| ADH regulates water retention in the kidneys, reduces urine volume, and helps prevent dehydration. Also a brain neurotransmitter.…
and gives rise to sensations of early fullness. This suppresses the urge to eat which…
Water imbalance, in which output exceeds intake, causing an imbalance in body fluids, is termed dehydration. True…
One way in which eating behaviour is controlled is by a process called homeostasis. This involves mechanisms which both detect the state of the internal environment and also correct the situation to restore that environment to its optimal state. The body has evolved two separate systems, one for turning eating on and another for turning it off. Glucose levels play an important role in producing feelings of hunger. When there is a decrease in blood glucose, this increases the feeling of hunger which is activated by the lateral hypothalamus in the brain. This contains a neurotransmitter called the neuropeptide Y which causes the individual to consume food, therefore resulting in the glucose levels to rise again. This rise in glucose levels activates the ventromedial hypothalamus which leads to feelings of satiation. The ventromedial hypothalamus contains an area called the paraventricular nucleus which is believed to cause a condition called hyperphagia (over eating). This is turn inhibits further consumption until the blood glucose levels have decreased again.…
5) cells in the brain sense an increase in the concentration of the blood plasma. They then notify the pituitary gland to release the hormone, ADH. This hormone causes the kidney to save water, which lowers the concentration of the plasma. ALL of the following are TRUE for this scenario EXCEPT:…
d. Describe the collecting duct role relative to urine concentration. Depending on the body fluid osmolarity, the collecting duct reabsorbs water & forms concentrated urine or if water is allowed to pass, dilute urine is formed.…
b) What are the different forms of water gain and water loss in the body?. What are the disorders of water balance.…
This patient suffering from a sudden urge to drink fluids as well as excessive urination is a sign of polydipsia. What polydipsia means is excessive thirst and a way one may have this condition is to have diabetes mellitus, which means there is an excessive amount of glucose in a persons blood which travels in the bloodstream and increases the symptoms that this patient is experiences ("Polydipsia," 2008). In this case, the patient needs to be seen right away to be evaluated by their physician.…
The human body is about 60% water. You r body loses water by perspiration. When you exhale, you lose water as water vapor. Then, your nerves send a signal to your brain for water. This is why you feel thirsty. U.S.D.A Food PyramidThis is a picture of U.S.D.A.’s Food Pyramid. U.S.D.A. created this pyramid to help people eat the right kinds of food, keep a balanced diet, and stay healthy.Click here to visit the website about U.S.D.A.’s Food Pyramid!…
She feels very thirsty despite drinking lots of water. This is a common symptom of diabetes, another term for this is polydipsia. Roberta feels very…
The first thing I noticed once I drank more water was a constantly full bladder. It felt like a burden to have to run to the restroom every half an hour. But on the other hand, it was a signal to me that my body was hydrated and nourished, which made me happy and glad that I’m drinking water.…
Symptoms of hyponatremia (sodium deficiency) are commonly linked to the excess water retention it causes. This occurs as there are not enough electrolytes left to balance the cellular system. Organ failure and adverse side-effects from medication are common causes.…
However, don’t stay away from drinking water even if your’e thirsty, as it is the best time to drink water. Stay atuned to the signal your body is sending to prevent such disastrous…
Dehydration - You may be dehydrated before you first experience thirst. Beverages that contain caffeine produce a diuretic effect on the body. Exercise uses lots of water; moreover, even digesting your meal requires a lot of water. Your brain is the biggest user of water and it has the capacity of removing water from the heart if it becomes low.…
Hunger is one of the three most significant motivators a person experiences. It is a major concept in our everyday lives that influences behaviours we gravitate to ourselves. What drives this motivator? What are the mechanics and processes involved with feelings of hunger and fullness? For a better understanding starting from the biological aspects that soon combine with social aspects will develop a thorough sense of how hunger operates. A reliable process to accurately indicate true hunger is by the use of the blood glucose level. Levels are monitored through glucoreceptor cells in the brain and liver, of which we are not aware of our levels and is a good thing. It is not an ideal behaviour to constantly think about your blood glucose level every day of every minute. In addition to monitoring our glucose levels, the brain also monitors other factors such as hormone levels that operate the hunger mechanics. There are four hormones associated with hunger: cholecystokinin, leptin, glucocorticoids, and ghrelin. Cholecystokinin and leptin reduce the appetite when its levels are increased. In contrast, glucocorticoids and ghrelin enhance the appetite when increased in the body. A special tool of the brain is used in detecting the levels of the hormones to initiate the feeling of hunger or fullness. This tool is called the hypothalamus which used key areas to function the hunger mechanic. It also interacts with another part of the brain called the hippocampus in the experience of hunger and fullness. The lateral hypothalamus when stimulated will increase appetite but reduce it if it has sustained damage. The ventro-medial hypothalamus operates in the opposite way as it reduces appetite if stimulated but increases it if damaged. Specific types of hunger or “cravings” as one would call it are controlled by the paraventricular nucleus part of the hypothalamus. With this information, could we not develop ways to mold people’s appetites and over eating? Some would…