network of neurons (nerve cells) that that sends information to the brain to be analyzed. Neurons live both in and outside the central nervous system. Understanding how the neurons work is vital to understanding the nervous system. Neurons The neuron has two important structures called the dendrite and axon‚ also called nerve fibers. The dendrites are like tentacles that sprout from the cell and the axon is one long extension of the cell. The dendrites receive signals from other neurons‚ while the
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including neurons and glial cells. Neurons are cells that send and receive electro-chemical signals to and from the brain and nervous system. There are about 100 billion neurons in the brain. There are many more glial cells; they provide support functions for the neurons‚ and are far more numerous than neurons. There are many type of neurons. They vary in size from 4 microns (.004 mm) to 100 microns (.1 mm) in diameter. Their length varies from a fraction of an inch to several feet. Neurons are nerve
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Athena Hung AP Psych Semester 1 Review 1/14/2014 I. Social Psychology Major Studies & Key People Asch Study Conformity Lie about length of line‚ see if victim agrees Milgram Obedience See if victim keeps agreeing to shock person in pain Zimbardo Prison Study Role playing The more one acts‚ the more real it becomes Group Processes Helping Behavior Altruism: unselfish regard for the welfare of others Kitty Genovese: “Thirty-Eight Who Saw Murder Didn’t Call the Police” Bystander effect:
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sporadic (SALS) forms. Because SOD1 is found in the intermembrane space of the mitochondria and mitochondrial swelling and vacuolization are signs of motor neuron death‚ it was theorized by Okado-Masumoto that the uptake of this mutated SOD1 caused the motor neuron death (Okado-Matsumoto 2002). ALS progresses inexorably‚ eventually effecting bulbar neurons and cranial never motor nuclei. Because of this patients that are near the final stages of this disease often need substantial medical care to live.
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are filled with cerebrospinal fluid 6 grey matter: brownish-grey nerve tissue consisting of mainly cell bodies within the brain and spinal cord 6 white matter: the white nerve tissue of the brain and spinal cord‚ consisting of mostly myelinated neurons. PNS 6 two parts: (1) autonomic nervous system: the part of the nervous system that relays information to the internal organs that are not under the conscious control of the individual. This system is made up of the sympathetic and the parasympathetic
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Muscles and glands Neurons communicate with other neurons and stimulate both ___ and ___. Synapses‚ cell bodies‚ dendrites Signals from other neurons are received at junctions called ___‚ located primarily on the ___ ___and ___‚ the receptive and integrative regions of the neuron. Axon hillock‚ action potential The area where the axon emerges from the soma (cell body) is called the ___ ___. This is also where the outgoing signal‚ called a/an ___ ___ is generated. Collaterals‚ terminals
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Writing Assignment #2 #1- Sleep deprivation is a common problem in modern society. Sleep plays a crucial role in optimal health and wellness throughout a person’s life. Getting a proper amount of sleep can help aid in mental and physical health. Sleep deprivation can occur from various causes. Often the stresses and vigor of daily life may intrude upon our ability to sleep well. In any case‚ sleep deprivation is not only detrimental to one’s well being‚ but it can also impair cognitive ability and
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a. gustatory c. kinesthetic b. olfactory d. visual 7. Hormones most closely related to stress are produced by the a. thyroid c. pineal b. parathyroid d. adrenals 8. The unit of structure and function of the human nervous system is the a. neuron c. axon b. nerve d. brain 9. Which of the following technologies enables psychologists to visualize brain functions? a. EEG & EKG c. EKG & PET b. PET & fMRI d. PET & CAT 10. The part of the brain most closely associated with regulation of
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1. Describe the structure of a neuron and explain the function of each of its major parts. A neuron is a cell that can transfer a stimulus to another cell and is the basic unit in the nervous system. The cell body of the neuron is what contains the nucleus and the other organelles. The nucleus is where the DNA is stored. Dendrites extend from the cell‚ as do axons. Dendrites receive any incoming input while axons release signals out of the neuron. 2. Explain the interaction between the central
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have direct effect on NS Synaptic transmission Started out neuron centric until about 10 years ago Basically looked at how drugs affect neurons and what role neurons play in behaviors How neurons were communicating with other neurons or other cells in body All drugs changed what was happening at synapse Either mimic transmission or enhance it or decrease it All focused on neurons and their communication Psychopharm Not just neurons involved in communication Glial cells‚ astrocytes (enveloping
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