carotid body
Học thuậtThân thiện
Definition
Noun: A carotid body is a small cluster of chemoreceptor cells and supporting tissues located near the point where each common carotid artery branches (bifurcates) into internal and external arteries. Its primary function is to monitor the chemical composition of the blood, specifically oxygen, carbon dioxide, and pH levels, and to send signals to the brain to help regulate breathing (respiration).
Usage
The term is used in medical, anatomical, and physiological contexts to describe this specific sensory organ. - It functions as a sensor for blood gases. - It is a key component in the body's homeostatic control of respiration.
Examples
- Noun:
- The carotid body is essential for the rapid breathing response during low oxygen levels.
- Doctors studied the patient's carotid body function to understand their breathing disorder.
- A tumor of the carotid body, known as a chemodectoma, is rare but possible.
Advanced Usage
- Carotid body denervation: A surgical procedure that involves cutting the nerve from the carotid body, sometimes performed to treat severe conditions like heart failure or certain breathing disorders.
- The patient underwent carotid body denervation to reduce excessive sympathetic nerve activity.
Variants and Related Words
- Glomus caroticum: The Latin medical term for the carotid body.
- Chemoreceptor: A sensory receptor that responds to chemical stimuli. The carotid body is a type of peripheral chemoreceptor.
- Carotid sinus: A dilated area near the same carotid bifurcation that contains baroreceptors (pressure sensors), often discussed alongside the carotid body but with a different function.
Synonyms
- Carotid glomus
- Glomus caroticum
Note: There are no common idioms or phrasal verbs associated with this specific anatomical term.
Noun
- a chemoreceptor located near the bifurcations of the carotid arteries; monitors oxygen content of the blood and helps control respiration