• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
A1990CP63600001
A1990CP63600001

... horseradish peroxidase. Intrigued by the ohservations of Kuypers and Maisky, Arthur cut and stained sections through the hypothalamus in a few animals. One day he called me into his office to help him identify the hypothalamic cell group that was retrogradely labeled. As soon as I looked through the ...
Unit 2: Nervous System
Unit 2: Nervous System

... • Spinal cord = communication highway • All nerves communicate through Spine ...
WELCH Notes Chapter 12
WELCH Notes Chapter 12

... 1. The brain and spinal cord begin as the neural tube, which rapidly differentiates into the CNS. 2. The neural tube develops constrictions that divide the three primary brain vesicles: the prosencephalon (forebrain), mesencephalon (midbrain), and rhombencephalon (hindbrain). Secondary brain vesicle ...
C8003 Psychobiology sample paper 2016-17
C8003 Psychobiology sample paper 2016-17

... decrease heart rate when activated Parasympathetic nerves from the hindbrain innervate the heart and increase heartrate when activated The autonomic nervous system is composed of sympathetic and parasympathetic components Sympathetic nerves form ganglia outside the spinal cord, innervate the heart a ...
DISSECTION OF THE SHEEP BRAIN DAY 1 Includes Part 1 – Part 3
DISSECTION OF THE SHEEP BRAIN DAY 1 Includes Part 1 – Part 3

... Day 4 Includes Part 5 – Part 7 PART 5: DIENCEPHALON As you locate these structures, review their functions as well. Identify the structures in bold: 1. Looking on the inside of the brain, identify the thalamus, which forms the walls of the third ventricle and is located posterior and ventral to the ...
Nervous and Endocrine System
Nervous and Endocrine System

... • At the end of class you should be able to: – Understand the various parts of the nervous system and explain their functions. – Understand how the hormones of the endocrine system differ from the nervous system? ...
Development of the Brain
Development of the Brain

... neurons after damage to other neurons. • Because activity in one area stimulates other areas, damage to the brain disrupts patterns of normal stimulation. • Use of drugs to stimulate activity in healthy regions of the brain after a stroke may be a mechanism of later recovery. ...
Notes - Pierce College
Notes - Pierce College

... BRAIN (CNS) ANATOMY: WHITE & GREY MATTER ...
Addiction - Biological, Not Sociological
Addiction - Biological, Not Sociological

... person who starts drinking at age 13 has a 43% chance of becoming an alcoholic. Whereas, person who starts drinking at age 21 has a 10% chance of becoming an alcoholic. ...
Slide 1
Slide 1

... • Once called the rhinencephalon, or “smell brain,” because it deals with olfaction. • There are few synaptic connections between the limbic system and the cerebral cortex, which is why it is hard to control your emotions. ...
Neuron
Neuron

... of a hose, from which water is squirted. Synapse is like a railroad junction, where two trains may meet. ...
The Nervous System Chapter 8
The Nervous System Chapter 8

... brain with creation of dural sinuses between layers;  1 layer around spinal cord with epidural space external ...
Nervous Systems II PPT
Nervous Systems II PPT

... Combining axons of varying diameters allows the giant squid to have near simultaneous contraction of its mantel, due to its ability to speed up transmission to its farthest parts from the CNS. ...
11-Jun-15 1 - Winston Knoll Collegiate
11-Jun-15 1 - Winston Knoll Collegiate

... cord; controls involuntary functions like breathing, heart rate, blood pressure, etc. etc. ...
RFC_Cp_C_Wyart_def_EUK-v
RFC_Cp_C_Wyart_def_EUK-v

... team studies motor activity in the zebrafish. This transparent vertebrate species is particularly suited to optogenetics, an innovative technology that allows stimulation of target neurons using light. In this method, the stimulated neurons light up and are visible in the transparent animal. The res ...
fleming_Oct
fleming_Oct

... neuron, or nerve cell, showing several of its important features. The right foreground shows a nerve cell fiber in cross section, and the upper left inset gives a more realistic picture of the shape of neurons. The nerve impulse usually travels from the dendrites and soma to the branching ends of th ...
Your Amazing Brain:
Your Amazing Brain:

...  Your brain makes up about 2% of body weight yet takes 20% of the body’s blood supply  Brain does not fully mature until age 25-30 years ...
Unit 8 - Perry Local Schools
Unit 8 - Perry Local Schools

... • Interneurons work together to perform a common function • Working together results in facilitation • General excitation that makes stimulation easier to achieve ...
The Nervous System
The Nervous System

...  The biological clock is the internal timekeeper.  The clock’s rhythm usually does not exactly match environmental events.  Experiments in which humans have been deprived of external cues have shown that biological clock has a period of about 25 hours. ...
I. Organization and Functions of the Nervous System
I. Organization and Functions of the Nervous System

... Which of the following statements concerning the medulla oblongata is false? (a) It contains the fourth ventricle. (b) It is a cardiac center in conjunction with the hypothalamus. (c) It is located within the myelencephalon. (d) It secretes hormones along with the pituitary gland. (e) It is a respir ...
Peripheral Nervous System
Peripheral Nervous System

... There is only one axon attached to each neuron. Both axons and dendrites are called nerve fibers. Nerve fibers are wrapped together like a rope that is made of many thin strings and covered in connective tissue and called a nerve. ...
Autobiography for 2016 Kavli Prize in Neuroscience Carla J. Shatz
Autobiography for 2016 Kavli Prize in Neuroscience Carla J. Shatz

... binocular vision, which resulted in the Nobel Prize in Physiology or Medicine in 1981, revealed brain circuits of almost crystalline- like perfection. Every day as a student I watched the beauty of visual system organization unfold before my eyes. I thought, “all research must be like this”! Of cou ...
Chapter 12 Nervous Tissue
Chapter 12 Nervous Tissue

... causes massive activation of parasympathetic division loss of control over urination and defecation ...
The Nervous System_8C - Science and Math with Mrs. Jessome
The Nervous System_8C - Science and Math with Mrs. Jessome

... The Nervous System is important for a few reasons. It can protect the body from harm, keeps us breathing, allows us to learn (reading, writing, math, etc), controls movement and growth, and feel emotions. ...
Chemistry of Psychology - Point Loma High School
Chemistry of Psychology - Point Loma High School

...  Used by more neurons than any other  Lots in Cerebral Cortex and Hippocampus  Too much Glutamate = causes neurons to die  Plays a role in allowing and supporting synaptic connections allows messages to cross synapse efficiently  Important for learning & memory (p98) Peptides= Endorphins  Hund ...
< 1 ... 118 119 120 121 122 123 124 125 126 ... 246 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report