Essays on Chemoreceptor

Efficacy of Ondansetron in oral rehydration

Introduction Ondansetron is a drug that blocks actions of chemicals within the body that can trigger an episode of vomiting or diarrhea (Freedman, 2016). The body has a system of regulating itself and fighting any harmful condition or substance. The medulla oblongata is responsible for the regulation of involuntary actions such as breathing, vomiting, thirst and heart rate. This part of the brain can detect various chemicals and hormones within the blood. When a potentially toxic substance gets detected, the chemoreceptor trigger zone initiates the vomiting process. Ondansetron prevents nausea and vomiting caused by surgical activities or cancer medication. ...

Patient Situation and Literature Review

Patients receiving chemotherapy treatment for cancer experience a great deal of extremely unpleasant and severe side effects. These include immunosuppression, anemia, thrombocytopenia, gastrointestinal symptoms, peripheral neuropathy, alopecia and fatigue (Chemotherapy side effects, n.d.). Effectively managing these symptoms increases patient quality of life despite serious and potentially terminal illness and promotes compliance with treatment in order to optimize the benefits (Perwitasari et al., 2012). Nausea and vomiting are particularly distressing symptoms among patients and nurses working in the oncology ward must be knowledgeable regarding the range of pharmacologic and nonpharmacologic techniques which can be used for control. This paper presents the ...

Introduction to Physiology: Respiration

There are a lot of factors that determine the rate and depth of human respiration. Some of the factors are influenced by the conscious control part of the brain while others are not. Different organ system functions leads to unique pattern of respiration and even though respiration is controlled by the autonomous nervous system, people play a part in the control of breathing. Respiration is affected by certain chemicals which include oxygen, carbon dioxide, acid, epinephrine and acetylcholine (Marieb e.tal 2010).

Whether or not oxygen concentration affects respiration remain a debating topic in the scientific realm. This is because the human body ...