• 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
An adult is experiencing inferior alternating hemiplegia. Which
An adult is experiencing inferior alternating hemiplegia. Which

... B) decreases when novel events occur. C) originates in the contralateral inferior olivary nucleus. D) inhibits cells in the deep nuclei. E) provides weak input to Purkinje cells via parallel fibers. ...
1 - mrnicholsscience
1 - mrnicholsscience

... 3. What is the main pathway between the brain and the PNS? 9. Name the layers of the meninges from outside to inside. 4. What does CSF flow through between the third and fourth ventricles? Where does CSF go when it leaves the brain? ...
The Nervous System - FW Johnson Collegiate
The Nervous System - FW Johnson Collegiate

... intensity, variation with respect to frequency does occur - a glass rod at 40˚C may cause a single neuron to reach threshold level while the same glass rod at 50˚C will cause 2 or more to fire. The greater the number of impulses, the greater the intensity of the response The Sequence of Events that ...
Nerves Ganglia Spinal nerves Cranial nerves Afferent neurons
Nerves Ganglia Spinal nerves Cranial nerves Afferent neurons

... Division of the ANS that regulates resting and nutrition-related functions such as digestion, defecation, and urination ...
Central Nervous System
Central Nervous System

...  Provides a means to send messages (impulses) to all parts of the body from the brain  Stores ________________ and allows for __________________ ...
Neurons Short Version
Neurons Short Version

... about as microbe eating scavengers (phagocytes) The oligodendroglia ( oligodendrocytes) hold nerve fibers together and produce myelin in the CNS ...
neurons and the nervous system
neurons and the nervous system

... Receive messages from other neurons and send them to the cell body  Cell Body or Soma  The control center of the neuron.  Function: Directs impulses from the dendrites to the axon.  Nucleus  Control center of the Soma.  Function: Tells the soma what to do. ...
Nerves Part 1 Powerpoint
Nerves Part 1 Powerpoint

... central nervous system (CNS) • Sensory and motor neurons form the peripheral nervous system (PNS) ...
Exercise 13
Exercise 13

... visceral sensory receptors • Special sensory receptors that detect special ...
The Body and the Brain
The Body and the Brain

... parts of the brain could change behavior. An EEG – or electroencephalogram – is a device that records the electrical activity of the brain. Electrodes attached to the skull pick up on the electrical charges – called brain waves – and patterns of these waves can be associated with sleep, thought, and ...
Physical features directly related to personality and metal processes
Physical features directly related to personality and metal processes

... which could do a phrenological reading complete with printout. It is said that this device netted its owners about $200,000 at the 1934 Century of Progress Exposition in Chicago. ...
Exploring the Human Nervous System
Exploring the Human Nervous System

... Saltatory conduction is faster than conduction on unmyelinated neurons. ...
Neurons Firing of a neuron
Neurons Firing of a neuron

... The Nervous System ...
Chapter 1 Lecture Outline
Chapter 1 Lecture Outline

... - Intrinsic control- involves detecting deviations and making corrections within an organ, often called autoregulation, benefits the organ, not the organism - Extrinsic control- responses of an organ that are triggered by factors external to the organ or systems. Can over-ride intrinsic regulation, ...
Internal Regulation
Internal Regulation

... Osmotic pressure for water to flow occurs when solutes are more concentrated in one area than another. If something salty is eaten, then sodium ions spread throughout the fluid outside of cells but cannot cross into cells. This draws water out of the cells (to equalize total concentrations) with the ...
Mind, Brain & Behavior
Mind, Brain & Behavior

... Scavengers, removing debris after injury Buffer and maintain potassium ion concentrations Guide migration of neurons during development Create blood-brain barrier, nourish neurons ...
Damage to the frontal lobes can lead to
Damage to the frontal lobes can lead to

... regulates metabolism (how quickly/slowly one digests food) – Not enough hormone (hypothyroidism)= sluggish, no appetite – Too much hormone (hyperthyroidism)=eat a lot, hyperactive Adrenal glands release cortisol & epinephrine (adrenalin) when person frightened or angry Hypothalamus (part of limbic s ...
notes as
notes as

... Idealized neurons • To model things we have to idealize them (e.g. atoms) – Idealization removes complicated details that are not essential for understanding the main principles – Allows us to apply mathematics and to make analogies to other, familiar systems. – Once we understand the basic princip ...
File
File

... ‣ Limbic System - associated with emotions and drives • Amygdala - controls emotion • Hippocampus - consolidates memory • Hypothalamus - directs maintenance activities - Eating, drinking, body temperature, and control of emotions - Helps govern the endocrine system via the pituitary gland ...
The NERVOUS System
The NERVOUS System

... E. Characteristics of Nerves • Nerves (Neurons) • amitotic: they do not divide (cannot be replaced if destroyed) -high metabolic rate-require constant O2 and glucose, die within a few minutes without O2 ...
Nervous-histology
Nervous-histology

... Formed by brain endothelial cells, which are connected by tight  junctions with an extremely high electrical resistivity . allows the passage of water, some gases, and lipid-soluble  molecules by passive diffusion, as well as the selective transport of molecules such as glucose and amino acids tha ...
CNS: Spinal Cord Function
CNS: Spinal Cord Function

... commanding voluntary motor response; coordinates other areas of the brain; and carries out higher thought processes, memory, language, speech, and learning. ...
Sensory Neuron Processing
Sensory Neuron Processing

... o Each sensory neuron responds primarily to only one particular type of stimulus  This is called it’s normal – Example: photoreceptors, chemoreceptors  The dendrite of the sensory neuron transduces (converts) the stimulus into changes in membrane potential. stimulus >>>>> increased permeability of ...
Chapter 2
Chapter 2

... Synapse – site of transmission of nerve impulses from one nerve cell to another – Axon terminal – branches at the end of axon – Synaptic bulb (knob) – rounded area on the end of the axon terminal – Synaptic cleft (gap)– space between bulb of one cell and the dendrite of another – Receptor sites- hol ...
Brainfunction - Oakton Community College
Brainfunction - Oakton Community College

... Therefore, the axon will no longer release neurotransmitters to surrounding neurons. The neurons in the peripheral nervous system are the major target. So motor output and sensory input messages are not being handled in an efficient fashion. ...
< 1 ... 235 236 237 238 239 240 241 242 243 ... 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