• 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
Nervous System Organization
Nervous System Organization

... which consists of the brain and spinal cord, and which acts to integrate (interpret & issue instructions for) stimuli  The peripheral nervous system which consists of all the nerves outside the brain and spinal cord. These receive stimuli and effect responses in muscles ...
Evolution of the Nervous System
Evolution of the Nervous System

... Nervous Systems ...
PowerPoint Nervous System
PowerPoint Nervous System

... It connects all body parts to the central nervous system ...
The virtue of simplicity
The virtue of simplicity

... equivalently V5) might acquire their selectivity for pattern direction. This well-studied, midlevel area is highly specialized for the analysis of motion2,3. It receives direct inputs from primary visual cortex (V1) and in turn projects to premotor structures. One of the most provocative findings fr ...
Unit 2 PowerPoint 2.1 and 2.2
Unit 2 PowerPoint 2.1 and 2.2

... This long, cable like projection of the cell carries the electrochemical message (nerve impulse or action potential) along the length of the cell.  Depending upon the type of neuron, axons can be covered with a thin layer of myelin sheath, like an insulated electrical wire  Myelinated neurons are ...
Evolution of the Nervous System
Evolution of the Nervous System

... Nervous Systems ...
Outline 12
Outline 12

...  They respond to excessive stimulation from _______ or chemicals  Mechanoreceptors respond to physical forces on cells caused by touch, pressure, stretch, tension, or vibration  They include the organs of _________________ and balance  They include many receptors of the skin, viscera, and joints ...
hormones
hormones

... The CNS is made up of the brain and spinal cord. The PNS is made up of the nerves that extend throughout the body. The CNS consists of interneurons. The PNS consists of sensory and motor neurons. ...
Neuron PowerPoint
Neuron PowerPoint

... Neurons vary greatly in size and shape, depending on their specialized function: -Human brain  100 billion neurons -brain tissue  rice grain -10,000 neurons  Neurons are simple “cheap” structures, but highly specialized. ...
HYPOTHALAMUS
HYPOTHALAMUS

... Somatosensory information may also reach the hypothalamus via a direct route: a projection to the lateral hypothalamic area from wide-dynamic-range mechanoreceptive neurons in the spinal dorsal horn. Auditory input. Despite extensive study, no direct projection to the hypothalamus from the auditory ...
Leaving Certificate Biology Topic iQuiz
Leaving Certificate Biology Topic iQuiz

... Which of the following structures of a reflex arc transmits impulses toward the central nervous system? Receptor ...
The Autonomic Nervous System
The Autonomic Nervous System

... with bladder muscle tone to control urination. ...
Unit 3A Nervous System - Teacher Version
Unit 3A Nervous System - Teacher Version

... spatial junctions between neurons. 3. coordinate the activation of the parasympathetic and sympathetic nervous systems. 4. control pain through the release of opiate-like chemicals into the brain. 5. transmit signals to other neurons. ...
Ch 49 Pract Test Nervous System
Ch 49 Pract Test Nervous System

... from the environment to the spinal cord. b. from the spinal cord to the brain. c. from the central nervous system to a muscle or gland. d. from the environment to the brain. ...
A.L. Wafa`a sameer 2014 Nervous System/ Physiology Nervous system
A.L. Wafa`a sameer 2014 Nervous System/ Physiology Nervous system

... The ANS ( in association with the endocrine system ) is primarily responsible for maintaining a nearly constant internal environment of the body , regardless of the changes that take place in the external environment . This is done by regulation of the activities of smooth muscle , cardiac m. & cert ...
Regulation of breathing
Regulation of breathing

... Voluntary and reflex factor in the regulation of respiration  Although fundamentally automatic and regulated by chemical factors in the blood there is a separate voluntary system for the regulation of ventilation. It originates in the cerebral cortex and sends impulses to the nerves of the respira ...
Chapter 4
Chapter 4

... in actions requiring quick responses. ...
Skeletal, Muscular and Nervous Systems
Skeletal, Muscular and Nervous Systems

... A point where to more bones come together. ►Cartilage: A tough supportive tissue that is softer and more flexible than bone. ►Ossification: cartilage hardens and turns into bone. Remember, babies have approximately 100 more bones than adults. Cells continue to repair ...
NVCC Bio 211 - gserianne.com
NVCC Bio 211 - gserianne.com

... various effectors ...
Draw and describe the circuitry of a cerebellar nucleus: Include
Draw and describe the circuitry of a cerebellar nucleus: Include

... 1. Draw and label the circuitry of the cerebellar cortex. Include: inputs (climbing/mossy fibers), outputs (Purkinje cells, subcortical nuclei), and interneurons (granule cells plus basket, Golgi and stellate cells). Label synapses as excitatory or inhibitory. For the diagram of the cerebellar circu ...
AP Biology Study Guide
AP Biology Study Guide

... 11. Describe the diversity of animal nervous systems and provide examples. Explain how the structure of the nervous system relates to the ways animals interact with their environment. 12. Describe the general structure of the brain, spinal cord, and associated nerves of vertebrates. Describe the for ...
chapter 3 powerpoint
chapter 3 powerpoint

... Similar to nervous system, except hormones work a lot slower than neurotransmitters. Hormones ...
The Nervous System
The Nervous System

...  The Hypothalamus and Circadian Rhythms.  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. ...
ganglion trigeminale – large light pseudounipolar neurons
ganglion trigeminale – large light pseudounipolar neurons

... could divide it onto three different zones (nuclea), delicately separated from one another through fibers passing between them. Each of them contained heapings of pseudounipolar neurons, diffusely scattered and responsible for all three branches of nervus trigeminus. Despite monotonous cell picture, ...
PHYSIOLOGICAL PSYCHOLOGY Chapter 2
PHYSIOLOGICAL PSYCHOLOGY Chapter 2

... Endorphins were first discovered during the 1970s by researchers studying the effects of morphine and other opiates. To their surprise, the researchers learned there were special receptor sites for such drugs within the brain (Hughes et al., 1975). Why should such receptors exist? • Naturally occurr ...
< 1 ... 155 156 157 158 159 160 161 162 163 ... 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