Tutorial 5: Sodium and Potassium Gradients at Rest
... This research has identified the electrochemical conditions existing while a neurons is inactive or at rest. This resting membrane potential of -70 millivolts (mV) is due to the difference in electrical charge found on the inside of the cell versus the outside of the cell, and is similar to the elec ...
... This research has identified the electrochemical conditions existing while a neurons is inactive or at rest. This resting membrane potential of -70 millivolts (mV) is due to the difference in electrical charge found on the inside of the cell versus the outside of the cell, and is similar to the elec ...
Somatic Sensations
... transmitted by unmyelinated axons • Visceral pain: not as well localized as pain originating from the skin pain impulses travel on secondary axons dedicated to the somatic afferents referred pain ...
... transmitted by unmyelinated axons • Visceral pain: not as well localized as pain originating from the skin pain impulses travel on secondary axons dedicated to the somatic afferents referred pain ...
Sensory Information Sensory Receptors
... Carry sensory information from the skin and musculature of the body wall, head, neck, and limbs Three major somatic sensory pathways The posterior column pathway The spinothalamic pathway The spinocerebellar pathway ...
... Carry sensory information from the skin and musculature of the body wall, head, neck, and limbs Three major somatic sensory pathways The posterior column pathway The spinothalamic pathway The spinocerebellar pathway ...
Chater 2 - Study Guide
... The pain of heroin withdrawal may be attributable to the fact that: under the influence of heroin the brain ceases production of endorphins. under the influence of heroin the brain ceases production of all neurotransmitters. during withdrawal the brain's production of all neurotransmitters is greatl ...
... The pain of heroin withdrawal may be attributable to the fact that: under the influence of heroin the brain ceases production of endorphins. under the influence of heroin the brain ceases production of all neurotransmitters. during withdrawal the brain's production of all neurotransmitters is greatl ...
Unit 3A Nervous System - Teacher Version
... action potential (excitatory neurotransmitters binding to receptors) must ...
... action potential (excitatory neurotransmitters binding to receptors) must ...
Study Guide for The Spinal Cord – Chapter 8, Part B Be familiar with
... root ganglion, dura mater, effector, endoneurium, epineurium, ganglion, gray matter, interneuron, lateral gray horn, lumbar enlargement, meninges, monosynaptic and polysynaptic reflex arc, motor neuron (fiber), nerve, nucleus (CNS), perineurium, peripheral nervous system, pia mater, reflex arc, sens ...
... root ganglion, dura mater, effector, endoneurium, epineurium, ganglion, gray matter, interneuron, lateral gray horn, lumbar enlargement, meninges, monosynaptic and polysynaptic reflex arc, motor neuron (fiber), nerve, nucleus (CNS), perineurium, peripheral nervous system, pia mater, reflex arc, sens ...
1. A biological psychologist would be more likely to study
... chemical messenger that triggers muscle contractions. automatic response to sensory input. neural network. junction between a sending neuron and a receiving neuron. neural cable containing many axons. ...
... chemical messenger that triggers muscle contractions. automatic response to sensory input. neural network. junction between a sending neuron and a receiving neuron. neural cable containing many axons. ...
Answers to Mastering Concepts Questions
... information, whereas white matter contains myelinated axons that transmit information to and from the brain. 3. Describe the functions of the neurons that form a reflex arc. In a reflex arc, a sensory neuron receives a stimulus from a sensory receptor. The axon of this neuron leads into the gray mat ...
... information, whereas white matter contains myelinated axons that transmit information to and from the brain. 3. Describe the functions of the neurons that form a reflex arc. In a reflex arc, a sensory neuron receives a stimulus from a sensory receptor. The axon of this neuron leads into the gray mat ...
File - JFS Psychology
... neurotransmitters into the synaptic cleft when stimulated by nerve impulses (action potentials) arriving at the presynaptic terminal, combination of neurotransmitters with postsynaptic receptors; postsynaptic effects either excitatory (depolarisation) or inhibitory (hyperpolarisation). Diagrams can ...
... neurotransmitters into the synaptic cleft when stimulated by nerve impulses (action potentials) arriving at the presynaptic terminal, combination of neurotransmitters with postsynaptic receptors; postsynaptic effects either excitatory (depolarisation) or inhibitory (hyperpolarisation). Diagrams can ...
5.4.1 Coordinated Movement
... 2. The action potentials stimulate the uptake of calcium ions into the presynaptic knob 3. Calcium ions cause the vesicles in the presynaptic knob, containing neurotransmitter, to fuse with the presynaptic membrane 4. The neurotransmitter diffuses across the synaptic cleft and binds to neurotransmit ...
... 2. The action potentials stimulate the uptake of calcium ions into the presynaptic knob 3. Calcium ions cause the vesicles in the presynaptic knob, containing neurotransmitter, to fuse with the presynaptic membrane 4. The neurotransmitter diffuses across the synaptic cleft and binds to neurotransmit ...
word - My eCoach
... c. a feedback loop to maintain homeostasis. d. an enzyme-catalyzed biochemical reaction. 30. Which statement is true about non-specific defenses? a. They play a minor role in the body’s defense against infection. b. They distinguish between different kinds of infectious agents. c. They do not work a ...
... c. a feedback loop to maintain homeostasis. d. an enzyme-catalyzed biochemical reaction. 30. Which statement is true about non-specific defenses? a. They play a minor role in the body’s defense against infection. b. They distinguish between different kinds of infectious agents. c. They do not work a ...
Review (10/25/16) updated
... Be careful with the ones in boxes. If he asks a test question about differences in phototransduction between rods and cones, C is not an answer. Color vision comes from having multiple cones that preferentially respond to different wavelengths. ...
... Be careful with the ones in boxes. If he asks a test question about differences in phototransduction between rods and cones, C is not an answer. Color vision comes from having multiple cones that preferentially respond to different wavelengths. ...
Rising blood glucose level - Grosse Pointe Public School System
... into the cell) reversing the charge cell is DEPOLARIZED Charge distribution is reestablished when K+ is allowed to leave the cell Cell is Repolarized Na+/K+ pump reestablishes the ion concentrations (expends the most energy in your body) ...
... into the cell) reversing the charge cell is DEPOLARIZED Charge distribution is reestablished when K+ is allowed to leave the cell Cell is Repolarized Na+/K+ pump reestablishes the ion concentrations (expends the most energy in your body) ...
Final Exam - Creighton Biology
... the action of siRNA. At what stage would normal synaptic transmission first be interrupted? u. v. w. x. y. ...
... the action of siRNA. At what stage would normal synaptic transmission first be interrupted? u. v. w. x. y. ...
Chapters 11: Introduction to the Nervous System and Nervous
... 1. AP in presynaptic neuron triggers ________ion channels in axon terminal to open 2. ____________ of calcium ions causes synaptic vesicles to release neurotransmitter into synaptic cleft 3. Neurotransmitters bind to ____________ on postsynaptic neuron 4. Ion channels open, leading to a local potent ...
... 1. AP in presynaptic neuron triggers ________ion channels in axon terminal to open 2. ____________ of calcium ions causes synaptic vesicles to release neurotransmitter into synaptic cleft 3. Neurotransmitters bind to ____________ on postsynaptic neuron 4. Ion channels open, leading to a local potent ...
C8003 Psychobiology sample paper 2016-17
... GABA depolarises the postsynaptic cell as a consequence of chloride movement into that cell GABA-A receptors have a single binding site at which GABA and alcohol interact GABA is taken up into the presynaptic cell after it acts at the receptor GABA-A receptors require second messenger systems to hav ...
... GABA depolarises the postsynaptic cell as a consequence of chloride movement into that cell GABA-A receptors have a single binding site at which GABA and alcohol interact GABA is taken up into the presynaptic cell after it acts at the receptor GABA-A receptors require second messenger systems to hav ...
Slide 1
... • Cause current flows that decrease in magnitude with distance • Magnitude of potential dependent upon ...
... • Cause current flows that decrease in magnitude with distance • Magnitude of potential dependent upon ...
m5zn_e06294c55d2e0eb
... PERIPHERAL NERVOUS SYSTEM Spinal Nerves: - Each spinal nerve is connected to the spinal cord by two roots: the anterior root and the posterior root. The anterior root carrying nerve impulses away from the central nervous system ( efferent fibers) go to skeletal muscle and cause them to contract are ...
... PERIPHERAL NERVOUS SYSTEM Spinal Nerves: - Each spinal nerve is connected to the spinal cord by two roots: the anterior root and the posterior root. The anterior root carrying nerve impulses away from the central nervous system ( efferent fibers) go to skeletal muscle and cause them to contract are ...
Neuromuscular junction
A neuromuscular junction (sometimes called a myoneural junction) is a junction between nerve and muscle; it is a chemical synapse formed by the contact between the presynaptic terminal of a motor neuron and the postsynaptic membrane of a muscle fiber. It is at the neuromuscular junction that a motor neuron is able to transmit a signal to the muscle fiber, causing muscle contraction.Muscles require innervation to function—and even just to maintain muscle tone, avoiding atrophy. Synaptic transmission at the neuromuscular junction begins when an action potential reaches the presynaptic terminal of a motor neuron, which activates voltage-dependent calcium channels to allow calcium ions to enter the neuron. Calcium ions bind to sensor proteins (synaptotagmin) on synaptic vesicles, triggering vesicle fusion with the cell membrane and subsequent neurotransmitter release from the motor neuron into the synaptic cleft. In vertebrates, motor neurons release acetylcholine (ACh), a small molecule neurotransmitter, which diffuses across the synaptic cleft and binds to nicotinic acetylcholine receptors (nAChRs) on the cell membrane of the muscle fiber, also known as the sarcolemma. nAChRs are ionotropic receptors, meaning they serve as ligand-gated ion channels. The binding of ACh to the receptor can depolarize the muscle fiber, causing a cascade that eventually results in muscle contraction.Neuromuscular junction diseases can be of genetic and autoimmune origin. Genetic disorders, such as Duchenne muscular dystrophy, can arise from mutated structural proteins that comprise the neuromuscular junction, whereas autoimmune diseases, such as myasthenia gravis, occur when antibodies are produced against nicotinic acetylcholine receptors on the sarcolemma.