Physiology Exercise 3 Activity 1 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. Your answer: By increasing the extrecellular K+ the net diffiusion of K+ out the neuron through the eak channels is reduced. This is caused by the flow of ions following the concentration gradient of traveling from an area of high concentration to areas of low concentration. The higher concentration gradient would result in a reduced diffusions
Premium Action potential
hypothesis states that schizophrenic’s neurones transmitting dopamine release the neurotransmitter too easily‚ leading to the characteristic symptoms of schizophrenia. This hypothesis claims that schizophrenics have abnormally high amounts of D2 receptors; receptors that receive dopamine‚ therefore resulting in a higher amount of D2 receptors binding to the receptors causing more impulses. Dopamine neurotransmitters play a key role in guiding attention‚ so an imbalance of this neuron leads to problems
Premium Schizophrenia Psychosis Mental disorder
The term “bio” means life and “logos” means study. The word biology can thus be defined as the study of life. The study of physiological bases of behavior is known as Biological psychology. Biological psychology is the study in three ways namely the comparative method‚ Physiology and Investigation of inheritance. In the comparative method a number of different species are studied and then the results are compared and are related in order to understand the human behavior. Physiology basically focuses
Premium Dopamine
and hoping the next will bring a stable supply of neurotransmitters like serotonin or dopamine. These chemicals in the brain‚ when in excess or in insufficient amount‚ cause depression. As a person with dysthymia (Eeyore Depression)‚ everyday life is a challenge; simple tasks become strenuous‚ thoughts become askew from random triggers‚ and being understood by others is a rarity. Since
Premium Suicide Major depressive disorder Bipolar disorder
stimulate the release of neurotransmitters. These are chemical messengers that carry a message from the sending neuron across a synapse to receptor sites on a receiving neuron. The sending neuron‚ in a process called reuptake‚ then normally reavsorbs the excess neurotransmitter molecules in the synaptic gap. If incoming signals are strong enough‚ the receiving neuron generates its own action potential and relays the message to other cells. 2-4: How do neurotransmitters influence behavior‚ and
Premium Neuron Nervous system Brain
The brain‚ which weighs only three pounds and is made up of eighty percent water‚ is the key organ of our nervous system. It is divided into three different parts: the Cerebrum‚ the Cerebellum‚ and the Medulla Oblongata. The "gray matter" of the brain is about one-eighth inch thick and it gives the brain its gray color. Inside the brain is the cortex‚ which is made up of billions of neurons. These neurons extend into the cerebral hemisphere and it controls all mental activity. In this report I will
Premium Attention-deficit hyperactivity disorder Dopamine
Observing the neuron up close‚ one would see they are basically ions‚ “sodium and calcium”‚ they pass through a channel and work as neurotransmitters that bind to a receptor that let the cell know whether to open up the ion channels to relay the message called “Exhibitory Neurotransmitters” or vice versa to close the channel called an “Inhibitory Neurotransmitter” (Wanpracha‚ 2008). During an epileptic seizure the neurons become impaired and begin sending out Exhibitory signals over and over‚ it’s
Premium Neurology Epilepsy Seizure
Done By: Tan Shu Yi Clarissa S4 Amber Bio Essay: Treatments of neurological disorders (Huntington’s Chorea) In the world we live in‚ we are vulnerable to any number of neurological disorders. One such disease is Huntington’s Chorea. Progressive and degenerative‚ Huntington’s causes the one’s nerve cells in the brain to waste away. This causes personality changes such as depression and anger‚ decrease of cognitive abilities such as learning new information‚ involuntary facial movements and
Premium Huntington's disease Dopamine Neuron
PS101 Take home exam Secret life of the brain 7 November 2013 The Baby’s Brain: Wider Than The Sky Explain migrations-how millions of neurons travel in waves and follow cues along the way telling them exactly where to go? Neurons travel everyday in millions to carry out different task. It’s fascinating how they travel as if they are traveling across the country. They’re following cues along the way that are telling them exactly where to go. Evidence shows that young neurons have an idea
Premium Cerebral cortex Hippocampus Brain
References: Mayo Clinic. (2012). Symptoms. Retrieved from http://http://www.mayoclinic.com/health/bipolar-disorder/ds00356/dsection=symptoms Munson‚ L. (2012). Neurotransmitters and bipolar disorder. Retrieved from http://http://www.ehow.com/facts_5047910_neurotransmitters-bipolar-disorder.html NIMH. (2012). Bipolar disorder. Retrieved from http://http://www.nimh.nih.gov/health/publications/bipolar-disorder/how-is-bipolar-disorder-treated
Premium Bipolar disorder