AS Psychology: Unit 2 PSYA2 (May exam) Biological Psychology – Stress Unit 2 Booklet 1 (of 2): Stress as a Bodily Response Stress First of all we need to answer the question- ‘What is stress? There is no single definition of stress. Any definition of stress must take into account the internal factors (physiological changes)‚ external factors (the situation itself) and
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sign of inflammation and fibrosis (Sunheimer & Graves‚ 2011‚ pg. 383). It usually can be see after recurring instances of acute pancreatitis and pancreatic cells are now scar tissue. Because of the damage that chronic pancreatitis results in‚ the endocrine and exocrine portions of the pancreas are completely destroyed. Alcohol abuse is the most common cause of chronic pancreatitis. Symptoms are constant abdominal pain but some do not experience pain at all. Patients have also been found to display
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The Biology of Mind Neuron Communication Neuron is a nerve cell‚ basic building block our nerve system Neurons consists in: Dendrites : neurons bushy branches and it listens Axons: Tube that passes the messages and it speaks – transmit Action potential : is a neural impulse‚ brief electrical charge that travels down an axon. Threshold: is the level of stimulation required to trigger a neural impulse Myelin Sheath covers an axon and some neurons Synapse : is the junction
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artery‚ artery of the inferior cavernous sinus[1] | Precursor | neural and oral ectoderm‚ including Rathke ’s pouch | MeSH | Pituitary+Gland | Dorlands/Elsevier | Pituitary gland | In vertebrate anatomy the pituitary gland‚ or hypophysis‚ is an endocrine gland about the size of a pea and weighing 0.5 grams (0.018 oz) in humans. It is not a part of the brain. It is a protrusion off the bottom of the hypothalamus at the base of the brain‚ and rests in a small‚ bony cavity (sella turcica) covered by
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also be applied to the study of transport mechanisms in living membrane-bounded cells. Also‚ understanding of which way substances will move passively through a deferentially permeable membrane depending on the concentration differences. We used PhysioEx software to examine diffusion. In these experiments we used different sized membranes as well as NaCl‚ urea‚ glucose‚ albumin‚ powdered charcoal‚ and KCl. The step by step process was used by the software so that we could see the different kinds
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The pancreas is an organ located in the abdomen. It plays an essential role in converting the food we eat into fuel for the body’s cells. The pancreas has two main functions: an exocrine function that helps in digestion and an endocrine function that regulates blood sugar. Basic Anatomy: The pancreas is located behind the stomach and is surrounded by other organs including the small intestine‚ liver‚ and spleen. It is about six inches long and is shaped like a flat pear. The wide part‚ called the
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In the following essay I will be looking at both sides of the debate of whether neuroscience replaced psychology in explaining behavior. To begin with we must firstly understand what exactly neuroscience is and what it entails. It is generally defined as the study of how the nervous system develops‚ its structure and the functions it carries out. Neuroscientists study the brain and how it impacts on human beings behavior and cognitive functions. The study also looks at what occurs when things don’t
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pyloric. The stomach differs from other portions of the digestive tract in that it has three muscle layers used to produce a turbulent action necessary for digestion. There are multiple cell types in the stomach lining including the mucus‚ parietal‚ endocrine‚ and chief cells. The principle function of the stomach is to mix the food with digestive enzymes creating a semi-fluid mixture known as chyme. The digestive secretions in the stomach include hydrochloric acid‚ pepsin‚ intrinsic factor‚ and
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Written Assignment 1 1) Identify the organs of the endocrine system‚ including their locations and structures. Hypothalamus: Is located below the thalamus just above the brainstem. Pituitary: Is location within the sella turcica which is a dip in the sphenoid bone. Structures are tropic hormone and neurohypophysis. Thyroid: A) Location: anteriorly‚ above the thyroid glad. B) Structures are the isthmus connecting the two lobe and thyroid follices and network of capillaries Adrenal:
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Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name: Jeffery Cook Lab Time/Date: 12pm 2/09/2015 Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. a. Two variables that affect the rate of diffusion are size and whether or not there is an electrical or concentration gradient. 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction
Free Diffusion Molecular diffusion Sodium chloride