Chapter 48
... • Opening other types of ion channels triggers a depolarization, a reduction in the magnitude of the membrane potential • For example, depolarization occurs if gated Na+ channels open and Na+ diffuses into the cell ...
... • Opening other types of ion channels triggers a depolarization, a reduction in the magnitude of the membrane potential • For example, depolarization occurs if gated Na+ channels open and Na+ diffuses into the cell ...
Document
... is constantly making adjustments. It is never at rest! Part I. Nerve Control • _____________________________ – _______________- specialized for the transition of impulses from one part of the body to another. •Neurons _______________ _______________ –Cannot be replaced. If outside the brain and spin ...
... is constantly making adjustments. It is never at rest! Part I. Nerve Control • _____________________________ – _______________- specialized for the transition of impulses from one part of the body to another. •Neurons _______________ _______________ –Cannot be replaced. If outside the brain and spin ...
Chapter 3: Biological Bases of Behavior
... 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 that transmits signals away from the soma to other neurons ...
... 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 that transmits signals away from the soma to other neurons ...
The Senses
... • All senses trigger the same type of action potential ▫ The part of the brain that is activated discriminates between the types of stimuli ...
... • All senses trigger the same type of action potential ▫ The part of the brain that is activated discriminates between the types of stimuli ...
The Biology of Mind Chapter 2 PowerPoint
... A. Gates open and sodium atoms rush in. B. Depolarization produces an action potential. C. The action potential speed down the axon. D. The sodium/potassium pump transports sodium ions back out of the cell. ...
... A. Gates open and sodium atoms rush in. B. Depolarization produces an action potential. C. The action potential speed down the axon. D. The sodium/potassium pump transports sodium ions back out of the cell. ...
Neurons and Functional Neuroanatomy
... length of the axon in one direction The action potential moves in one direction because the membrane is refractory (unable to respond) once the action potential has been initiated at any particular place on the membrane ...
... length of the axon in one direction The action potential moves in one direction because the membrane is refractory (unable to respond) once the action potential has been initiated at any particular place on the membrane ...
neurons
... of its membrane and allowing positive ions to rush in. • The neuron then quickly pushes the positively charged ions back out again and closes that section of its membrane. • The neuron then opens the next section of its membrane and allows the positively charged ions to rush in, and quickly pushes t ...
... of its membrane and allowing positive ions to rush in. • The neuron then quickly pushes the positively charged ions back out again and closes that section of its membrane. • The neuron then opens the next section of its membrane and allows the positively charged ions to rush in, and quickly pushes t ...
Electrical Stimulation of the Brain
... Peripheral Nervous System PNS includes all nerves outside the brain and ...
... Peripheral Nervous System PNS includes all nerves outside the brain and ...
The Nerve Impulse
... body but have a distinctive shape. • A motor neuron has its soma in the spinal cord and receives excitation from other neurons and conducts impulses along it axon to a muscle. • A sensory neuron is specialized at one end to be highly sensitive to a particular type of stimulation (touch, temperature, ...
... body but have a distinctive shape. • A motor neuron has its soma in the spinal cord and receives excitation from other neurons and conducts impulses along it axon to a muscle. • A sensory neuron is specialized at one end to be highly sensitive to a particular type of stimulation (touch, temperature, ...
The Nerve Impulse
... body but have a distinctive shape. • A motor neuron has its soma in the spinal cord and receives excitation from other neurons and conducts impulses along it axon to a muscle. • A sensory neuron is specialized at one end to be highly sensitive to a particular type of stimulation (touch, temperature, ...
... body but have a distinctive shape. • A motor neuron has its soma in the spinal cord and receives excitation from other neurons and conducts impulses along it axon to a muscle. • A sensory neuron is specialized at one end to be highly sensitive to a particular type of stimulation (touch, temperature, ...
Nervous System
... • Many cells of the body use the electric potential across the cell membrane to function – the membrane potential changes from its resting value due to a change in the environment of the cell • the change in the membrane potential causes the cell to “respond” to the change in its environment • Chang ...
... • Many cells of the body use the electric potential across the cell membrane to function – the membrane potential changes from its resting value due to a change in the environment of the cell • the change in the membrane potential causes the cell to “respond” to the change in its environment • Chang ...
Chapter 48 – Nervous Systems
... In fact, in the final phase of an action potential, called the undershoot, the membrane’s permeability to K+ is higher than at rest, so the membrane potential is closer to EK than it is at the resting potential. ...
... In fact, in the final phase of an action potential, called the undershoot, the membrane’s permeability to K+ is higher than at rest, so the membrane potential is closer to EK than it is at the resting potential. ...
AP Biology Study Guide
... 11. Describe the diversity of animal nervous systems and provide examples. Explain how the structure of the nervous system relates to the ways animals interact with their environment. 12. Describe the general structure of the brain, spinal cord, and associated nerves of vertebrates. Describe the for ...
... 11. Describe the diversity of animal nervous systems and provide examples. Explain how the structure of the nervous system relates to the ways animals interact with their environment. 12. Describe the general structure of the brain, spinal cord, and associated nerves of vertebrates. Describe the for ...
Neurons and Nervous System
... potential when they open and close. The membrane is depolarized when Na+ enters the cell and the inside of the neuron becomes less negative than when at rest. If gated K+ channels open and K+ leaves, the cell becomes more negative inside and the membrane is ...
... potential when they open and close. The membrane is depolarized when Na+ enters the cell and the inside of the neuron becomes less negative than when at rest. If gated K+ channels open and K+ leaves, the cell becomes more negative inside and the membrane is ...
Media:oreilly_genpsych_ch2_neuron
... Neurons integrate electrical signals (depolarization) received via synapses on their dendrites, from axons of other neurons When membrane potential exceeds threshold, action potential (spike) is sent down axon, triggering release of neurotransmitter in synapse, which opens ion channels on receiving ...
... Neurons integrate electrical signals (depolarization) received via synapses on their dendrites, from axons of other neurons When membrane potential exceeds threshold, action potential (spike) is sent down axon, triggering release of neurotransmitter in synapse, which opens ion channels on receiving ...
AP Biology Campbell 8th Edition Chapter 1 Study Guide
... neuronal membrane to sodium and potassium. The permeability changes as voltage-gated ion channels open and close. • In the following pages we will study step-by-step the changes that occur as an action potential is generated and then propagated down the axon. The Action Potential Begins at the Axon ...
... neuronal membrane to sodium and potassium. The permeability changes as voltage-gated ion channels open and close. • In the following pages we will study step-by-step the changes that occur as an action potential is generated and then propagated down the axon. The Action Potential Begins at the Axon ...
Physiology 2 - Sheet #6 - Dr.Loai Al-Zgoul - Done by: Yara
... Synapses depend greatly on the postsynaptic neuron’s receptors rather than on the type of neurotransmitters. The type of receptors determines the effect of the released neurotransmitter. There are two types of receptors (both are ligand-gated, ligand receptors and neurotransmitter binding):1- Ionotr ...
... Synapses depend greatly on the postsynaptic neuron’s receptors rather than on the type of neurotransmitters. The type of receptors determines the effect of the released neurotransmitter. There are two types of receptors (both are ligand-gated, ligand receptors and neurotransmitter binding):1- Ionotr ...
Chapter 14 - The Nervous System: Organization
... • A synaptic potential can be excitatory (they depolarize) or inhibitory (they polarize). Some neurotransmitters depolarize and others polarize. • There are more than 50 different neurotransmitters. • In the brain and spinal cord, hundreds of excitatory potentials may be needed before a postsynaptic ...
... • A synaptic potential can be excitatory (they depolarize) or inhibitory (they polarize). Some neurotransmitters depolarize and others polarize. • There are more than 50 different neurotransmitters. • In the brain and spinal cord, hundreds of excitatory potentials may be needed before a postsynaptic ...
Chapter 49 and 50 Presentations-Sensory and Motor Mechanisms
... Ion channels in the membranes of the dendrites open and close in response to the stimuli. The flow of ions across the membranes of these receptors results in a change in the membrane potential. ...
... Ion channels in the membranes of the dendrites open and close in response to the stimuli. The flow of ions across the membranes of these receptors results in a change in the membrane potential. ...
The Autonomic Nervous System - Ashland Independent Schools
... Active under normal, restful conditions Prepares body for normal activities Maintains homeostasis ...
... Active under normal, restful conditions Prepares body for normal activities Maintains homeostasis ...
the neural impulse
... 4. After transmitting a message, the axon returns to its resting state by pumping out positive ions through the channels on its membrane. This process is called the refractory period. Once the refractory period is over, the neuron is ready to transmit a message again. How does the axon of one neuron ...
... 4. After transmitting a message, the axon returns to its resting state by pumping out positive ions through the channels on its membrane. This process is called the refractory period. Once the refractory period is over, the neuron is ready to transmit a message again. How does the axon of one neuron ...
PowerPoint Slides
... time period. • Synapses vary in strength – Good connections allowing a large signal – Slight connections allow only a weak signal. – Synapses can be either excitatory or inhibitory. ...
... time period. • Synapses vary in strength – Good connections allowing a large signal – Slight connections allow only a weak signal. – Synapses can be either excitatory or inhibitory. ...
The Nervous System
... ensues, depolarizing the cell and causing the VM to increase. This is the rising phase of an AP. • Eventually, the Na+ channel will have inactivated and the K+ channels will be open. Now, K+ effluxes and repolarization occurs. This is the falling phase. – K+ channels are slow to open and slow to clo ...
... ensues, depolarizing the cell and causing the VM to increase. This is the rising phase of an AP. • Eventually, the Na+ channel will have inactivated and the K+ channels will be open. Now, K+ effluxes and repolarization occurs. This is the falling phase. – K+ channels are slow to open and slow to clo ...
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.