Nervous System - Holy Trinity Diocesan High School
... Relay information between the brain and the body Information is electrical and chemical Receptors: specialized structures that pick up information Negative feedback to the body Stimulus-Response: much faster change but a short lasting effect compared to hormones Structures: 1. Neuron: Nerve cell; ...
... Relay information between the brain and the body Information is electrical and chemical Receptors: specialized structures that pick up information Negative feedback to the body Stimulus-Response: much faster change but a short lasting effect compared to hormones Structures: 1. Neuron: Nerve cell; ...
The Nervous System
... required to cause an impulse in a neuron A stimulus that is weaker than the threshold will not produce an impulse The brain determines if a stimulus, like touch or pain, is strong or weak from the frequency of action potentials ...
... required to cause an impulse in a neuron A stimulus that is weaker than the threshold will not produce an impulse The brain determines if a stimulus, like touch or pain, is strong or weak from the frequency of action potentials ...
Unit M - Notes #1 Neurons - Mr. Lesiuk
... -Interrupted areas of the Myelin Sheath due to gaps between one Schwann cell and the next. -Speeds up transmission of impulse. 6. Axon Terminals (Synaptic Endings) - The branches found at the end of the axon. - Each terminal ends with a small swelling (axon bulb) which houses many synaptic vesicles ...
... -Interrupted areas of the Myelin Sheath due to gaps between one Schwann cell and the next. -Speeds up transmission of impulse. 6. Axon Terminals (Synaptic Endings) - The branches found at the end of the axon. - Each terminal ends with a small swelling (axon bulb) which houses many synaptic vesicles ...
File
... At this point, please go back to your diagram summaries and revise them. You should be able to use correct terminology and have a better understanding of what is going on. ...
... At this point, please go back to your diagram summaries and revise them. You should be able to use correct terminology and have a better understanding of what is going on. ...
Chemistry of Neurotransmitters
... • They are ligand-gated ion channels. The receptors for stimulatory transmitters mediate the inflow of cations (mainly Na+). When these open after binding of the transmitter, local depolarization of the postsynaptic membrane occurs. ...
... • They are ligand-gated ion channels. The receptors for stimulatory transmitters mediate the inflow of cations (mainly Na+). When these open after binding of the transmitter, local depolarization of the postsynaptic membrane occurs. ...
Sample Questions for Evaluation #1 – General
... b) a cell that serves as the basic building block of the nervous system. c) a layer of fatty tissue that encases the fibers of many neurons. d) an antagonist molecule that blocks neurotransmitter receptor sites. 12. A synapse is a(n): a) neural cable containing many axons. b) chemical messenger that ...
... b) a cell that serves as the basic building block of the nervous system. c) a layer of fatty tissue that encases the fibers of many neurons. d) an antagonist molecule that blocks neurotransmitter receptor sites. 12. A synapse is a(n): a) neural cable containing many axons. b) chemical messenger that ...
PPt #2 Human Body Nervous system
... Cell Body: contains the nucleus & organelles Axon: long extension that carries electrical messages away from the body to the terminal axons Terminal Axons: passes the signal to the next cell. Myelin sheath: Protective covering for axon ...
... Cell Body: contains the nucleus & organelles Axon: long extension that carries electrical messages away from the body to the terminal axons Terminal Axons: passes the signal to the next cell. Myelin sheath: Protective covering for axon ...
The Nervous System
... 2. Responds and adapts to changes that occur both inside and outside the body (Ex: pain, temperature, pregnancy) ...
... 2. Responds and adapts to changes that occur both inside and outside the body (Ex: pain, temperature, pregnancy) ...
Nervous System Nervous System
... organization of cells into tissues, and tissues into organs. The structure and function of organs determine their relationships within body systems of an organism. Homeostasis allows the body to perform its normal functions. ...
... organization of cells into tissues, and tissues into organs. The structure and function of organs determine their relationships within body systems of an organism. Homeostasis allows the body to perform its normal functions. ...
file - Athens Academy
... fills the central canal in the spinal cord and the ventricles within the brain. ...
... fills the central canal in the spinal cord and the ventricles within the brain. ...
Document
... – Cerebral Palsy: is a disorder that affects muscle tone, movement, and motor skills (the ability to move in a coordinated and purposeful way). CP is usually caused by brain damage that occurs before or during a child's birth, or during the first 3 to 5 years of a child's life. There is no cure for ...
... – Cerebral Palsy: is a disorder that affects muscle tone, movement, and motor skills (the ability to move in a coordinated and purposeful way). CP is usually caused by brain damage that occurs before or during a child's birth, or during the first 3 to 5 years of a child's life. There is no cure for ...
Unit 3A: Neural Processing and the Endocrine System Introduction
... we do because of (1) our bodies, (2) our minds or thinking, and (3) the culture that we live in. Neurons 1. Neurons are nerve cells. There are a few types to know… 1. Sensory neurons – Take messages from the body, up the spinal cord, to the brain. There are millions of these. 2. Motor neurons – Take ...
... we do because of (1) our bodies, (2) our minds or thinking, and (3) the culture that we live in. Neurons 1. Neurons are nerve cells. There are a few types to know… 1. Sensory neurons – Take messages from the body, up the spinal cord, to the brain. There are millions of these. 2. Motor neurons – Take ...
PSY 301 – Summer 2004
... A branch of psychology that concerns itself with the links between biology and behavior. ...
... A branch of psychology that concerns itself with the links between biology and behavior. ...
Nervous System
... Binding of neurotransmitter opens ion channels, resulting in graded potentials. Copyright © 2010 Pearson Education, Inc. ...
... Binding of neurotransmitter opens ion channels, resulting in graded potentials. Copyright © 2010 Pearson Education, Inc. ...
ch4_1 - Homework Market
... many synapses. • Final cellular activity is a summation of these many excitatory and inhibitory synaptic signals. ...
... many synapses. • Final cellular activity is a summation of these many excitatory and inhibitory synaptic signals. ...
NERVOUS and ENDOCRINE SYSTEMS TEST PREVIEW
... 10. Which type of drug inhibits transmission of sensory impulses at a synapse? 11. What are the 3 main parts of the brain and what does each part control? 12. How does alcohol act on the brain? 13. How does a nerve impulse travel from one neuron to the next? 14. How does a nerve impulse travel throu ...
... 10. Which type of drug inhibits transmission of sensory impulses at a synapse? 11. What are the 3 main parts of the brain and what does each part control? 12. How does alcohol act on the brain? 13. How does a nerve impulse travel from one neuron to the next? 14. How does a nerve impulse travel throu ...
October 25
... The axons penetrate a thin layer of bone called the cribiform plate, then enter the olfactory bulb. ...
... The axons penetrate a thin layer of bone called the cribiform plate, then enter the olfactory bulb. ...
Nervous Systems (ch. 48 & 49) Sum13
... Bring signals from other neurons. 2 Dendrites: Receive signals from other neurons. ...
... Bring signals from other neurons. 2 Dendrites: Receive signals from other neurons. ...
The Nervous System
... • Nervous systems function in sensory input, integration, and motor output. • The nervous system is composed of neurons and supporting cells. • Membrane potentials arise from differences in ion concentrations between a cell’s contents and the extracellular fluid. • An action potential is an all-or-n ...
... • Nervous systems function in sensory input, integration, and motor output. • The nervous system is composed of neurons and supporting cells. • Membrane potentials arise from differences in ion concentrations between a cell’s contents and the extracellular fluid. • An action potential is an all-or-n ...
SBI4U Nervous System
... carries impulses towards the cell body • Axon: extension of the cytoplasm that carries nerve impulses away from the cell body • Myelin Sheath: insulated covering over the axon • Axon Terminal: contains synapses, specialized structures where neurotransmitter chemicals are released in order to communi ...
... carries impulses towards the cell body • Axon: extension of the cytoplasm that carries nerve impulses away from the cell body • Myelin Sheath: insulated covering over the axon • Axon Terminal: contains synapses, specialized structures where neurotransmitter chemicals are released in order to communi ...
Name: Date: Period: ______ Unit 7, Part 2 Notes: The Nervous
... reference microelectrode placed outside the cell, and a voltmeter (voltage meter). ...
... reference microelectrode placed outside the cell, and a voltmeter (voltage meter). ...
Nervous System Study Guide 1
... (a) axon, (b) cell body, (c) dendrites, (d) internodes, (e) myelin, (f) nodes of Ranvier, (g) synaptic terminals ...
... (a) axon, (b) cell body, (c) dendrites, (d) internodes, (e) myelin, (f) nodes of Ranvier, (g) synaptic terminals ...
Chapter 3: The Nervous System
... ▫ 10 billion in the brain alone ▫ Receives, processes and transmits information Each neuron in the brain received signals from thousands of other neurons. ...
... ▫ 10 billion in the brain alone ▫ Receives, processes and transmits information Each neuron in the brain received signals from thousands of other neurons. ...
Stimulus (physiology)
In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction. These sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanorceptors. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to the central nervous system (CNS), where it is integrated and a decision on how to react is made. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.