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Anatomy of the Nervous System
Anatomy of the Nervous System

... and ventral point in the same direction for the head as they do for the rest of the body. However, human’s upright position has tilted the head relative to the spinal cord, so the dorsal and ventral directions of the head are not parallel to the dorsal and ventral directions of the spinal cord. ...
01-introduction of
01-introduction of

... The first motor neuron is in  the brain or spinal cord. Its axon (Preganglionic)  synapse with the second motor neuron (outside ) the CNS. The axon of this neuron is  (Postganglionic) extends to the organ which it serves. ...
Disorders of the Nervous System
Disorders of the Nervous System

... 1. frontal lobe – voluntary muscle movement and speech 2. parietal lobe – touch, pain, temperature 3. temporal lobe (or auditory) – interpreting sounds 4. occipital lobe (or visual) – interpreting sights The brain contains areas of tissue; the internal tissue is called white matter, and the outer la ...
Objective 1 | Explain why psychologists are concerned with human
Objective 1 | Explain why psychologists are concerned with human

... circulation, information processing). At the social-cultural level, people live in specific times and places and are subject to specific environmental and social-cultural influences. At the psychological level, people’s thoughts and emotions interact with their biology and personal history to produc ...
No Slide Title
No Slide Title

... All the nerves that control skeletal muscles, joints, and skin. They receive and act on external stimuli are called ________ nerves. ...
Brain and Consciousness - Oakton Community College
Brain and Consciousness - Oakton Community College

... highly active neurons The more neurons are exercised, the thicker the myelin tissue becomes. The thicker the myelin tissue, the faster the electric impulse can travel through the axon, up to 200 miles per hour. ...
General PLTW Document
General PLTW Document

... Activity 8.2.4 Brain Anatomy Introduction The brain is a complex organ composed of lobes, ventricles, and systems that are organized into specialized regions. These regions are responsible for functions such as speech, emotion, and memory as well as vision, hearing, and taste. Other regions of the b ...
7-Sheep Brain
7-Sheep Brain

... The BRAIN STEM with the MEDULLA and PONS. These are tracts: the CORPUS CALLOSUM connects the left and right cerebral hemispheres so your right hand knows what the left hand is doing. The FORNIX (part of the limbic system) is another tract down to the MAMMILARY BODY. Fornix (“arch”). Fornicates means ...
session 33
session 33

... the brain stem. It merges into the spinal cord below without any obvious change in structure. Like the pons, the medulla is an important fiber tract area. The medulla also contains many nuclei that regulate vital visceral activities. It contains centers that control heart rate, blood pressure, breat ...
Brain Facts
Brain Facts

... ∙There are about 13,500,000 neurons in the human spinal cord. ∙The human spinal cord is 45 cm long in men and 43 cm long in women. ∙There are 1,000 to 10,000 synapses for a "typical" neuron. ...
Ch 15 ppt
Ch 15 ppt

... Messages that must be widely broadcast through the brain use diffuse modulatory systems. The brain uses many of these mechanisms each requiring a specific neurotranmitter. Connections are widely dispersed throughout the brain. Modulatory system affect wide areas to make them more or less excitable o ...
File - Ms. Peele`s Science Site
File - Ms. Peele`s Science Site

... 9. The main control center of the nervous system that is protected by the skull. ________________. 10. The part of the brain that controls breathing, heartbeat, and other involuntary functions is called the ____________________________. 11. Neurons that serve as links between motor and sensory neuro ...
Unit 2 bio-behavior review guide
Unit 2 bio-behavior review guide

... Use your book to answer these questions. This will help be your study guide for your test. 1. The right hemisphere, in most people, is primarily responsible for a. counting b. sensation c. emotions d. speech 2. If a person's left hemisphere is dominant, they will probably be a. left-handed b. right- ...
Q: The cell bodies or sensory neurons are always found in a outside
Q: The cell bodies or sensory neurons are always found in a outside

... Q: The cell bodies or sensory neurons are always found in a ______________ outside of sensory neurons. A: A. Receptor B. Ganglion C. Nuclei D. Dendrite Q: How many hemispheres does the brain have? A: Two Q: What is the largest part of the brain? A: Cerebral hemisphere Q: Why doesn’t a person’s heart ...
File
File

... System • STRUCTURES: brain, spinal cord, & peripheral nerves • FUNCTION: Recognizes and coordinates the body’s response to changes in its internal and external environments ...
Slide ()
Slide ()

... Embryonic cranial nerve nuclei are organized segmentally. A. In the developing hindbrain (seen here from the ventral side) special and general visceral motor neurons form in each hindbrain segment (rhombomere) except rhombomere 1 (r1). Each special visceral motor nucleus comprises neurons in two rho ...
Scientific priorities for the BRAIN Initiative
Scientific priorities for the BRAIN Initiative

... studies of small animals such as worms, flies, fish and mice. Machine learning approaches have been successful in reducing multidimensional behavioral dynamics to specific behavioral rules that might be instantiated in brain circuits. For want of a better word, full ‘behavior-omes’ that describe tim ...
Review - TheThinkSpot
Review - TheThinkSpot

... • Neuron signaling is an all-or-nothing event. When the number of positive inputs exceeds a certain threshold, the neuron fires an action potential—an electrochemical signal that travels down the axon. In the synapse, neurotransmitters pass on information to the next neuron or gland. ...
Active Reading - Red Hook Central Schools
Active Reading - Red Hook Central Schools

... cerebellum, and the brain stem. Cerebrum: The cerebrum is the largest part of the brain. The capacity for learning, memory, perception, and intellectual functioning resides in the cerebrum. The cerebrum has a folded outer layer with many bumps and grooves. A long, deep groove down the center of the ...
BIOPSYCHOLOGY notes
BIOPSYCHOLOGY notes

... • Some hormones, like adrenaline, are chemically like neurotransmitters. Therefore, hormones & NTs function in very similar ways. • They differ in processing speed: NTs communicate very rapidly and hormones move much more slowly throughout the body. • But even though it takes longer for hormones to ...
Chapter 3 - Victoria College
Chapter 3 - Victoria College

... – concussion = abrupt (temporary) loss of consciousness associated w/ vision & equilibrium problems • caused by sudden blow to head • signs: vomiting, lack of concentration, confusion – contusion = bruising of brain due to trauma, includes leakage of blood from small vessels • usually associated w/ ...
File
File

... Form: The cerebellum is a large mass of tissue located below the occipital lobes of the cerebrum and posterior to the pons and medulla oblongata. It consists of two lateral hemispheres partially separated by a layer of dura mater (falx cerebelli) and connected in the midline by the a structure calle ...
The human brain - "G. Galilei" – Pescara
The human brain - "G. Galilei" – Pescara

... planning and coordinating of behaviour. ...
Distinction of a left or right hand keypress
Distinction of a left or right hand keypress

... The principal component analysis is computed for each channel, then the second principal mode is used (I have not used the first because it contains the normal activity of the brain instead the features to discriminate between left or rigth hand). This mode is correlated with the signals (only the s ...
Introductory Psychology
Introductory Psychology

... The intricate fabric of interconnected neural cells that covers the cerebral hemispheres. It is the body’s ultimate control and information processing center. ...
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Brain



The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. Only a few invertebrates such as sponges, jellyfish, adult sea squirts and starfish do not have a brain; diffuse or localised nerve nets are present instead. The brain is located in the head, usually close to the primary sensory organs for such senses as vision, hearing, balance, taste, and smell. The brain is the most complex organ in a vertebrate's body. In a typical human, the cerebral cortex (the largest part) is estimated to contain 15–33 billion neurons, each connected by synapses to several thousand other neurons. These neurons communicate with one another by means of long protoplasmic fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells.Physiologically, the function of the brain is to exert centralized control over the other organs of the body. The brain acts on the rest of the body both by generating patterns of muscle activity and by driving the secretion of chemicals called hormones. This centralized control allows rapid and coordinated responses to changes in the environment. Some basic types of responsiveness such as reflexes can be mediated by the spinal cord or peripheral ganglia, but sophisticated purposeful control of behavior based on complex sensory input requires the information integrating capabilities of a centralized brain.The operations of individual brain cells are now understood in considerable detail but the way they cooperate in ensembles of millions is yet to be solved. Recent models in modern neuroscience treat the brain as a biological computer, very different in mechanism from an electronic computer, but similar in the sense that it acquires information from the surrounding world, stores it, and processes it in a variety of ways, analogous to the central processing unit (CPU) in a computer.This article compares the properties of brains across the entire range of animal species, with the greatest attention to vertebrates. It deals with the human brain insofar as it shares the properties of other brains. The ways in which the human brain differs from other brains are covered in the human brain article. Several topics that might be covered here are instead covered there because much more can be said about them in a human context. The most important is brain disease and the effects of brain damage, covered in the human brain article because the most common diseases of the human brain either do not show up in other species, or else manifest themselves in different ways.
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