Biology and Behavior
... 3. The speed of an action potential depends on the thickness of the axon and on the presence of myelin, a white, fatty substance that speeds up action potentials. Synapses and Communication Between Neurons 1. At the axon end the action potential causes bag-like vesicles to release stored chemicals c ...
... 3. The speed of an action potential depends on the thickness of the axon and on the presence of myelin, a white, fatty substance that speeds up action potentials. Synapses and Communication Between Neurons 1. At the axon end the action potential causes bag-like vesicles to release stored chemicals c ...
Nervous System Chap49
... 30. Arousal and Sleep 31. The brainstem and cerebrum control arousal and sleep 32. The core of the brainstem has a diffuse network of neurons called the reticular formation 33. These neurons control the timing of sleep periods characterized by rapid eye movements (REMs) and by vivid dreams. 34. Slee ...
... 30. Arousal and Sleep 31. The brainstem and cerebrum control arousal and sleep 32. The core of the brainstem has a diffuse network of neurons called the reticular formation 33. These neurons control the timing of sleep periods characterized by rapid eye movements (REMs) and by vivid dreams. 34. Slee ...
The Nervous System
... • All of the nerves that are not a part of the central nervous system. • Somatic nervous System - regulates activities that are under conscious control (muscles) and pain reflexes. • Autonomic Nervous System – regulates activities that are automatic or involuntary. • Ex: heart rate, blood flow, musc ...
... • All of the nerves that are not a part of the central nervous system. • Somatic nervous System - regulates activities that are under conscious control (muscles) and pain reflexes. • Autonomic Nervous System – regulates activities that are automatic or involuntary. • Ex: heart rate, blood flow, musc ...
Nervous System II: Development & Plasticity
... Why is transdifferentiation important? • If we can induce transdifferentiation in the nervous system from neuroglia into neurons, then we can possibly relieve neurodegenerative diseases such as: – Alzheimer’s Disease – Parkinson’s Disease – Huntington’s Disease – Any other neurodegenerative disease ...
... Why is transdifferentiation important? • If we can induce transdifferentiation in the nervous system from neuroglia into neurons, then we can possibly relieve neurodegenerative diseases such as: – Alzheimer’s Disease – Parkinson’s Disease – Huntington’s Disease – Any other neurodegenerative disease ...
What are Neurons
... but most of these die within weeks. Previously it had been believed that we are born with a set number of neurons. ...
... but most of these die within weeks. Previously it had been believed that we are born with a set number of neurons. ...
I can: State that the CNS is made up of the brain and the spinal cord
... Describe examples of reflex actions, for example the pupil of the eye becoming smaller in bright light to protect the sensitive cells at the back of the eye from damage ...
... Describe examples of reflex actions, for example the pupil of the eye becoming smaller in bright light to protect the sensitive cells at the back of the eye from damage ...
Peripheral nervous system
... Is a part of the peripheral nervous system It consists of parallel bundles of axons (Some myelinated & some not) enclosed by connective tissue ...
... Is a part of the peripheral nervous system It consists of parallel bundles of axons (Some myelinated & some not) enclosed by connective tissue ...
T/F
... Melatonin: Secreted by the pineal gland, helps regulate daily biological rhythms and promotes sleep (seasonal depression). ...
... Melatonin: Secreted by the pineal gland, helps regulate daily biological rhythms and promotes sleep (seasonal depression). ...
11 - Dr. Jerry Cronin
... • GABA and glycine usually inhibitory • Glutamate usually excitatory • Acetylcholine and NE bind to at least two receptor types with opposite effects – ACh excitatory at neuromuscular junctions in skeletal ...
... • GABA and glycine usually inhibitory • Glutamate usually excitatory • Acetylcholine and NE bind to at least two receptor types with opposite effects – ACh excitatory at neuromuscular junctions in skeletal ...
Nervous system notes - FISD Teacher Web Sites
... _____________________ - the basic structural unit of the nervous system Consists of: o _______________ - contains the nucleus o _______________ - nerve fibers (carries impulses ___________ the cell body) o _______________ - single nerve fiber (carries impulses ___________ from the cell body) The N ...
... _____________________ - the basic structural unit of the nervous system Consists of: o _______________ - contains the nucleus o _______________ - nerve fibers (carries impulses ___________ the cell body) o _______________ - single nerve fiber (carries impulses ___________ from the cell body) The N ...
Saladin 5e Extended Outline
... 4. Neuron structure varies, and they are classified according to the number of processes extending from the stroma. (Fig. 12.5) a. Multipolar neurons are those with one axon and multiple dendrites; they are the most common type. b. Bipolar neurons have one axon and one dendrite; examples include olf ...
... 4. Neuron structure varies, and they are classified according to the number of processes extending from the stroma. (Fig. 12.5) a. Multipolar neurons are those with one axon and multiple dendrites; they are the most common type. b. Bipolar neurons have one axon and one dendrite; examples include olf ...
NerveImpulse
... types of cells are the glial (GLEE-uhl) cells. The glial cells help the neurons do their jobs. You have already learned about one type of glial cell, the astrocytes that help form the blood-brain barrier. Neurons come in many forms, but they all have certain basic parts. Each neuron has a cell body, ...
... types of cells are the glial (GLEE-uhl) cells. The glial cells help the neurons do their jobs. You have already learned about one type of glial cell, the astrocytes that help form the blood-brain barrier. Neurons come in many forms, but they all have certain basic parts. Each neuron has a cell body, ...
Chapter 13 Review Question Answers
... combination prevents inactivation of levodopa to 3-O-methyldopa (3OMD). This metabolite may block uptake of levodopa into the brain. Ch. 13 Review Question Answers ...
... combination prevents inactivation of levodopa to 3-O-methyldopa (3OMD). This metabolite may block uptake of levodopa into the brain. Ch. 13 Review Question Answers ...
The Central Nervous System (outline, introduction)
... information to each cell, neurons utilise electrical impulses to communicate and activate adjacent cells. To explain how this process works we first need to review a few basics of electricity. Firstly, some molecules need to be net negatively charged (due to an abundance of electrons) and others net ...
... information to each cell, neurons utilise electrical impulses to communicate and activate adjacent cells. To explain how this process works we first need to review a few basics of electricity. Firstly, some molecules need to be net negatively charged (due to an abundance of electrons) and others net ...
Introduction
... •Neurons link together to form neural circuits which perform special tasks. Many of these are reflexes. •Signaling within these circuits gives rise to higher cognitive functions, such as thinking. •Since circuits are needed for even the most basic function, it has been suggested that the functional ...
... •Neurons link together to form neural circuits which perform special tasks. Many of these are reflexes. •Signaling within these circuits gives rise to higher cognitive functions, such as thinking. •Since circuits are needed for even the most basic function, it has been suggested that the functional ...
Chapter Two - CogConfluence
... Pumps are very important because they increase the electrical potential energy across the cell. This is equivalent to pushing a rollercoaster back up the tracks, giving it more potential energy for later. This exchange of potassium and sodium leads to the cytosol having fewer cations than the extrac ...
... Pumps are very important because they increase the electrical potential energy across the cell. This is equivalent to pushing a rollercoaster back up the tracks, giving it more potential energy for later. This exchange of potassium and sodium leads to the cytosol having fewer cations than the extrac ...
VI. The vertebrate nervous system is a hierarchy of structural and
... • The undershoot phase is a time when the membrane potential is temporarily more negative than the resting state (hyperpolarized); sodium channels remain closed but potassium channels remain open since the inactivation gates have not had time to respond to repolarization of the membrane. A refractor ...
... • The undershoot phase is a time when the membrane potential is temporarily more negative than the resting state (hyperpolarized); sodium channels remain closed but potassium channels remain open since the inactivation gates have not had time to respond to repolarization of the membrane. A refractor ...
Lecture #13 – Animal Nervous Systems
... • Form the myelin sheath around axons • Cells are rectangular and tile-shaped, wrapped spirally around the axons • High lipid content insulates the axon – prevents electrical signals from escaping • Gaps between the cells (Nodes of Ranvier) speed up signal transmission ...
... • Form the myelin sheath around axons • Cells are rectangular and tile-shaped, wrapped spirally around the axons • High lipid content insulates the axon – prevents electrical signals from escaping • Gaps between the cells (Nodes of Ranvier) speed up signal transmission ...
Chapter 3 Section 2 - 6th
... 1. central nervous system- consists of brain and spinal cord 2. peripheral nervous system- made up of nerve cells that send messages between the central nervous system and all the other parts of the body neurons- nerve cells that run through our entire bodies and communicate with each other Componen ...
... 1. central nervous system- consists of brain and spinal cord 2. peripheral nervous system- made up of nerve cells that send messages between the central nervous system and all the other parts of the body neurons- nerve cells that run through our entire bodies and communicate with each other Componen ...
Nerve tissue
... acetylcholine from the synaptic vesicles. This neurotransmitter causes a local increase in the permeability of the sarcolemma. The process is propagated to the rest of the sarcolemma, including the T tubules, and is transferred to the SR. The increase of permeability in this organelle liberates calc ...
... acetylcholine from the synaptic vesicles. This neurotransmitter causes a local increase in the permeability of the sarcolemma. The process is propagated to the rest of the sarcolemma, including the T tubules, and is transferred to the SR. The increase of permeability in this organelle liberates calc ...
How your brain and nervous system work
... • Recall that the gap between neurones is called a synapse. • Describe how an impulse triggers the release of a transmitter substance in a synapse and how it diffuses across to bind with receptor molecules in the membrane of the next neurone causing the impulse to continue. ...
... • Recall that the gap between neurones is called a synapse. • Describe how an impulse triggers the release of a transmitter substance in a synapse and how it diffuses across to bind with receptor molecules in the membrane of the next neurone causing the impulse to continue. ...
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.