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There are twelve cranial nerves in total. The olfactory nerve (CN I) and optic nerve (CN II) originate from the cerebrum. Cranial nerves III – XII arise from the brain stem (Figure 1). They can arise from a specific part of the brain stem (midbrain, pons or medulla), or from a junction between two parts: Midbrain – the trochlear nerve (IV) comes from the posterior side of the midbrain. It has the longest intracranial length of all the cranial nerves. Midbrain-pontine junction – oculomotor (III). Pons – trigeminal (V). Pontine-medulla junction – abducens, facial, vestibulocochlear (VI-VIII). Medulla Oblongata – posterior to the olive: glossopharyngeal, vagus, accessory (IX-XI). Anterior to the olive: hypoglossal (XII). The cranial nerves are numbered by their loca
Many U.S. hospitals still perform traditional surgery, over minimally invasive procedures, according to Johns Hopkins University researchers. Also, a new study on HPV vaccines. Wendy Gillette reports on the day's top health stories.
The ureter can become obstructed due to conditions such as kidney stones, tumors, infection, or blood clots. When this happens, physicians can use image guidance to place stents or tubes in the ureter to restore the flow of urine to the bladder. A ureteral stent is a thin, flexible tube threaded into the ureter.
Testicular sperm aspiration (TESA) is a procedure performed for men who are having sperm retrieved for in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI). It is done with local anesthesia in the operating room or office and is coordinated with their female partner's egg retrieval.
A central venous catheter, also called a central line, is a long, thin, flexible tube used to give medicines, fluids, nutrients, or blood products over a long period of time, usually several weeks or more. A catheter is often inserted in the arm or chest through the skin into a large vein.
Methotrexate works by reducing the function of the cells that are causing inflammation in the joint tissues. "Its use can reduce inflammation and therefore should help relieve pain and protect from joint damage," notes Sean A. Whelton, MD, a rheumatologist and associate professor of medicine at MedStar Georgetown University Hospital in Washington, D.C. Less inflammation in the joints should mean less joint pain and less joint swelling. You should also feel less fatigue and less morning stiffness.
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Coloscopy | Colon Polyp Resection | Polypectomy
Colonoscopies are essential for detecting colorectal abnormalities, including colon polyps. Polypectomy, the surgical removal of these growths, can prevent them from becoming cancerous. This article offers a brief overview of colonoscopies, colon polyps, and polypectomy procedures.
A colonoscopy is an endoscopic examination allowing healthcare providers to visualize the colon and rectum using a colonoscope. The colonoscope, a flexible tube with a camera and light source, helps detect abnormalities, including polyps or tumors.
Colon polyps are abnormal growths arising from the colon's inner lining. While most polyps are benign, some can become malignant. Adenomatous polyps have a higher potential to become cancerous, whereas hyperplastic and inflammatory polyps pose a lower risk.
Polypectomy involves removing colon polyps during a colonoscopy. Two primary techniques include snare polypectomy, using a wire loop to cut the polyp, and cold forceps polypectomy, which employs forceps to grasp and remove smaller polyps.
Following a polypectomy, patients may experience mild discomfort or bleeding. Regular surveillance is crucial to minimize colorectal cancer risk. The frequency of surveillance colonoscopies depends on the number, size, and type of polyps found, as well as the patient's overall risk factors.
Colonoscopies and polypectomies play vital roles in detecting and removing colon polyps, reducing the risk of colorectal cancer, and maintaining optimal colon health.
Do you want to learn more about colon polyps and colonoscopy? check our:
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Parkinson disease (PD) is a common neurodegenerative condition. Typically beginning in the sixth or seventh decade of life, it is characterized by the unilateral onset of resting tremor in combination with varying degrees of rigidity and bradykinesia. PD was originally described by James Parkinson (1755-1824), a man of many talents and interests. Parkinson published works on chemistry, paleontology, and other diverse topics. Early in his career he was a social activist championing the rights of the disenfranchised and poor. His efforts in this area were enough to result in his arrest and appearance before the Privy Council in London on at least one occasion. In collaboration with his son, who was a surgeon, he also offered the first description in the English language of a ruptured appendix. His small but famous publication, "Essay on the Shaking Palsy," was published in 1817, seven years before his death. The clinical descriptions of 6 cases was remarkable in part because he never actually examined the people he described. Instead, he had simply observed these people on the streets of London.
Devi Shetty, founder of Narayana Health in India, reflects on the remarkable fact that, after 26 years of operation, the cost of heart surgery at Narayana Health has come down dramatically, and shares some of the strategies used to maintain high quality with low patient cost.
Learn more about the Creating Emerging Markets Project and explore its many compelling interviews: https://www.hbs.edu/creating-e....merging-markets/Page