How does an axon know where to go?
... - Contains several finger-like projections that are called filopodia and sheet-like projections called lamellipodia. - Filopodia and lamellipodia contain actin-filaments. - The growth cone core or central domain contains microtubules, mitochondria and vesicles. ...
... - Contains several finger-like projections that are called filopodia and sheet-like projections called lamellipodia. - Filopodia and lamellipodia contain actin-filaments. - The growth cone core or central domain contains microtubules, mitochondria and vesicles. ...
Chapter 12 Nervous System Cells
... several knobs being activated simultaneously and stimulating different locations on the postsynaptic membrane, producing an action potential – Temporal summation—when synaptic knobs stimulate a postsynaptic neuron in rapid succession, their effects can summate over a brief period of time to produce ...
... several knobs being activated simultaneously and stimulating different locations on the postsynaptic membrane, producing an action potential – Temporal summation—when synaptic knobs stimulate a postsynaptic neuron in rapid succession, their effects can summate over a brief period of time to produce ...
Assignment 2 - Gordon State College
... Review & Extra Credit: Brain and Nervous System Introduction to Psychology Name __________________________________ These questions can be answered from your textbook, class notes, and/or lecture slides. Complete this sheet and turn it in for 5 points extra credit on Test 1. It will not be graded but ...
... Review & Extra Credit: Brain and Nervous System Introduction to Psychology Name __________________________________ These questions can be answered from your textbook, class notes, and/or lecture slides. Complete this sheet and turn it in for 5 points extra credit on Test 1. It will not be graded but ...
More Introductory Stuff
... Basic unit of the nervous system Many parts and terms Axons Dendrites Synapses ...
... Basic unit of the nervous system Many parts and terms Axons Dendrites Synapses ...
Chapter 28
... • An individual nerve cell can possess both excitatory and inhibitory synapses. • Integration must occur in which the various excitatory and inhibitory electrical effects tend to cancel or reinforce one another. • If the result of the integration is a large enough depolarization, an action potential ...
... • An individual nerve cell can possess both excitatory and inhibitory synapses. • Integration must occur in which the various excitatory and inhibitory electrical effects tend to cancel or reinforce one another. • If the result of the integration is a large enough depolarization, an action potential ...
Chapter 17:
... • Lidocaine, an anesthetic works by stabilizing the neuronal membrane so it can’t depolarize • Endorphins and enkephalins are “natural” painkillers produced in the CNS, blocking the pain transmitter that usually attaches to the injured organ allowing the perception of pain • opiates (heroin, codein ...
... • Lidocaine, an anesthetic works by stabilizing the neuronal membrane so it can’t depolarize • Endorphins and enkephalins are “natural” painkillers produced in the CNS, blocking the pain transmitter that usually attaches to the injured organ allowing the perception of pain • opiates (heroin, codein ...
Reflex Arc - Point Loma High School
... The sensory neurons pass through the spinal cord which allows reflex actions to occur relatively quickly by activating spinal motor neurons without the delay of steering signals through the brain, although the brain will receive sensory input while the reflex action occurs. ...
... The sensory neurons pass through the spinal cord which allows reflex actions to occur relatively quickly by activating spinal motor neurons without the delay of steering signals through the brain, although the brain will receive sensory input while the reflex action occurs. ...
Chapter 12 - Nervous Tissue
... A. _______________ (glia) - Small cells that make up about 50% of the CNS; neuroglia support, nourish, and protect neurons. ______ brain tumors are formed by rapidly dividing glial cells. 1. ______ Neuroglia a. ____________ - star-shaped cells with many processes; functions: 1) Form structural suppo ...
... A. _______________ (glia) - Small cells that make up about 50% of the CNS; neuroglia support, nourish, and protect neurons. ______ brain tumors are formed by rapidly dividing glial cells. 1. ______ Neuroglia a. ____________ - star-shaped cells with many processes; functions: 1) Form structural suppo ...
File
... two neurons • Molecules called neurotransmitters are used to send chemical signals between neurons • Neurotransmitters are released from synaptic vesicles • The synaptic cleft is a space between the axon of cell 1 and the dendrite of cell 2. ...
... two neurons • Molecules called neurotransmitters are used to send chemical signals between neurons • Neurotransmitters are released from synaptic vesicles • The synaptic cleft is a space between the axon of cell 1 and the dendrite of cell 2. ...
Nervous System Study Guide 1
... 38. What must take place in order for the neuron to trigger? (Explain this in terms of the difference in charge between the inside and outside of the cell.) ...
... 38. What must take place in order for the neuron to trigger? (Explain this in terms of the difference in charge between the inside and outside of the cell.) ...
Chapter 2 Notes Packet (Part 1)
... o When a neuron fires, an impulse travels down the axon, out though the terminal branches into a tiny swelling that looks like a light bulb Called Terminal Button or ______________________________ o ______________________________: area composed of the axon terminal of one neuron, the synaptic spac ...
... o When a neuron fires, an impulse travels down the axon, out though the terminal branches into a tiny swelling that looks like a light bulb Called Terminal Button or ______________________________ o ______________________________: area composed of the axon terminal of one neuron, the synaptic spac ...
Sample Prelab Assignment - Neurobiology Laboratory
... There are two types of synapses in the brain, electrical and chemical synapses. In this lab, we will study chemical synapses by examining excitatory post synaptic potentials which are caused by the opening of ion channels. The transmission of information at a chemical synapse involves the convers ...
... There are two types of synapses in the brain, electrical and chemical synapses. In this lab, we will study chemical synapses by examining excitatory post synaptic potentials which are caused by the opening of ion channels. The transmission of information at a chemical synapse involves the convers ...
NEUROTRANSMITTERS IN THE CENTRAL NERVOUS SYSTEM
... into large dense-core vesicles in the neuronal body. They can be released at synapses in response to electrical activity and affect neighbouring cells, but the recent evidence shows that exocytosis of large dense-core vesicles seems to be a rather rare event [8]. While classical neurotransmitters re ...
... into large dense-core vesicles in the neuronal body. They can be released at synapses in response to electrical activity and affect neighbouring cells, but the recent evidence shows that exocytosis of large dense-core vesicles seems to be a rather rare event [8]. While classical neurotransmitters re ...
Introduction to the nervous system
... III) The signal leaves through the synapse to be passed along to the next nerve cell. 2)Neurons pass messages to each other using an electrical signal. Synapse- it triggers the neuron to release a chemical neurotransmitter. Neurotransmitters- brain chemicals that communicate information throughout o ...
... III) The signal leaves through the synapse to be passed along to the next nerve cell. 2)Neurons pass messages to each other using an electrical signal. Synapse- it triggers the neuron to release a chemical neurotransmitter. Neurotransmitters- brain chemicals that communicate information throughout o ...
Introduction to the nervous system
... III) The signal leaves through the synapse to be passed along to the next nerve cell. 2)Neurons pass messages to each other using an electrical signal. Synapse- it triggers the neuron to release a chemical neurotransmitter. Neurotransmitters- brain chemicals that communicate information throughout o ...
... III) The signal leaves through the synapse to be passed along to the next nerve cell. 2)Neurons pass messages to each other using an electrical signal. Synapse- it triggers the neuron to release a chemical neurotransmitter. Neurotransmitters- brain chemicals that communicate information throughout o ...
Biology 12 Name: Nervous System Practice Exam Types of Neurons
... d) The frequency of action potentials would be increased. 20. Why can an impulse traveling along an axon not reverse its direction? a) The myelin sheath will only permit one-way travel of an impulse. b) Sodium gates remain closed until the impulse reaches the synapse. c) The threshold required to cr ...
... d) The frequency of action potentials would be increased. 20. Why can an impulse traveling along an axon not reverse its direction? a) The myelin sheath will only permit one-way travel of an impulse. b) Sodium gates remain closed until the impulse reaches the synapse. c) The threshold required to cr ...
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. ...
Practice Test #2
... 31. The surgical removal of a large tumor from Allen's occipital lobe resulted in extensive loss of brain tissue. Allen is most likely to suffer some loss of: a. muscular coordination. b. language comprehension. c. speaking ability. d. visual perception. e. pain sensations. 32. The part of a neuron ...
... 31. The surgical removal of a large tumor from Allen's occipital lobe resulted in extensive loss of brain tissue. Allen is most likely to suffer some loss of: a. muscular coordination. b. language comprehension. c. speaking ability. d. visual perception. e. pain sensations. 32. The part of a neuron ...
Review #2 - Course Notes
... 28. The chemical messenger at every synaptic gap between a motor neuron and a muscle is: a. epinephrine. b. acetylcholine. c. curare. d. dopamine. 29. The right hemisphere is superior to the left at: a. solving arithmetic problems. b. recognizing people's faces. c. understanding simple verbal reques ...
... 28. The chemical messenger at every synaptic gap between a motor neuron and a muscle is: a. epinephrine. b. acetylcholine. c. curare. d. dopamine. 29. The right hemisphere is superior to the left at: a. solving arithmetic problems. b. recognizing people's faces. c. understanding simple verbal reques ...
Nervous tissue Nervous system
... • Multipolar neurons have one axon and two or more dendrites. The direction of impulses is from dendrite to cell body to axon or from cell body to axon. Functionally, the dendrites and cell body of multipolar neurons are the receptor portions of the cell, and their plasma membrane is specialized for ...
... • Multipolar neurons have one axon and two or more dendrites. The direction of impulses is from dendrite to cell body to axon or from cell body to axon. Functionally, the dendrites and cell body of multipolar neurons are the receptor portions of the cell, and their plasma membrane is specialized for ...
Communication within the Nervous System
... The Neural Membrane • Moves 3 Na+ outside for every 2 K+ inside ...
... The Neural Membrane • Moves 3 Na+ outside for every 2 K+ inside ...
Disuse
... The onset of changes in the axon terminal depends on two things: the length of the distal stump of axon and the species of animal The onset of end-plate failure is also species dependent, being much later larger mammals. When degenerative changes have started, only 3-5 hours are required for com ...
... The onset of changes in the axon terminal depends on two things: the length of the distal stump of axon and the species of animal The onset of end-plate failure is also species dependent, being much later larger mammals. When degenerative changes have started, only 3-5 hours are required for com ...
Power Point
... refractory period. If the stimulus is sufficient to initiate an action potential the entire fiber will fire. This is called the, “all or none principle,” for nerve fibers. ...
... refractory period. If the stimulus is sufficient to initiate an action potential the entire fiber will fire. This is called the, “all or none principle,” for nerve fibers. ...