CAROTID BODY ANATOMY & PHYSIOLOGY скачать в хорошем качестве

CAROTID BODY ANATOMY & PHYSIOLOGY

Carotid Body: Anatomy & Function The carotid body is a vital chemoreceptor organ first described by Von Haller in 1743. It is a small, ovoid structure located within the adventitia at the posterior aspect of the carotid bifurcation. This tiny yet significant structure plays a crucial role in monitoring blood flow and pH levels, ensuring proper respiratory regulation. Functionally, the carotid body senses changes in oxygen, carbon dioxide, and pH levels in the blood. When oxygen levels drop or carbon dioxide levels rise, it sends signals to the brainstem to adjust ventilation, maintaining homeostasis. This response is particularly critical in conditions like chronic hypoxia or high-altitude adaptation. The carotid body functions through Hering’s nerve, a branch of the glossopharyngeal nerve, with minor contributions from the vagus nerve. This neural pathway allows rapid communication between the carotid body and the brainstem, ensuring swift physiological responses to blood gas changes. Understanding the carotid body is essential for medical professionals, especially in conditions like carotid body tumors, which can impact neurovascular function. Mastering its anatomy and physiology aids in better diagnosis and treatment planning in ENT and vascular surgery. #science #biology #ear #ent #nose #anatomy #nosebleed #otolaryngology #throathealth #tonsils