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file - Athens Academy
file - Athens Academy

... allow the current to flow easily between the extracellular fluid and the axon. allow action potentials to develop. allow for saltatory conduction of the action potential. All of these are true of nodes of Ranvier. ...
Endocrine and nervous system
Endocrine and nervous system

... the body that helps prepare for and deal with stress. -Also regulates kidney function. ...
UNIT 2: Internal geological agents
UNIT 2: Internal geological agents

... The relationship function is the ability to perceive what is going on in both the environment and the inside of the organism itself, and the ability to produce responses. There are two coordination systems which regulate all the human body funtions: A – The nervous system B – The endocrine system Di ...
Chapter 7 Nervous System Every conscious action is governed by
Chapter 7 Nervous System Every conscious action is governed by

...  The PNS: Autonomic division o Regulates the activity of involuntary muscles (cardiac and smooth) and glands to maintain homeostasis o Divided into 2 divisions:  Sympathetic - coordinates the body for the “fight or flight” response by speeding up metabolism, heart rate, and breathing while downreg ...
What is the Nervous System?
What is the Nervous System?

...  Neurons – individual cells in the nervous system that receive, integrate, and transmit information.  Parts of the Neuron: ...
Can an Injured Spinal Cord Be Fixed?
Can an Injured Spinal Cord Be Fixed?

... exerts involuntary control over the internal organs The somatic nervous system exerts voluntary control over skeletal muscles ...
File
File

... 11. __Synapses____ are the contact points where one neuron communicates with another. 12. Many axons are covered with a myelin sheath, which _accelerates__ the transmission of electrical signals along the axon. This sheath is made by specialized cells called _glial cells___.  Brain: oligodendrocyte ...
Neuron Structure
Neuron Structure

... • Active ingredient in marijuana is THC (tetrahydrocannabiol) • When THC binds to receptors, person feels high!!! • No THC in chocolate, but there are chemicals in choc that act like THC • You would have to eat 25 lbs of choc to get marijuana like effect • Choc also contains phenylethylamine, relate ...
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... • Active ingredient in marijuana is THC (tetrahydrocannabiol) • When THC binds to receptors, person feels high!!! • No THC in chocolate, but there are chemicals in choc that act like THC • You would have to eat 25 lbs of choc to get marijuana like effect • Choc also contains phenylethylamine, relate ...
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Human Biology Human Body Systems Nervous System

... nerves and ganglia that lie outside the CNS. (spinal nerves, cranial nerves, ganglia, motor and sensory neurons.) ...
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Chapter 9 Nerves

... Dendrites and the cell body provide receptive surfaces  A single AXON arises from the cell body and may be enclosed in a myelin sheath and a neurilemma. ...
jeopardy bio psych review
jeopardy bio psych review

... Central region of the brain that receives sensory signals and sends them to correct brain area for processing ...
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Chapter 2—Biological Bases of Behavior I. Neuroanatomy-

...  Sympathetic—“fight or flight” ...
Nervous System Vocab1 - Everglades High School
Nervous System Vocab1 - Everglades High School

... 30. Ganglia: Small collection of cell bodies outside of the CNS 31. White Matter: Dense collection of myelinated fibers 32. Gray Matter: contains mostly unmyelinated fibers and cell bodies 33. Polarized: The plasma membrane of a resting inactive neuron 34. Depolarization: The inward rush of sodium i ...
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nervous system

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Airgas template - Morgan Community College
Airgas template - Morgan Community College

... The dorsal horn cell columns contain the afferent (sensory) neurons and the ventral horn cell columns contain the efferent neurons. ...
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... • Includes nerves that extend through body • Gathers information from environment and sends it to brain • Takes commands from the brain to moves muscles ...
A New Source for New Neurons : TheologyPlus : http://www
A New Source for New Neurons : TheologyPlus : http://www

... team, “The ultimate goal we have in mind is that this may one day enable us to induce such conversion within the brain itself and thus provide a novel strategy for repairing the injured or diseased brain." That may be the goal, but it's hard to imagine this research will be limited to therapy. In fa ...
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Cardiovascular system

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... Thalamus- relays input from senses to higher structures Hippocampus- processes memories Cerebral cortex (Neocortex)- organizes information and initiates responses. ...
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Unit 2-Week 1 Notes Sheets

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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 ...
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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.
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