Central chemoreceptors of the central nervous system are located on the ventrolateral medullary surface.
An example of direct chemoreceptors are the cells located on the tongue. When people taste food, it is because these cells respond to the chemicals in the food, sending a signal to thebrain to let the brain know about what's happening in the mouth. Specific regions of the mouth have areas which are targeted towards specific tastes, such as salty and sweet. This explains why foods can taste different as they are chewed and swallowed, and also why some foods have an aftertaste, as certain chemicals can take longer to stimulate the chemoreceptors.
carotid body
olfactory receptors
There is a desert biome in central Australia.
The baroreceptors, located in the carotid sinuses, respond to changes and absolute levels of blood pressure. These nerves go to centers in the brain stem and trigger changes in heart rate and venous tone.
carotid
Tentacles
hydrogen ions
Carbon dioxide is the substance that acts directly on the central chemoreceptors to stimulate breathing. Increase in carbon dioxide levels in the blood triggers the chemoreceptors in the brain to increase respiration rate in order to remove excess carbon dioxide from the body.
In the AORTA and in the CAROTID ARTERY
Carbon dioxide and hydrogen ions
The central chemoreceptors located in the brainstem will increase their firing rate in response to an increase in carbon dioxide levels in the cerebrospinal fluid (CSF). This triggers an increase in ventilation to help remove excess carbon dioxide from the body and maintain normal pH levels.
Chemoreceptors that detect low oxygen levels in the body are located in the carotid bodies, which are small clusters of cells located near the carotid arteries in the neck, and in the aortic bodies near the aortic arch. These chemoreceptors send signals to the brain to trigger breathing adjustments to increase oxygen intake.
The brain detects high CO2 levels in the blood through specialized chemoreceptors called central chemoreceptors, located in the medulla oblongata. These receptors are sensitive to changes in the pH of the cerebrospinal fluid caused by high levels of CO2, triggering an increase in ventilation to remove excess CO2 from the body.
Chemoreceptors in the body, specifically central chemoreceptors in the brain and peripheral chemoreceptors in the arteries, can detect changes in blood oxygen levels. When oxygen levels drop below a certain threshold, these receptors send signals to the brain to increase respiratory rate and depth to bring in more oxygen.
chemoreceptors
Yes, olfaction, which is the sense of smell, results from the stimulation of chemoreceptors located in the olfactory epithelium in the nasal cavity. These chemoreceptors detect molecules in the air, triggering neural signals that are sent to the brain for interpretation as different scents.