Neuron_Exercises_HPsychAY10
... You will do this by engaging in a series of ten-minute projects with a partner. You will complete the following “stations” and/or projects in whatever order seems best to you: 1. Create a diagram of the structure of the neuron using construction paper and crayons or pencils. 2. Answer the following ...
... You will do this by engaging in a series of ten-minute projects with a partner. You will complete the following “stations” and/or projects in whatever order seems best to you: 1. Create a diagram of the structure of the neuron using construction paper and crayons or pencils. 2. Answer the following ...
File - Wk 1-2
... 1. List the ion channels and ionic fluxes involved in the phases of an action potential. Neurons are highly irritable (responsive to stimuli). When a neuron is adequately stimulated, an electrical impulse is generated and conducted along the length of the axon. This response is an action potential o ...
... 1. List the ion channels and ionic fluxes involved in the phases of an action potential. Neurons are highly irritable (responsive to stimuli). When a neuron is adequately stimulated, an electrical impulse is generated and conducted along the length of the axon. This response is an action potential o ...
Bowman`s capsule movie
... systems, nerve cells (called neurons) function almost identically in animal species as diverse as squid and humans • Plasma membranes of neurons are capable of generating electric signals called nerve impulses. ...
... systems, nerve cells (called neurons) function almost identically in animal species as diverse as squid and humans • Plasma membranes of neurons are capable of generating electric signals called nerve impulses. ...
Action Potential - Angelo State University
... 2. Anything that alters ion concentrations on the two sides of the membrane. Stimuli affect the resting membrane potential (polarized) 1. If there is no stimulus the membrane is said to be polarized: the membrane has potential; there is a separation of charges or a voltage across the plasmalemma. 2. ...
... 2. Anything that alters ion concentrations on the two sides of the membrane. Stimuli affect the resting membrane potential (polarized) 1. If there is no stimulus the membrane is said to be polarized: the membrane has potential; there is a separation of charges or a voltage across the plasmalemma. 2. ...
somatic sensation
... of stimulus. e.g. general thermal receptors respond to temperatures < 45 oC, whereas nociceptive thermal receptors respond to temperatures > 45 oC. Nociceptors have either free nerve endings or nonencapsulated end organs. They are not found in bone or brain tissue. Following tissue damage and nocice ...
... of stimulus. e.g. general thermal receptors respond to temperatures < 45 oC, whereas nociceptive thermal receptors respond to temperatures > 45 oC. Nociceptors have either free nerve endings or nonencapsulated end organs. They are not found in bone or brain tissue. Following tissue damage and nocice ...
Chapter 4
... Depolarization of the neuron results in the opening of sodium (Na+) ion channels – Na+ flows into cell, making it much more positively charged ...
... Depolarization of the neuron results in the opening of sodium (Na+) ion channels – Na+ flows into cell, making it much more positively charged ...
Document
... *sometimes the presynaptic neuron does not release enough neurotransmitter to open the gated Na channels just for a moment; then the depolarization that results may not be sufficient enough to reach threshold (this is a subthreshold depolarization & will not result in an action potential ...
... *sometimes the presynaptic neuron does not release enough neurotransmitter to open the gated Na channels just for a moment; then the depolarization that results may not be sufficient enough to reach threshold (this is a subthreshold depolarization & will not result in an action potential ...
Nervous Sys Learning targets
... 1. List the basic functions of the nervous system 2. draw a concept map to show the structural and functional divisions of the nervous system 3. List the types of neuroglia and cite their functions ...
... 1. List the basic functions of the nervous system 2. draw a concept map to show the structural and functional divisions of the nervous system 3. List the types of neuroglia and cite their functions ...
Slide 1
... FIGURE 5.5 Passive response properties of neuronal element. (A) Idealized cylindrical neuronal process. The injection of current into a particular point in the process will result in the flow of ions across three paths: down the process through the axial resistance (Raxial) and across the membrane ...
... FIGURE 5.5 Passive response properties of neuronal element. (A) Idealized cylindrical neuronal process. The injection of current into a particular point in the process will result in the flow of ions across three paths: down the process through the axial resistance (Raxial) and across the membrane ...
KKDP4: The role of neurotransmitters in the transmission of neural
... KKDP4: The role of neurotransmitters in the transmission of neural information between neurons (lock-and-key process) to produce excitatory effects (as with glutamate) or inhibitory effects (as with gamma amino butyric acid [GABA]) ...
... KKDP4: The role of neurotransmitters in the transmission of neural information between neurons (lock-and-key process) to produce excitatory effects (as with glutamate) or inhibitory effects (as with gamma amino butyric acid [GABA]) ...
file
... the outside of the nerve cell which raises the resting potential, thus making it easier to initiate an action potential (ions are even less in balance thus easier to get action potential going). The effect often makes the person more active and less depressed as nerve impulses (stimulation) are incr ...
... the outside of the nerve cell which raises the resting potential, thus making it easier to initiate an action potential (ions are even less in balance thus easier to get action potential going). The effect often makes the person more active and less depressed as nerve impulses (stimulation) are incr ...
5.2 Skeletal Muscle Actions
... A. Motor Unit – functional unit of the neuromuscular system - Composed of one motor neuron (nerve that stimulates skeletal muscle) and all muscle fibers stimulated by it (100 – 2,000 fibers) 1. Generating Action Potentials (nerve to muscle communication) - Motor neuron cell body (located in the spin ...
... A. Motor Unit – functional unit of the neuromuscular system - Composed of one motor neuron (nerve that stimulates skeletal muscle) and all muscle fibers stimulated by it (100 – 2,000 fibers) 1. Generating Action Potentials (nerve to muscle communication) - Motor neuron cell body (located in the spin ...
EXCITABLE TISSUES
... membrane. Some vesicles fuse with the neuronal surface membrane and burst releasing their neurotransmitter content into the cleft. The neurotransmitter in this case is Acetylcholine (ACh). The ACh diffuses rapidly across the narrow cleft and attaches to receptors on ...
... membrane. Some vesicles fuse with the neuronal surface membrane and burst releasing their neurotransmitter content into the cleft. The neurotransmitter in this case is Acetylcholine (ACh). The ACh diffuses rapidly across the narrow cleft and attaches to receptors on ...
Neurons & Transmission of Information
... sending neuron communicates with a receiving neuron across the synaptic cleft •Neurotransmitters = chemical that is released into the synaptic cleft from the axon terminal of the sending neuron, crosses the synapse, & binds to appropriate receptor sites on the dendrites or cell body of the receiving ...
... sending neuron communicates with a receiving neuron across the synaptic cleft •Neurotransmitters = chemical that is released into the synaptic cleft from the axon terminal of the sending neuron, crosses the synapse, & binds to appropriate receptor sites on the dendrites or cell body of the receiving ...
BIOLOGY 12: U NIT M/N - C A. CHAPTER REVIEW 1. What are the
... 18. Name the body system that integrates the information it receives from all over our body in order to make decisions. _____________________________________________________________________________________________________________________ 19. What is the Peripheral Nervous System made up of? Where ar ...
... 18. Name the body system that integrates the information it receives from all over our body in order to make decisions. _____________________________________________________________________________________________________________________ 19. What is the Peripheral Nervous System made up of? Where ar ...
An accident caused a tamping iron to go through his head
... They are the brain’s own pain killers Narcotics such as heroin replace them- why withdrawal is so painful ...
... They are the brain’s own pain killers Narcotics such as heroin replace them- why withdrawal is so painful ...
Human Vision: Electrophysiology and Psychophysics
... This is done by the transmission of chemicals called neurotransmitters. Presynaptic neuron ...
... This is done by the transmission of chemicals called neurotransmitters. Presynaptic neuron ...
Nerve cells (Neurons)
... _________________ or __________________. A group of fibers activated by the same nerve is a ________________. A muscle may be composed of a different number of motor units and each motor units may in turn consist of a different number of fibers. All fibers of a specific motor unit always have ...
... _________________ or __________________. A group of fibers activated by the same nerve is a ________________. A muscle may be composed of a different number of motor units and each motor units may in turn consist of a different number of fibers. All fibers of a specific motor unit always have ...
The Nervous System
... Stimulate the dendrites of other neurons or membranes of other cells. If a dendrite is stimulated, it sends its message to the cell body and the message is passed on If a muscle or gland is stimulated, a reaction occurs in that organ. ...
... Stimulate the dendrites of other neurons or membranes of other cells. If a dendrite is stimulated, it sends its message to the cell body and the message is passed on If a muscle or gland is stimulated, a reaction occurs in that organ. ...
Action potential
... The synaptic terminal releases a neurotransmitter that binds to the postsynaptic plasma membrane Produces temporary, localized change in permeability or function of postsynaptic cell Changes affect cell, depending on nature and number of stimulated receptors ...
... The synaptic terminal releases a neurotransmitter that binds to the postsynaptic plasma membrane Produces temporary, localized change in permeability or function of postsynaptic cell Changes affect cell, depending on nature and number of stimulated receptors ...
Chemical Messengers
... endorphins are kicking in." Athletes, in particular long distance runners, are said to experience a "runner's high" associated with endorphins. In fact, these labels are accurate, in the sense that endorphins play an important role in pain suppression, and as a result drugs that stimulate endorphins ...
... endorphins are kicking in." Athletes, in particular long distance runners, are said to experience a "runner's high" associated with endorphins. In fact, these labels are accurate, in the sense that endorphins play an important role in pain suppression, and as a result drugs that stimulate endorphins ...
The Nervous System
... Depolarization. If graded potentials sum to -55mV a threshold potential is achieved. This triggers an action potential. Axons only. Fig. 48.8c ...
... Depolarization. If graded potentials sum to -55mV a threshold potential is achieved. This triggers an action potential. Axons only. Fig. 48.8c ...
Learning Objectives
... The Nature of Nerve Signals 6. Define a membrane potential and a resting potential. 7. Describe the factors that contribute to a membrane potential. 8. Explain the role of the sodium-potassium pump in maintaining the resting potential. 9. Distinguish between gated and ungated ion channels and among ...
... The Nature of Nerve Signals 6. Define a membrane potential and a resting potential. 7. Describe the factors that contribute to a membrane potential. 8. Explain the role of the sodium-potassium pump in maintaining the resting potential. 9. Distinguish between gated and ungated ion channels and among ...
End-plate potential
End plate potentials (EPPs) are the depolarizations of skeletal muscle fibers caused by neurotransmitters binding to the postsynaptic membrane in the neuromuscular junction. They are called ""end plates"" because the postsynaptic terminals of muscle fibers have a large, saucer-like appearance. When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters (mostly acetylcholine) are exocytosed and the contents are released into the neuromuscular junction. These neurotransmitters bind to receptors on the postsynaptic membrane and lead to its depolarization. In the absence of an action potential, acetylcholine vesicles spontaneously leak into the neuromuscular junction and cause very small depolarizations in the postsynaptic membrane. This small response (~0.5mV) is called a miniature end plate potential (MEPP) and is generated by one acetylcholine-containing vesicle. It represents the smallest possible depolarization which can be induced in a muscle.