for air to enter the trachea on its way to the lungs.
What carries electrical impulses from the ear to the brain?
The auditory nerve carries electrical impulses from the ear to the brain. It connects the hair cells in the cochlea of the inner ear to the brainstem, allowing sound signals to be transmitted and interpreted by the brain.
What is the usual path of messages receive by the body from the environment?
sense organ-nerves-spinal cord-brain
Why might an injury to the spinal cord result in paralysis?
The nervous system would not have a path through which to send messages to the brain.
What device determines the destination and optimal path for messages?
router
What path does inhaled air go through?
your nose
Why did blood rush out of R Budd Dwyers nose after he suicided?
Because when he fired the handgun, the bullet went through the roof of his mouth, through his nasal cavity, and through his brain, all of which are very full of blood vessels. The blood will flow out through the easiest path, which would be his nose.
How does a nose cone on a bottle rocket affect its flight path?
While a nose cone can either reduce or add drag, it provides a minimal amount of stability to the rocket' flight path. The fins are the most critical component for stabilizing a rocket's flight path; that's where your focus should be.
Can mice smell food if it is marked along a path and for how long?
Part dog part human
Diagram for denovo pathway?
why denovo path way absent in R.B.C.and brain?
Do all messages from the body travels to the brain through the spinal cord?
The nerves, spinal cord and brain work together to keep you aware of what's going on with the body and get messages out to the muscles and other body systems. Not all nerve messages are handled by the brain though and so not all involve the spinal cord, the main path way to the brain from the body's nerves. In addition there are some other routes for information to get to the brain. Some areas of the body are under "local control" and do not require brain commands or the use of the spinal cord. This would include the involuntary muscles ( e.g. you don't have to think Beat ... beat ... beat at your heart all day) and glands which secrete hormones and enzymes in response to chemical conditions in the body (e.g. no brain commands go to the pancreas) Some nerve responses only go as far as the spinal cord and then are bounced back to the originating area without the brain's input. An example, if you prick your finger the pain input is bounced back to the arm muscles to pull your finger away without the brain's input. A secondary message goes to the brain to notify it of the pain. A lot of the body nerve input does go through the spinal cord. Muscle position information, pain messages, pressure, heat. A lot of the messages from the brain follow the return route (muscle movement) There are however some nerve impulses which get hard wired directly into the brain. As an example the eyes contain the optic nerves which are essentially brain tissue poking through the front of your face. This results from the need to have almost instantaneous awareness of what is going on visually. Routing nerve messages through the spinal cord would take too long and the lateness of the information would make hunting (like a bird chasing flying insects) or jumping from limb to limb (as a monkey does) impossible.
Do involuntary responses include the spinal cord and not the brain?
No, the brain reads all signals and controls the entire body. The spinal cord is just a "path" for the neurons to take to get to the brain.
What path does air take when you inhale?
Mouth/nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli and capillaries.
What is the pathway of smell from the olfactory receptors to the brain?
The olfactory bulb is a small , match-head sized organ in the top of the nasal cavity,and is connected to hundreds of olfactory hairs, or cilia, which lie in a layer of mucous. These have receptor sites, and it is still not well understood how these work, but one theory is that the shape of the molecule (of the substance being smelt) and the way in which it locks onto the receptor determines the impulses sent to the brain. (the bulb is thought of as a direct extension of the brain) If this is true, it may help explain why with prolonged exposure to a smell, you will stop smelling it until you go outside and clear the nose and come back.The receptor sites become saturated with the molcules and stop sending nerve impulses.
