Hypothalamus:-
A part of lover middle brain that control and the pituitary gland to release hormone. It influences part of brain that controls hormone production by releasing different chemicals to the pituitary gland.
A good nights sleep is vital to a healthy lifestyle, however interruptions throughout the night can cause serious consequences to mental and physical health. Homeostasis is defined as maintaining a relatively constant internal environment. Multiple functions to maintain homeostasis of the human body are carried out through the recommend ninterrupted eight hours of sleep for an adult. One of the functions is a reduction of blood pressure[1]. However there is common sleep disorder which repeated involuntarily interrupts the sleep cycle.…
In chapter 13 the key points of focus are stress, health and coping. As defined by the cognitive appraisal model, stress is a negative emotional state that is in occurrence to events that are seen as appraised as taxing or exceeding one's resources. Psychologists that study stress and other psychological factors that influence health, illness and treatment are health psychologist. Events or situations that produce stress are known as stressors. Significant sources of stress include daily hassles, work stress and burnout.…
This system is known to be one of the longest systems of hormones, as it was discovered about 100 years ago. Renin is an enzyme protein in nature that flows through the kidneys while angiotensin is a hormone that circulates in the bloodstream and constricts the blood vessels. By causing a restriction in the blood vessels, this hormone can increase the blood pressure which ultimately overworks the heart and body (Sahay, & Sahay, 2012). Aldosterone is a hormone produced by the adrenal cortex, this hormone helps in regulating the blood pressure. Whenever there is a decrease in blood flow to the kidneys, this system is activated.…
5.Genitalia: promotes erection of genitals, promotes ejaculation and vaginal contractions. In times of stress, how do the endocrine and autonomic nervous systems work together? Provide a real life example of how these systems would have become activated and walk me through what you…
This is a network of nerve pathways which run from lower parts of the brain to other organs. The ANS is predominantly controlled by the hypothalamus and is supposed to help regulate normal bodily functions. This activation of the sympathetic branch then stimulates the adrenal medulla. This is located on the adrenal gland’s inner core. This causes it to release the hormones adrenaline and noradrenaline.…
Angiotensin II, as a strong vasoconstrictor, increases blood pressure by stimulating the systemic vascular resistance and the raise of the blood volume, therefore the blood pressure too. Angiotensin II also stimulates the production of aldestorne by the adrenal cortex. Aldosterone provoke kidneys to reabsorp more sodium ions and water. Due to the sympathetic stimulation,the adrenal medulla secretes epinephrine and norepinephrine,which raise the heart rate and respectively,the cardiac…
The hypothalamus regulates body temperature, thirst, hunger, sleeping, and waking, sexual activity, and emotions. After I have played cards with my friend for a while I will begin to get hungry and thirsty and crave for food. Therefore, I get some slices of pizza in order to control my hunger and maintain homeostasis, the tendency of the body to maintain a steady…
It is responsible for flight or fight response. The Autonomic Nervous System also influences metabolism and thermal regulation. There are three main parts of the Autonomic Nervous System: the sympathetic nervous system, enteric nervous system, and parasympathetic nervous system. Ganglions are components of the autonomic nervous system and therefore has preganglionic and postganglionic fibers. Sympathetic Nervous System has thoracombular outflow.…
Epinephrine or more commonly known as adrenaline is a hormone and a drug that is used as medication for some conditions such as anaphylaxis and cardiac arrest. It is naturally produced by the adrenal glands. Strong emotions such as fear or anger will trigger epinephrine to be released into the blood stream. No other drug out there acts on so many systems and tissues and that is why it is so commonly used to treat anaphylaxis. Epinephrine is injected into a muscle or is given through an IV.…
Heart failure results in low cardiac output and inadequate filling of the arteries which causes the heart to be unable to pump enough blood to meet with tissue demand of oxygen and nutrients. Consequently, the neurohormonal system activates several feedback mechanisms. The baroreceptors in the aortic arch and carotid sinus that normally inhibit sympathetic nervous system activity are blunted in the patient who is experiencing heart failure. This results in high levels of circulating catecholamine (epinephrine, norepinephrine, and dopamine). In addition, the circulating catecholamine increase force of myocardial contractility, as does the increased activity of the sympathetic nervous system.…
Movement helps in all of our organ systems. This paper specifically focuses on oscillations in the neuroendocrine system, which includes the hypothalamic-pituitary-adrenal (HPA) axis. The hypothalamic-pituitary-adrenal (HPA) axis is a set of direct influences and feedback interactions among three endocrine glands: the hypothalamus, the pituitary gland and the adrenal…
The hypothalamus (control center) recognizes a threat (stimulus) or type of danger by receiving a message visually or audibly (receptors) from the amygdala and notifies two systems, the sympathetic nervous system and the adrenal-cortical system (effectors) to kick into gear and go into protection mode. The sympathetic nervous system speeds up the body by tensing up and becoming very alert along with sending impulses to glands and smooth muscles. It will also inform the adrenal medulla to release epinephrine, which is adrenaline into the bloodstream. At the same time, the hypothalamus also releases corticotrophins into the pituitary gland, which then activates the adrenal-cortical system. From there, the hormone moves through the bloodstream…
The pituitary gland is a ductless endocrine gland that is split into two main parts: the anterior pituitary gland and the posterior pituitary gland. The pituitary gland is often referred to as the "master gland" because it produces hormones that control the rest of the endocrine system, such as the "thyroid gland, adrenal glands, ovaries, and testes" (endocrineweb.com). The pituitary gland itself is found behind the nose and at bass of the brain (patient.info). The posterior pituitary is the smaller, posterior lobe of the pituitary gland, and it is located inferior to the hypothalamus, the portion of the brain that maintains homeostasis, and it is also located posterior to the anterior pituitary gland. Furthermore, the posterior pituitary is…
In the brain, there are many factors that are involved when working with the emotional chemistry that is undergone in the minds of people daily. The brain relies on electrical impulses and chemical signals that carry messages across different parts of the brain and throughout the nervous system. People rely on chemical signals control how they talk, eat, walk and do basic human characteristics but in an even deeper level they decipher the thought process behind those actions and inactions humans do. There are four different areas that control our brains and the way we think about brains. The four regions are the Amygdala Prefrontal cortex (PFC), Anterior cingulate cortex (ACC) and the Hippocampus.…
11 Reasons Coffee Is Bad For Your Health Coffee – tasty cup of joy that is consumed by millions of people each day. But not many of us know how coffee actually affects the organism, especially when consumed in a large amount on a daily basis. Studies have shown the benefits that a person can enjoy from drinking coffee. That includes reduced risk of developing Parkinson’s disease, kidney stones, Type II Diabetes, protection from Alzheimer Disease and Dementia. But, remember, only by drinking fresh, high – quality and ideally organic coffee.…