• 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
A1985AUW1100002
A1985AUW1100002

... thought that, memory aside, the hippocampus offered several advantages. It has a cellular architecture that is remarkably conserved throughout mammals, and the main cetts, catted the pyramidal cells, are clustered in a discrete layer, an easy target for microelectrodes. These cells send their axons ...
Nervous System II – Neurons
Nervous System II – Neurons

... Name: Date: ...
Control and Coordination
Control and Coordination

... Imagine yourself to be Galan, the Greek physiologist (A.D.129 - 200). One day a patient came to you and told that he had fallen from his chariot and had a blow in the neck. He complained of loss of feeling in the arm while still retaining normal muscular control of its moment. What questions would a ...
The Nervous System
The Nervous System

... conduction – myelinated or unmyelinated axons? 2. Which do you think would conduct an AP faster – an axon with a large diameter or an axon with a small diameter? The answer to #1 is a myelinated axon. If you can’t see why, then answer this question: could you move 100ft faster if you walked heel to ...
Neuroscience01_Introduction
Neuroscience01_Introduction

...  Commissure is a group of nerve fibers connecting one side of the ...
Nervous System
Nervous System

... Gray and white matter. 4. Electrical signals in neuron. Ion channels Resting membrane potential (RMP) Graded potential. Action potential. ...
Chapter 2
Chapter 2

... All-or-None Response: When the depolarizing current exceeds the threshold, a neuron will fire. If the depolarizing current fails to exceed the threshold, a neuron will not fire. Intensity of an action potential remains the same throughout the length of the axon. ...
File
File

... with each other and with muscle and gland cells they can coordinate, regulate, and integrate many body functions. The nervous tissue includes neurological cells. These cells support and bind components of nervous tissue, carry on phagocytosis, and help support nutrients to neurons by connecting them ...
The Nervous System - Appoquinimink High School
The Nervous System - Appoquinimink High School

... opening and allowing positive sodium into the cell. This makes it positive. And is called DEPOLARIZATION 2. Soon after potassium channels open and allow potassium in ions in again bringing the charge back to negative. This is called REPOLARIZATION ...
Nervous Regulation
Nervous Regulation

... These 2 systems are antagonistic. The autonomic nervous system is made entirely of ________________. Impulses in this system start in motor neurons in the ______________ __________. The axons of these nerves ________________________ _________________________________________________________. The axon ...
Unit 3 "Cliff Notes" Review
Unit 3 "Cliff Notes" Review

... The hypothalamus directs several maintenance activities like eating, drinking, body temperature, and control of emotions. It helps govern the endocrine system via the pituitary gland. Picture a HYPOdermic needle spraying two thirsty llamas with water to quench their thirst and cool them down. ...
Psychophysics ppt. - Ms. Engel @ South
Psychophysics ppt. - Ms. Engel @ South

... around to hear it, does it make a sound? ...
The Brain
The Brain

... control of the autonomic system. It maintains homeostasis by regulating such things as: 1. Hunger and body weight 2. Water and electrolytes through controlling thirst 3. Sleep and wakefulness 4. body temperature 5. blood pressure and heart rate 6. sexual response 7. secretion of hormones from the pi ...
Paper: A differentially amplified motion in the ear for near
Paper: A differentially amplified motion in the ear for near

... The experiment demonstrated that vibrations at the reticular lamina, where stereocilia reside, were enhanced, had different frequency dependence and a different timing from the commonly measured vibrations of the basilar membrane. However, the full resolution of this conundrum will probably require ...
Biology of the Mind Powerpoint
Biology of the Mind Powerpoint

... Structure of the Cortex Each brain hemisphere is divided into four lobes that are separated by prominent fissures. These lobes are the frontal lobe (forehead), parietal lobe (top to rear head), occipital lobe (back head) and temporal lobe (side of ...
Biology of Mind
Biology of Mind

... Structure of the Cortex Each brain hemisphere is divided into four lobes that are separated by prominent fissures. These lobes are the frontal lobe (forehead), parietal lobe (top to rear head), occipital lobe (back head) and temporal lobe (side of ...
brain and spinal cord
brain and spinal cord

... enough to the NT to mimic its effects on the receiving neuron. Morphine, for example mimics the actions of endorphins*. ...
Slide ()
Slide ()

... The medium spiny neurons in the striatum have extrinsic and intrinsic inputs. Glutamatergic inputs from the cerebral cortex and dopaminergic inputs from the substantia nigra pars compacta terminate on dendritic spines of medium spiny neurons. The reward-related dopaminergic inputs are thought to mod ...
Nervous System: Levels of Organization Review and
Nervous System: Levels of Organization Review and

... this unit. Could you demonstrate each of these objectives? If so, you will be ready for the assessment below. If not, consider reviewing content related to these objectives before attempting the assessment. ...
The Nervous System
The Nervous System

... Retrieved from http://iupucbio2.iupui.edu/ anatomy/images/Chapt13/FG13_10.jpg ...
Chapter 19 The Neurological System
Chapter 19 The Neurological System

... a. The midbrain is located at the very top of the brain stem and acts as a reflex center. Visual and auditory reflexes are integrated here. When you turn your head to locate a sound, you are using the midbrain. The ‘righting reflex’ or the ability to hold your head upright and maintain balance is al ...
Nervous Tissue
Nervous Tissue

... Neuroglia of the central nervous system (CNS). ...
Teacher Guide
Teacher Guide

... cell body - the bulbous part of the neuron, also called the soma, that contains the nucleus. Dendrites and axons are processes off of the cell body. cerebellum - the highly folded part of the central nervous system above or dorsal to the brainstem that helps control movement, balance, and muscle coo ...
Nervous System
Nervous System

... Neurons send signals to other cells through thin fibers called axons, which cause chemicals known as neurotransmitters to be released at junctions called synapses, the NIH noted. A synapse gives a command to the cell and the entire communication process typically takes only a fraction of a milliseco ...
Brain - People
Brain - People

... PSTHs of all area studied show different periods of increased or decreased activity spanning across the whole length of trial ...
< 1 ... 186 187 188 189 190 191 192 193 194 ... 274 >

Circumventricular organs

Circumventricular organs (CVOs) are structures in the brain that are characterized by their extensive vasculature and lack of a normal blood brain barrier (BBB). The CVOs allow for the linkage between the central nervous system and peripheral blood flow; additionally they are an integral part of neuroendocrine function. The lack of a blood brain barrier allows the CVOs to act as an alternative route for peptides and hormones in the neural tissue to the peripheral blood stream, while still protecting it from toxic substances. CVOs can be classified into (a) sensory and (b) secretory organs. The sensory organs include the area postrema (AP), the subfornical organ (SFO) and the vascular organ of lamina terminalis. They have the ability to sense plasma molecules and then pass that information into other regions of the brain. Through this, they provide direct information to the autonomic nervous system from the systemic circulation. The secretory organs include the subcommissural organ (SCO), the posterior pituitary, the pineal gland, the median eminence and the intermediate lobe of the pituitary gland. These organs are responsible for secreting hormones and glycoproteins into the peripheral vascular system using feedback from both the brain environment and external stimuli.All of the circumventricular organs, besides the SCO, contain extensive vasculature and fenestrated capillaries which leads to a ‘leaky’ BBB at the site of the organs. Furthermore, all CVOs contain neural tissue, allowing them to play a role in the neuroendocrine system. It is highly debated if the choroid plexus can be included as a CVO. It has a high concentration of fenestrated capillaries, but its lack of neural tissue and its primary role of producing cerebrospinal fluid (CSF) usually excludes the choroid plexus from the CVO classification.Research has also linked CVOs to body fluid regulation, cardiovascular functions, immune responses, thirst, feeding behavior and reproductive behavior.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report