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Taking these steps can strengthen your immune system and better fight off germs that make you sick. Verywell / Michela Buttignol How Does Chemotherapy Work? Chemotherapy treatments are drugs that kill or damage fast-growing cells. Verywell / Michela Buttignol But chemotherapy is nonspecific and is often administered to the entire body. This means that noncancerous fast-growing body cells may also be damaged and killed. Because they’re constantly generating new cells, bone marrow is a fast-growing tissue....

They are painful and may bleed, causing so much discomfort that they can affect your quality of life. Many anal fissures heal on their own or with the assistance of things like dietary changes and home remedies. However, deeper fissures that persist may require treatment from a healthcare provider. Westend61 / Getty Images This article explains the more common symptoms and causes of anal fissures. It also offers solutuions to treat fissures yourself, as well as how to prevent them from coming back....

Jelena Stanojkovic / Getty Images Cause Anal herpes is due to theherpes simplex virus(HSV). The oozing sores will then quickly crust over and start the process of healing. Subsequent outbreaks tend to be far less severe than the first. Jelena Stanojkovic / Getty Images Infections with herpes viruses are lifelong. This means that once you get the virus, it never goes away. For those who develop symptoms, it is possible to have only one outbreak and never have another....

Anal itching is when the area around and at the edge of the anus becomes irritated and itchy. There are several reasons why anal itching could occur. These include: Causes of Anal Itching There are several possibilities for why anal itching might occur. Jamie Grill / Getty Images They include the following factors. Dietary Issues Foods that cause gas or problems with digestion could cause anal itching. Some foods also cause excess mucus, which can also irritate the bottom....

It can also metastasize (spread) rapidly throughout the body. ATC is also one of the only types of thyroid cancer that can rapidlyspread to other areasof the body. What Causes Anaplastic Thyroid Cancer? Get our printable guide for your next doctor’s appointment to help you ask the right questions. The cause of anaplastic thyroid cancer is not known, but there are severalrisk factorsthat have been identified. A diagnostic evaluation of a thyroid growth usually involves a biopsy as well....

The skin was previously viewed as abody part that protects us from the elements. Let’s learn more about how this layer is structured and what it does for us. Its thickness varies depending on the location of the skin. PeopleImages / Getty Images Roles It Plays The dermis is the thickest layer of skin and arguably the most important. Aging Process Many people wonder about what causes the skin to wrinkle and age....

The nasal bones are two wedged-shaped bones that make up the bridge of your nose. They come together at a rigid fibrous joint, forming the thickest part of the nose. Anatomy The anatomical parts of the nose are fairly the same from person to person. SCIENCE PHOTO LIBRARY / Getty Images Most injuries are minor and occur related to: Can a Baby Be Born Without Nasal Bones? If you sustain a nasal injury, it is best to be examined by a healthcare provider....

Brain Area Controls Timing of Sleep, Wakefulness, Temperature What is the suprachiasmatic nucleus (SCN)? Discover what happens if the SCN becomes damaged and what other signals may become important. A Word on Circadian Rhythms There are multiple internal processes that are externally influenced by our environment. Hero Images / Getty Images The termcircadiandescribes the approximately 24-hour cycles that are generated independently of these external influences. What Is the Suprachiasmatic Nucleus of the Brain’s Hypothalamus?...

Back muscles are grouped into three categories. They can examine you and determine the best course of treatment for your back problem. The Superficial Layer The superficial layer of back muscles lies just below your skin andfascia. Many of these muscles are easily identified and located simply by looking at andpalpating your body. These muscles course from your vertebral column to yourribsand assist yourdiaphragmand intercostal muscles in moving the ribs during breathing....

Long bones have two main parts. The diaphysis is the central part of the bone and the epiphysis is the rounded end of the bone. What is the difference between your clavicle and collarbone? There is no difference between the clavicle and collarbone. These two words describe the same bone. Clavicle Bone Function The clavicle connects the shoulder to the rest of the skeleton. The subclavius, which means beneath the clavicle, is the primary muscle that controls the clavicle....

The other part of cranial nerve VIII, called the vestibular nerve, helps with balance. Rarely, people are born without a cochlear nerve or with a shortened one. About 20% of hearing loss in childhood involves a cochlear nerve deficiency. abstractdesignlabs / Getty Images The cochlear nerve is responsible for hearing. The vestibular nerve is responsible for balance, motion, and position. The cochlea houses the cell bodies of the cochlear nerve within a region called the spiral ganglion....

Its one of three branches coming off the celiac trunk. The celiac trunk is a major artery and the first branch of theabdominal aorta. The other celiac trunk branches include the splenic artery and the left gastric artery. Stocktrek Images / Getty Images The lesser omentum is connected to both the stomach and liver. The continuation of the common hepatic artery is the proper hepatic artery. Collagen fibers (connective tissue made of protein) make up the outer layer of arteries....

The shoulder joint is the articulation between the thorax and the arm. The glenoid fossa is covered with a smooth cartilage called the labrum. Shoulder Muscles There are 17 muscles that cross the shoulder joint. Verywell / Alexandra Gordon Theperiscapularmuscles help to control the movements of the shoulder blade. This movement is critical to normal shoulder function. The muscles of the rotator cuff are the supraspinatus, infraspinatus, teres minor, and subscapularis....