Atrioventricular node

Typically; swelling of the lymph nodes in the neck, fever and infection, along with tiredness and fatigue, are some symptoms a person may experience with Chronic Lymphocytic Leukemia (Leukemia - National Cancer Institute. n.d.). In the early development stages of the disease, Chronic Lymphocytic…

An 85 year old male experienced muscle damage in the lower part of the heart because of blocked blood flow. As this happened he fell unconscious because the extra electrical pathways of his heart's chambers stimulated, causing a rapid abnormal heart rate and an insufficient blood supply to the brain. After placing sensors on his body to monitor his heart's electrical activity the healthcare provider established that the front of his heart experienced a blockage in the past. Both events were…

lymphoma cells are in one lymph node group, or in the abdominal cells. In stage one there may be little to no symptoms, so it may escape detections in its early stages (National, Browley). In stage II the lymphomas are in at least two lymph node groups, either above or below the diaphragm, or in one part of an organ and the lymph node(s) near that area. There are more apparent symptoms now (National, Browley). In the third stage of NHL the lymphoma is in the lymph nodes above and below the…

electrical impulses that travel down pathways through your heart. The normal sinus rhythm is initiated by the SA node also known as the sinoatrial node. It is also known as the hearts natural pacemaker due to the fact it beat 100 bpm. The electrical activity then spreads through the wall of the atria and as a result causes them to contract before it reaches the AV node. From there the AV node conducts electrical impulses from the atria to the ventricles while slowing down the electrical signal.…

Lymphoma is a type of cancer in the blood the presents itself the lymph system. With lymphoma, white blood cells become malignant and start to multiply and spread abnormally. There are two major types of lymphoma. The first is Hodgkin’s lymphoma and the other is non-Hodgkin’s lymphoma. There are few ways to treat lymphoma, and with these treatments, sometimes cure it. Hodgkin’s lymphoma is cancer of the lymphatic system, more commonly known as the immune system. When the cells in the lymphatic…

The lymphatic system consists of lymphatic capillaries and vessels, lymph nodes, the spleen, the thymus, the tonsils, and lymph itself. Some of the fluid that is deposited into the tissues from the blood is taken up by lymphatic capillaries where it becomes lymph. Lymphatic capillaries and vessels have valves that prevent back flow, ensuring one-way flow of lymphatic fluids. Lymphatic capillaries eventually converge to form lymphatic vessels, which are similar in comparison to veins. Lymphatic…

AIDS-related lymphoma is a broad term for a group of blood cancers that, as its name implies, affects AIDS patients. There are various types of non-Hodgkin lymphomas (NHLs) that this category encompasses, so it is not as clear-cut as one might imagine. AIDS-related lymphomas are very complex diseases with many factors to consider. It is important to understand the origin of AIDS-related lymphoma. According to the article “AIDS-Related Malignancies,” AIDS-related lymphoma is believed to be…

3. Explain the heart generates and conducts an electrical current. Page 388 The heart has its own built-in conduction system for generating action potentials spontaneously and coordinating contractions during the cardiac cycle. All the cardiac muscle fibers in each region of the heart are electrically linked together. The intercalated disks are connections that electrically join the muscle fibers of the heart into a single unit that can conduct electrical impulses through the entire wall of…

highly efficient organ and constantly works to keep our blood circulation going and ourselves alive. The high efficiency of the heart pumping system originates in a conductive system, which is linked to the Sinoatrial (S-A) and Atrioventricular (A-V) node. The Sinoatrial node, also known as the natural cardiac pacemaker, is located in the upper part of the right atrium and initiates the contractions of the cardiac muscle by producing special electrical impulses which act as an activation signal…

generated by a group of cells located in the upper chamber of the heart. This special pathway is as follow: the sinoatrial node, atrioventricular node, his-purkinje network. The impulse starts in a small bundle of specialized cell which is known as the sinoatrial node located in the right atrium. The sinoatrial node sets the rate and rhythm of the heartbeat. The atrioventricular node slows the electrical signal before it enters the ventricles. It is located in the center of the heart…