Somatic nervous system
... Upper motor neurons release a neurotransmitter, acetylcholine, from their axon terminal knobs, which are received by nicotinic receptors of the alpha motor neurons. In turn, alpha motor neurons relay the stimuli received down their axons via the ventral root of the spinal cord. These signals then pr ...
... Upper motor neurons release a neurotransmitter, acetylcholine, from their axon terminal knobs, which are received by nicotinic receptors of the alpha motor neurons. In turn, alpha motor neurons relay the stimuli received down their axons via the ventral root of the spinal cord. These signals then pr ...
Week 2 Section Handout
... areas of representation in S1. The minimum distance at which two points can be distinguished from each other is approximately 1mm. Do you recall where on the body sensitivity is the highest and where it is the lowest? As a hint, think about how the somatosensory homunculus is distorted – what parts ...
... areas of representation in S1. The minimum distance at which two points can be distinguished from each other is approximately 1mm. Do you recall where on the body sensitivity is the highest and where it is the lowest? As a hint, think about how the somatosensory homunculus is distorted – what parts ...
Getting things where they need to go: Protein Targeting
... deform PM for clathrin coated vesicles. May suggest that using a helix to deform membrane is common mechanism for budding/fission ...
... deform PM for clathrin coated vesicles. May suggest that using a helix to deform membrane is common mechanism for budding/fission ...
Stopping nerve cell over-activity: a new drug target
... might stop nerve cell over-activity. But recent research has shown that the dopamineproducing cells affected in Parkinson’s have NMDA receptors that are different from ones found in other parts of the brain. And some types of NMDA receptors are important for normal brain development, learning and me ...
... might stop nerve cell over-activity. But recent research has shown that the dopamineproducing cells affected in Parkinson’s have NMDA receptors that are different from ones found in other parts of the brain. And some types of NMDA receptors are important for normal brain development, learning and me ...
The Nervous System
... released The neurotransmitters diffuse across the synapse and bind to receptors on the postsynaptic cell membrane ...
... released The neurotransmitters diffuse across the synapse and bind to receptors on the postsynaptic cell membrane ...
The Nervous System
... The Spinal Cord and Reflexes (simple, automatic response to sensory stimuli) ...
... The Spinal Cord and Reflexes (simple, automatic response to sensory stimuli) ...
Chapter 12: Neural Tissue
... • Cell voltage set at -70mV but membrane resistance can be altered to create current • Membrane resistance depends on permeability to ions: open or closed ion channels • Cell must always have some resistance or ions would equalize, voltage = zero – No current generated = no nervous impulse ...
... • Cell voltage set at -70mV but membrane resistance can be altered to create current • Membrane resistance depends on permeability to ions: open or closed ion channels • Cell must always have some resistance or ions would equalize, voltage = zero – No current generated = no nervous impulse ...
Nervous System
... What are the 3 parts of the brain? • cerebrum - controls thoughts, voluntary actions, & the sensations related to the five senses. • cerebellum - helps with balance & coordination. • brain stem - is located at the base of the brain and controls vital and involuntary processes (for example, breathin ...
... What are the 3 parts of the brain? • cerebrum - controls thoughts, voluntary actions, & the sensations related to the five senses. • cerebellum - helps with balance & coordination. • brain stem - is located at the base of the brain and controls vital and involuntary processes (for example, breathin ...
axonal terminals
... 1. Polarization of the neuron's membrane: Sodium is on the outside, and potassium is on the inside. • When a neuron is not stimulated — it's just sitting with no impulse to carry or transmit — its membrane is polarized. • Being polarized means that the electrical charge on the outside of the membran ...
... 1. Polarization of the neuron's membrane: Sodium is on the outside, and potassium is on the inside. • When a neuron is not stimulated — it's just sitting with no impulse to carry or transmit — its membrane is polarized. • Being polarized means that the electrical charge on the outside of the membran ...
Cellular Neuroscience - How Your Brain Works
... Reported prevalences of behavioral and psychiatric symptoms in Huntington's disease [10] ...
... Reported prevalences of behavioral and psychiatric symptoms in Huntington's disease [10] ...
Chapter 8
... A and B are stimulated enough to cause a suprathreshold graded depolarization, so an action potential results. Neuron C causes a graded hyperpolarization; A and C effects add, cancel each other out. ...
... A and B are stimulated enough to cause a suprathreshold graded depolarization, so an action potential results. Neuron C causes a graded hyperpolarization; A and C effects add, cancel each other out. ...
Chapter 12: Neural Tissue
... 3. The long axon carries the electrical signal (action potential) to its target. The structure of an axon is critical to its function. - axoplasm: the cytoplasm of the axon, which contains neurotubules, neurofibrils, enzymes and various organelles - axolemma: a specialized cell membrane, covers the ...
... 3. The long axon carries the electrical signal (action potential) to its target. The structure of an axon is critical to its function. - axoplasm: the cytoplasm of the axon, which contains neurotubules, neurofibrils, enzymes and various organelles - axolemma: a specialized cell membrane, covers the ...
Parts of a Neuron
... stimulus can trigger more neurons to fire, and to fire more often, but it does not affect the action potentials strength or speed. Intensity of an action potential remains the same throughout the length of the axon. ...
... stimulus can trigger more neurons to fire, and to fire more often, but it does not affect the action potentials strength or speed. Intensity of an action potential remains the same throughout the length of the axon. ...
Nervous System - Holy Trinity Diocesan High School
... Interruption of information being relayed between the brain and the body If the injury is high enough in the spinal cord and severe enough paralysis can occur ...
... Interruption of information being relayed between the brain and the body If the injury is high enough in the spinal cord and severe enough paralysis can occur ...
Document
... Olfactory receptors Chemoreceptors Located upper portions of nasal passages Dendrites are in cilia Axon goes directly to cerebral cortex Odorant or odorous substance binds proteins Second messenger response in receptor cell ...
... Olfactory receptors Chemoreceptors Located upper portions of nasal passages Dendrites are in cilia Axon goes directly to cerebral cortex Odorant or odorous substance binds proteins Second messenger response in receptor cell ...
The Two Messenger Services of the Brain
... Among the most important chemical messengers are adrenaline, histamine and various amino acids ...
... Among the most important chemical messengers are adrenaline, histamine and various amino acids ...
unit 3 study sheet - El Camino College
... 5. What is the refractory period? How and when does it happen? Why is it important? 6. What are the various types of ion channels in a neuron? 7. What is the role of positive feedback during an action potential? 8. What is the relationship between frequency of action potential and stimulus intensity ...
... 5. What is the refractory period? How and when does it happen? Why is it important? 6. What are the various types of ion channels in a neuron? 7. What is the role of positive feedback during an action potential? 8. What is the relationship between frequency of action potential and stimulus intensity ...
The somatic sensory system
... Tonic receptors – slowly adapting – they fire rapidly when first activated, than they slow and maintain firing as long as the stimulus is present (baroreceptors, proprioceptors) ...
... Tonic receptors – slowly adapting – they fire rapidly when first activated, than they slow and maintain firing as long as the stimulus is present (baroreceptors, proprioceptors) ...
12 Steps to Muscle Contraction
... muscle cell. The neuromuscular junction is the point where the axons of the nerve meet with the muscle cell. 2. Ach is released from the axon to receptors located on the sarcolemma 3. The binding Ach causes depolarization of the sarcolemma by opening ion channels and allowing Na+ ions into the muscl ...
... muscle cell. The neuromuscular junction is the point where the axons of the nerve meet with the muscle cell. 2. Ach is released from the axon to receptors located on the sarcolemma 3. The binding Ach causes depolarization of the sarcolemma by opening ion channels and allowing Na+ ions into the muscl ...
Nervous System
... • A young bird leaves the nest but does not become sexually mature until the following spring. • A male that has been hatched and reared in isolation can sing but not the species specific song. • If a young bird hears the adult song but its hearing is blocked before spring it is unable to repeat th ...
... • A young bird leaves the nest but does not become sexually mature until the following spring. • A male that has been hatched and reared in isolation can sing but not the species specific song. • If a young bird hears the adult song but its hearing is blocked before spring it is unable to repeat th ...
Molecular neuroscience
Molecular neuroscience is a branch of neuroscience that observes concepts in molecular biology applied to the nervous systems of animals. The scope of this subject primarily pertains to a reductionist view of neuroscience, considering topics such as molecular neuroanatomy, mechanisms of molecular signaling in the nervous system, the effects of genetics on neuronal development, and the molecular basis for neuroplasticity and neurodegenerative diseases. As with molecular biology, molecular neuroscience is a relatively new field that is considerably dynamic.