Homeostasis & Homeostatic Imbalances Deborah Curry Kaplan University Positive & Negative feedback systems Positive feedback system: Strengthens or reinforces a change in one of the body’s controlled conditions. (Tortora & Derrickson‚ 2014‚ p. 10) Negative feedback system: Reverses a change in a controlled condition in the body. (Tortora & Derrickson‚ 2014‚ p. 10) Homeostasis & Homeostatic Imbalances of the Endocrine System The endocrine system makes hormones responsible
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responsible for behavior and mental life of an individual. The forebrain has division‚ the diencephalon and telencephalon or cerebrum. Diencephalon has two parts the thalamus and hypothalamus. Thalamus is responsible for translating incoming messages from the sensory receptor except for the sense of smell. While hypothalamus is the center of the brain that govern our hunger‚ thirst and sexual
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1) Expectancy about one’s chances of attaining the incentive 2) The value of the desired incentive. -Evolutionary theories argues that natural selection favours behaviours that maximize reproductive success The Motivation of Hunger and Eating -Hypothalamus is the part of the brain that controls hunger and the motivation to eat. - Neuropeptide Y and serotonin are neurotransmitters -Glucose is a simple sugar that is an important source of energy -Manipulations that decrease blood glucose level can
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B) decreased release of thyroid-stimulating hormone from the anterior pituitary. C) increased secretion of thyrotropin-releasing hormone from the hypothalamus. D) inhibition of parathyroid hormone release from the parathyroid glands. 2. Growth hormone is secreted into the bloodstream by the A) anterior pituitary. B) posterior pituitary. C) hypothalamus. D) thymus. 3. A patient has syndrome of inappropriate antidiuretic hormone (SIADH) secretion. Which primary action will the nurse expect to
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Introduction Anorexia Nervosa is an eating disorder and mental health condition. It means loss of appetite due to nerves. It involves lowering food intake‚ over exercising and can be life threatening. People suffering from anorexia may have distorted images of themselves‚ leading them to believe they’re overweight when they’re not. Often people suffering with the disorder attempt to hide their behaviour from the people close to them by lying about their eating patterns. Anorexia is characterised
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Introduction To Central Nervous System Neuropharmacology SPH 3014 Introduction to CNS • CNS is composed of brain and spinal cord. • Primary function are to coordinate and control the activity of other body systems. • Involved the synaptic processes which release different kind of neurotransmitters – Ach‚ NE‚ Serotonin‚ Dopamine etc – Some mental illnesses & pathological conditions are associated with abnormal changes in the amount or activity of neurotransmitter – Many drugs that
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Central sulcus | H. Medulla oblongata | B. Cerebral Cortex | I. Midbrain | C. Convolution (gyrus) | J. Optic Chiasma | D. Corpus callosum | K. Pineal gland | E. Falx cerebelli | L. Pons | F. Hypothalamus | M. Tentorium cerebella | G. Insula | N. Diencephalon | 1. Structure formed by the crossing-over of the optic nerves ___J__ 2. Part of the diencephalon that forms lower walls and floor of third ventricle _F_ 3. Cone-shaped
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able to survive because of the brain’s activity it made the time run slower to cope up with the situation. As the lead of the team heard of the warning his brain took control. Two parts of the brain were responsible‚ diencephalon: thalamus and hypothalamus‚ they manage the fight or flight response hardwired. This drives a person to do an action without even thinking. The control center collects information from the situation outside. Usually‚ the data goes directly to the brain starts center here
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cycle? a. menstrual‚ ovulation‚ and luteal b. follicular‚ luteal‚ and secretory c. menstrual‚ proliferative‚ and secretory d. follicular‚ ovulation‚ and luteal e. proliferative‚ luteal‚ and ovulation 14. Inhibition of the release of GnRH from the hypothalamus will a. stimulate production of estrogen and progesterone. b. initiate ovulation. c. inhibit secretion of gonadotropins from the pituitary.
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volume loss such as from slow dehydration over a period of time‚ massive vasodilation or rapid haemorrhage. The second natural stimuli is an increase in plasma osmotic pressure. Loss of cell water is detected by osmoreceptors‚ located mainly in the hypothalamus‚ and their stimulation gives rise to thirst. Hypovolemia is detected by vascular stretch receptors which are found in the walls of heart and vasculature (Gauer & Henry‚ 1963). During hypovolemia‚ angiotensin II levels in plasma increase due to
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