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Unit10 Nervous Wk 1
Unit10 Nervous Wk 1

... body movements and is made up of all neurons, sense organs, skin, skeletal muscles – Autonomic or ANS: involuntary control of body movements like reflex & controls such things as heart rate, body temp, digestion etc. ...
Smell
Smell

... to high the accessory can beprojections discriminated a.Each olfactory receptor cell expresses only a. Thin sheet of cells upform in our system and is shed every ten minutes olfactory epithelium, coalesce to a large ...
24. Sensory organs
24. Sensory organs

... Stimulation of ganglion cell’s whose axons form the… Optic nerve that cross at the diencephalon and goes to the thalamus that routes info to the visual cortex of occipital lobe and the reflex centers of brain stem • At the optic chiasm, a partial crossover of nerve fibers occurs ...
Biology 3.5 Responding to Stimuli
Biology 3.5 Responding to Stimuli

... • Some neurotransmitters remaining in the synaptic cleft will be broken down by an enzyme – this is called inactivation • The remaining chemicals are reabsorbed into the presynaptic neuron and used again to make new neurotransmitters. ...
Ions in Your Life
Ions in Your Life

... from being used. Excitation and extra excitation occurs and neurotransmitter stops being produced by the body itself. Neurotransmitters are blocked from going through reuptake transporters by original neuron. Extra excitation occurs and body stops producing neurotransmitter. ...
Lecture notes for Chapter 13
Lecture notes for Chapter 13

... above schema separate from Special sensory and Visceral sensory) Receives inputs from Exteroceptors, proprioceptors, and interoceptors Input relayed toward head, but processed along way ...
neurons
neurons

... Cell Body: Life support center of the neuron. Dendrites: Branching extensions at the cell body. Receive messages from other neurons. Axon: Long single extension of a neuron, covered with myelin [MY-uh-lin] sheath to insulate and speed up messages through neurons. Terminal Branches of axon: Branched ...
Additional Science B6 Module – What You Should Know
Additional Science B6 Module – What You Should Know

... I understand that the evolution of a larger brain gave early humans a better chance of survival I can recall that mammals have a complex brain of billions of neurons that allows learning by experience, including social behaviour I understand that during development the interaction between mammals an ...
Option E: Neurobiology and behaviour
Option E: Neurobiology and behaviour

... E.4.2 Explain how decision-making in the CNS can result from the interaction between the activities of excitatory and inhibitory presynaptic neurons at synapses. E.4.3 Explain how psychoactive drugs affect the brain and personality by either increasing or decreasing postsynaptic transmission. E.4.4 ...
HUMAN PHYSIOLOGY
HUMAN PHYSIOLOGY

... A. Nicotinic receptors enclose membrane channels and open when ACh bonds to the receptor. This causes a depolarization called an excitatory postsynaptic potential (EPSP) in skeletal muscle cells. B. The binding of ACh to muscarinic receptors opens ion channels indirectly, through the action of G-pro ...
2.1 Resonding for change
2.1 Resonding for change

... 1. Your ........ system carries fast....... impulses. Changes in the .............. are picked up by your................ 2. Complete: Receptor  ___  CNS  ___ Effector 3. Explain what happens in your nervous system when you see a piece of chocolate and eat it. ...
C. elegans
C. elegans

... Diffusible molecular cues and cell surface cues guide axon growth ...
Nervous System:
Nervous System:

... Ion pumps in the cell membranes of neurons release three positively charged sodium ions, while taking in only two positively charged potassium ions which creates a negative charge inside the cell. The space inside the neuron now has a resting potential, which is a kind of membrane potential, because ...
Spinal Cord and Ear - Mrs.Simmons Anatomy & Physiology I Lab IRSC
Spinal Cord and Ear - Mrs.Simmons Anatomy & Physiology I Lab IRSC

... changes in the environment • Somatic reflexes involve contraction of skeletal muscles • There are automatic or visceral reflexes which we are not usually conscious of ...
The Nervous System
The Nervous System

... Cannabis effects on Gray Matter - Heavy exposure to THC has been shown in many studies to reduce gray matter - This affect is drastically seen in maturing brains under the age of 25. - Researchers also have seen a decrease in IQ scores in long time cannabis users ...
Lesson 1 | The Nervous System
Lesson 1 | The Nervous System

... 1. A stimulus is a change in an organism’s environment that causes a (thought/response). 2. Neuron is another name for a (new cell/nerve cell). 3. The three kinds of neurons are sensory neurons, motor neurons, and (interneurons/axons). ...
The autonomic nervous system (ANS)
The autonomic nervous system (ANS)

... The effects of ACh and NE are either excitation or inhibition which is dependant on the receptor type allowing them to exert these different effects at different areas in the body ...
Intro-biological
Intro-biological

... If the neurotransmitter fits the receptor the message is passed on; if it does not, the message is blocked. Between the terminal and the dendrites, there is a gap called a ...
An Examination of the cell densities in Fmr1Ko mice
An Examination of the cell densities in Fmr1Ko mice

... male births and 1 of 8,000 female births.  Inactivation of the FMR-1 gene is thought to adversely affect synaptic maturation and brain circuitry. With notable hyperactivity hypersensitivity.  FMR1 knockout mice were used in this experiment. ...
Biology and Behaviour 40s
Biology and Behaviour 40s

... hormones are chemical substances that have an effect on structures elsewhere in the body. • While neurotransmitters work across the synaptic cleft 1/10,000mm wide, hormones work across the entire body. They can have an immediate and important impact on behaviour. ...
File
File

... Neurons either fire maximally or not at all, this is referred to as the “all or none” response  Increasing neuronal stimulation beyond a critical level will not result in an increased response  Neurons response to increased stimulation by increasing the frequency of firing, not the intensity at wh ...
Nervous Regulation
Nervous Regulation

...  Controls all ________ and some _________ movements.  The cerebellum receives impulses from the muscles and then sends impulses to the cerebral cortex to correct and ____________________________________.  Also responsible for _____________________________.  This region of the brain is enlarged i ...
NAS 150 The Skeletal System Brilakis Fall, 2003
NAS 150 The Skeletal System Brilakis Fall, 2003

... lamellae are lacuna which contain the trapped osteocytes. Osteons are arranged in bundles in the bone, with the whole bone surrounded by periosteum. Spongy Bone is found in the epiphyses of long bones, lining the medullary cavity and in large quantity in the short, flat and irregular bones. Spongy B ...
1. nervous system
1. nervous system

... the corresponding nerves either leave or enter. Therefore there is a cervical, thoracic, lumbar, and sacral segment of the spinal cord. A total of 31 pairs of spinal nerves connect the spinal cord with different organs and tissues of the body. There are 8 cervical, 12 thoracic, 5 lumbar, and 6 sacra ...
Central Nervous System
Central Nervous System

... Any process that occurs as a result of the organism thinking about it (have control over) Ex: ...
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Endocannabinoid system

The endocannabinoid system is a group of neuromodulatory lipids and their receptors in the brain that are involved in a variety of physiological processes including appetite, pain-sensation, mood, and memory; it mediates the psychoactive effects of cannabis and, broadly speaking, includes: The endogenous arachidonate-based lipids, anandamide (N-arachidonoylethanolamide, AEA) and 2-arachidonoylglycerol (2-AG); these are known as ""endocannabinoids"" and are physiological ligands for the cannabinoid receptors. Endocannabinoids are all eicosanoids. The enzymes that synthesize and degrade the endocannabinoids, such as fatty acid amide hydrolase or monoacylglycerol lipase. The cannabinoid receptors CB1 and CB2, two G protein-coupled receptors that are located in the central and peripheral nervous systems.The neurons, neural pathways, and other cells where these molecules, enzymes, and one or both cannabinoid receptor types are all colocalized form the endocannabinoid system.The endocannabinoid system has been studied using genetic and pharmacological methods. These studies have revealed that cannabinoids act as neuromodulators for a variety of processes, including motor learning, appetite, and pain sensation, among other cognitive and physical processes. The localization of the CB1 receptor in the endocannabinoid system has a very large degree of overlap with the orexinergic projection system, which mediates many of the same functions, both physical and cognitive. Moreover, CB1 is colocalized on orexin projection neurons in the lateral hypothalamus and many output structures of the orexin system, where the CB1 and orexin receptor 1 (OX1) receptors physically and functionally join together to form the CB1–OX1 receptor heterodimer.
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