PowerPoint Slide Set Westen Psychology 2e
... and are conducted along the membrane to the axon hillock If the summated activity at the axon hillock raises the membrane potential past threshold, an action potential (AP) will occur During the AP, NA+ ions flow into the cell raising the membrane potential to +40 mV, producing the ...
... and are conducted along the membrane to the axon hillock If the summated activity at the axon hillock raises the membrane potential past threshold, an action potential (AP) will occur During the AP, NA+ ions flow into the cell raising the membrane potential to +40 mV, producing the ...
Orexin-A excites rat lateral vestibular nucleus neurons and improves
... present study, effect of orexin-A on the medial vestibular nucleus (MVN), which holds a key position in controlling head and eye movements, were investigated. Immunofluorescence histochemical results showed that both orexin 1 receptors (OX1Rs) and orexin 2 receptors (OX2Rs) are presented in the MVN ...
... present study, effect of orexin-A on the medial vestibular nucleus (MVN), which holds a key position in controlling head and eye movements, were investigated. Immunofluorescence histochemical results showed that both orexin 1 receptors (OX1Rs) and orexin 2 receptors (OX2Rs) are presented in the MVN ...
Chapter 10 Somatic and Special Senses
... Scientists are uncertain of how olfactory reception operates but believe that each odor stimulates a set of specific protein receptors in cell membranes. The brain interprets different receptor combinations as an olfactory code. Do olfactory receptors adapt easily? Taste: Taste_________ are the orga ...
... Scientists are uncertain of how olfactory reception operates but believe that each odor stimulates a set of specific protein receptors in cell membranes. The brain interprets different receptor combinations as an olfactory code. Do olfactory receptors adapt easily? Taste: Taste_________ are the orga ...
1 - Center for the Ecological Study of Perception and Action
... A. is an electrical phenomenon unique to the squid giant neuron. B. refers to the electrical current spread associated with the action potential. C. is such that the inside of the neuron is negatively charged relative to the outside. D. refers to the electrical difference induced by the introduction ...
... A. is an electrical phenomenon unique to the squid giant neuron. B. refers to the electrical current spread associated with the action potential. C. is such that the inside of the neuron is negatively charged relative to the outside. D. refers to the electrical difference induced by the introduction ...
Synapse formation
... • That is… that neurons which have been stimulated will have a greater ‘potential’ to fire when they are stimulated again. ...
... • That is… that neurons which have been stimulated will have a greater ‘potential’ to fire when they are stimulated again. ...
... 5. Describe how synapses can ‘filter out’ weak stimuli. When the stimulus is weak, the synapse acts as a gap which the impulse cannot cross and the stimulus is ‘filtered out’ due to insufficient secretion of neurotransmitters. 6. Describe the what is meant by ‘summation’ The cumulative effect of a s ...
The Nervous System Part I
... Nervous System – includes all neural tissue in the body Neural tissue – includes 2 types of cells: 1) Neurons – cells that send and receive electrical signals 2) Neuroglia (glial cells) – cells that support and protect neurons Organs of the Nervous System: 1) Brain and spinal cord 2) Sensory recept ...
... Nervous System – includes all neural tissue in the body Neural tissue – includes 2 types of cells: 1) Neurons – cells that send and receive electrical signals 2) Neuroglia (glial cells) – cells that support and protect neurons Organs of the Nervous System: 1) Brain and spinal cord 2) Sensory recept ...
Symptoms: visual disturbances, ______, loss of
... 1. ________ terminal of the presynaptic neuron 2. ___________ region on the postsynaptic neuron g. Synaptic cleft i. Fluid-filled space separating the presynaptic and postsynaptic neurons ii. Prevents nerve impulses from ___________ passing from one neuron to the next iii. Transmission across the sy ...
... 1. ________ terminal of the presynaptic neuron 2. ___________ region on the postsynaptic neuron g. Synaptic cleft i. Fluid-filled space separating the presynaptic and postsynaptic neurons ii. Prevents nerve impulses from ___________ passing from one neuron to the next iii. Transmission across the sy ...
Neuron - Schoolwires.net
... • Reached its threshold- then fires based on the all-ornone response. • Opens up a portal in axon, and lets in positive ions (Sodium) which mix with negative ions (Potassium) that is already inside the axon (thus Neurons at rest have a slightly negative charge). • The mixing of + and – ions causes a ...
... • Reached its threshold- then fires based on the all-ornone response. • Opens up a portal in axon, and lets in positive ions (Sodium) which mix with negative ions (Potassium) that is already inside the axon (thus Neurons at rest have a slightly negative charge). • The mixing of + and – ions causes a ...
Review questions for unit 2 File
... blood calcium. (in response to rising blood glucose, in response to a fall in plasma thyroxine concentration…) Draw a diagram that shows the visual pathways from receptor to interpretation/perception Draw a concept map that shows the functions of the inner ear Make a flow diagram showing how an indi ...
... blood calcium. (in response to rising blood glucose, in response to a fall in plasma thyroxine concentration…) Draw a diagram that shows the visual pathways from receptor to interpretation/perception Draw a concept map that shows the functions of the inner ear Make a flow diagram showing how an indi ...
Golgi Tendon Reflux
... might be torn. Although the tendon reflex is less sensitive than the stretch reflex, it can override the stretch reflex when tension is great, making you drop a very heavy weight, for example. Like the stretch reflex, the tendon reflex is ipsilateral. The sensory receptors for this reflex are called ...
... might be torn. Although the tendon reflex is less sensitive than the stretch reflex, it can override the stretch reflex when tension is great, making you drop a very heavy weight, for example. Like the stretch reflex, the tendon reflex is ipsilateral. The sensory receptors for this reflex are called ...
File
... Where are they located? The receptor cells are ________________ neurons with hairlike ________________ covering the dendrites. These project into the ____________________cavity. Nerve pathways: When olfactory receptors are stimulated, their fibers synapse with neurons in the ______________ _______ l ...
... Where are they located? The receptor cells are ________________ neurons with hairlike ________________ covering the dendrites. These project into the ____________________cavity. Nerve pathways: When olfactory receptors are stimulated, their fibers synapse with neurons in the ______________ _______ l ...
ND Lesson 2.2-Differentiated
... 1. Start this simulation with all of your ion channels closed. Look at the number of blackeyed peas representing sodium ions inside and outside the cell. If a sodium channel were suddenly opened so that sodium ions could move across the cell membrane, which direction would they tend to move based on ...
... 1. Start this simulation with all of your ion channels closed. Look at the number of blackeyed peas representing sodium ions inside and outside the cell. If a sodium channel were suddenly opened so that sodium ions could move across the cell membrane, which direction would they tend to move based on ...
Brain_s Building Blocks-Student
... – primate and human brain • researchers conclude that adult monkey and human brains are capable of growing relatively limited numbers of neurons throughout adulthood • Some new neurons play important role in continuing to learn and remember new things ...
... – primate and human brain • researchers conclude that adult monkey and human brains are capable of growing relatively limited numbers of neurons throughout adulthood • Some new neurons play important role in continuing to learn and remember new things ...
Human Anatomy & Physiology
... Most prominent type of muscle in the body May account for up to 60% body mass It is attached to bones at both ends by tendons ...
... Most prominent type of muscle in the body May account for up to 60% body mass It is attached to bones at both ends by tendons ...
Neurophysiology
... • Chain of nerve cells that runs from the brain through the spinal cord out to the muscle is called the motor ...
... • Chain of nerve cells that runs from the brain through the spinal cord out to the muscle is called the motor ...
key points - Dr. Tomas Madayag
... 14. Exteroreceptors provide information about the body’s external environment 15. Sensory receptors that are stimulated by the position of the body or its parts are called Proprioceptors 16. Muscle spindle receptors detect lengthening or stretching of muscle 17. Golgi tendon organ receptors detects ...
... 14. Exteroreceptors provide information about the body’s external environment 15. Sensory receptors that are stimulated by the position of the body or its parts are called Proprioceptors 16. Muscle spindle receptors detect lengthening or stretching of muscle 17. Golgi tendon organ receptors detects ...
The Brain, Biology, and Behavior
... and unable to speak. Activity in the patient’s motor cortex is detected by an implanted electrode. The signal is then amplified and transmitted to a nearby computer. By thinking in certain ways, patients can move an on-screen cursor. This allows them to spell out words or select from a list of messa ...
... and unable to speak. Activity in the patient’s motor cortex is detected by an implanted electrode. The signal is then amplified and transmitted to a nearby computer. By thinking in certain ways, patients can move an on-screen cursor. This allows them to spell out words or select from a list of messa ...
Sound frequency (pitch, tone) measured in hertz (cycles per sec)
... membranes, organ of corti, hair cells (inner & outer), spiral neurons. 3. Transduction at the hair cell -- stereocilia bend due to vibrations in the basilar membrane while tectorial membrane stays still. Bending causes depolarization, spiral neuron fires. 4. Tonotopy -- the basilar membrane is organ ...
... membranes, organ of corti, hair cells (inner & outer), spiral neurons. 3. Transduction at the hair cell -- stereocilia bend due to vibrations in the basilar membrane while tectorial membrane stays still. Bending causes depolarization, spiral neuron fires. 4. Tonotopy -- the basilar membrane is organ ...
Membrane Domains and Membrane Potential
... membrane potential will return to the resting potential. If the neuron is at resting potential (-70mV) and the conductance to K+ increases, the membrane potential will be hyperpolarized (it will move toward -90mV). Transmission along the axon of a neuron occurs due to sequential activation of voltag ...
... membrane potential will return to the resting potential. If the neuron is at resting potential (-70mV) and the conductance to K+ increases, the membrane potential will be hyperpolarized (it will move toward -90mV). Transmission along the axon of a neuron occurs due to sequential activation of voltag ...
control of body movement
... Most input from descending pathways goes to interneurons that then synapse with motor neurons. There are 2 general types of interneurons: i) local interneurons, that are confined to the general region of the motor neuron they regulate, ii) intersegmental interneurons, that extend along the spinal co ...
... Most input from descending pathways goes to interneurons that then synapse with motor neurons. There are 2 general types of interneurons: i) local interneurons, that are confined to the general region of the motor neuron they regulate, ii) intersegmental interneurons, that extend along the spinal co ...
Excitatory amino acid receptors
... – mGluR 1-8 •Group I = mGluR 1&5 linked to PLC •Group II = mGluR 2&3 linked to adenylate cyclase •Group III = mGluR 4&6-8 linked to adenylate cyclase ...
... – mGluR 1-8 •Group I = mGluR 1&5 linked to PLC •Group II = mGluR 2&3 linked to adenylate cyclase •Group III = mGluR 4&6-8 linked to adenylate cyclase ...
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.