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nervous system
nervous system

... the sensory receptors throughout the body and relays that information to the proper region of the cerebrum for further processing e.) Hypothalamus: control center for recognition and analysis for hunger, thirst, fatigue, anger, and body temperature; also controls the coordination of the nervous and ...
TECHNIQUES2001
TECHNIQUES2001

... • Computer combines a series of contrast XRays taken from circling around head to create a CT scan of one 2-D horizontal section of the brain. • 1 regular X-RAY would not work. ...
Module Two
Module Two

... Each one is a tiny information-processing system with thousands of connections for receiving and sending electrochemical signals to other neurons. ...
BOX 42.2 WHY BRAIN SIZE IS IMPORTANT Larger brains are
BOX 42.2 WHY BRAIN SIZE IS IMPORTANT Larger brains are

... dendrites would be longer, unless the thickness of the axons and dendrites were increased with the added length (Bekkers & Stevens, 1970). Thus, larger brains would have larger neurons with longer, thicker axons and dendrites. This suggests that brains would reach a maximum size, perhaps not much la ...
Chapter 17:
Chapter 17:

... – hypothalamus – below the thalamus, related to pituitary, – connects endocrine to the nervous system, receives sensory info, instincts, temperature control (ANS) – pituitary gland – influenced by the hypthalamus, part of the endocrine system (master gland) – pineal gland – part of the endocrine sys ...
Chapter 3: Biological Bases of Behavior
Chapter 3: Biological Bases of Behavior

... • __5__ are cells that receive, integrate, and transmit information…permitting communication in the nervous system. • A “typical” neuron consists of a _6_, or cell body; dendrites, which are feelerlike structures that are specialized to receive information; and an _7_, which is a long, thin fiber th ...
Autonomic Nervous System Peripheral NS and Spinal Cord A
Autonomic Nervous System Peripheral NS and Spinal Cord A

... Subcortical Structures •  Thalamus relay station for all sensory information going to cerebral cortex. The brain s switch board. Routs sensory messages to the right location. More than switchboard. May also filter important and unimportant information by accentuating it. •  Hypothalamus responsible ...
Study Guide - WordPress.com
Study Guide - WordPress.com

... 6. A reflex arc is a pathway that moves in the shape of an arch from the sensory neuron, through the spinal cord, and out a motor neuron. 7. Functions controlled by the autonomic nervous system are those that are automatic, involuntary, and occur without thinking about it. 8. The cerebral cortex is ...
Brain Messages - rm13brainwaves
Brain Messages - rm13brainwaves

... It controls the rate we grow, our feelings of hunger and more. It controls the body’s systems and organs, keeping them working like they should. The PNS is made up of the nerve cells or neurons that are ‘wired’ together throughout the body, sort of communicating with each other. The messages move fr ...
The Nervous System
The Nervous System

... Controls mechanisms needed to maintain normal body temperature Regulates feelings of hunger and satiety Regulates sleep and the sleep cycle ...
3 layers
3 layers

... • glucose, proteins, lactic acid, urea, ions • made by specialized cells in the lateral ventricles – choroid plexus – networks of capillaries in the walls of the ventricles – covered by ependymal cells (epithelial) cells) that filter the blood plasma and produce CSF by secreting it – these cells are ...
APPLICATION FOR MRC STUDENTSHIPS TO COMMENCE 2009
APPLICATION FOR MRC STUDENTSHIPS TO COMMENCE 2009

... This studentship will investigate how dopamine neurons are specified during development and how its dysfunction is associated with neurodevelopmental disorders including ADHD and Schizophrenia. The study will focus on the function of a transcription factor in the specification and function of a grou ...
Ch02
Ch02

... Caption: Three types of stimuli that Hubel and Wiesel (1959, 1965) found caused neurons in the cat cortex to respond. Neurons responded to bars with a specific orientation, to bars with a specific orientation moving in a particular direction, and bars of a particular length moving in a particular d ...
Brain Presentation1
Brain Presentation1

... • All or None Action Potential- There is either enough stimulation or the neuron doesn’t fire • Action Potential- Enough stimulation received from another cell that causes the axon membrane to become permeable that opens gates that causes depolarization (cell becomes positively charged) to occur tha ...
The Nervous System
The Nervous System

... – 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 toe or if y ...
Chapter 17:
Chapter 17:

... hypothalamus – below the thalamus, related to pituitary, connects endocrine to the nervous system, receives sensory info, instincts, temperature control (ANS) pituitary gland – influenced by the hypthalamus, part of the endocrine system (master gland) pineal gland – part of the endocrine system – me ...
Nervous System - cloudfront.net
Nervous System - cloudfront.net

... the neurons send a message straight to the brain. This action of getting information from the surrounding environment is called sensory input because things are being sent to the brain by way of the senses.  integration– The interpretation, or translation, of things that have been felt, tasted, and ...
Bio 103 Nervous System
Bio 103 Nervous System

... - masses of gray matter - deep within cerebral hemispheres - produce ___________ - control certain muscular activities primarily by inhibiting motor functions G. Diencephalon - Area between cerebral hemispheres and above the brainstem - Surrounds third ventricle ...
bio 342 human physiology
bio 342 human physiology

... Analogy: experiments to discover the function of a battery in a car. ...
File nervous system, ppt
File nervous system, ppt

...  Parkinson’s disease—characterized by abnormally low levels of dopamine in motor control areas of the brain; patients usually exhibit involuntary trembling and muscle rigidity  Depression - characterized by abnormally low levels of serotonin. ...
ANS VS PNS
ANS VS PNS

...  The hypothalamus helps regulate the body temperature, hunger, and electrolyte pathways.  The limbic system and cerebral cortex controls the autonomic nervous system during emotional stress. ...
Lecture #19 - Suraj @ LUMS
Lecture #19 - Suraj @ LUMS

... composed of the parts of the hindbrain and midbrain. • The medulla oblongata and pons control heart rate, constriction of blood vessels, digestion and respiration. • The midbrain consists of connections between the hindbrain and forebrain. Mammals use this part of the brain only for eye reflexes. • ...
Chapter 02: Neurons and Glia
Chapter 02: Neurons and Glia

... Dendritic membrane (postsynaptic membrane) contains many specialized receptors for neurotransmitters Dendritic spines Some neurons have these structures for receiving some types of inputs Discovered by Cajal Believed to isolate various chemical reactions Dynamic structures affected by the type and a ...
ACh - Perkins Science
ACh - Perkins Science

... a.Nicotinic ACh receptors 1)Can be stimulated by nicotine Found on the motor end plate of skeletal muscle cells, in autonomic ganglia, and in some parts of the CNS b.Muscarinic ACh receptors 1)Can be stimulated by muscarine ...
Central Nervous System
Central Nervous System

... (the brain and spinal cord) to serve the limbs and organs. Unlike the central nervous system, however, the Peripheral Nervous System (PNS), it is not protected by bone, leaving it exposed to toxins and mechanical injuries. ...
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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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