Nervous System Review PPt
... Gray Matter vs. White Matter • White matter – Composed of myelinated nerve cell processes, or axons, which connect various gray matter areas (the locations of nerve cell bodies) of the brain to each other and carry nerve impulses between neurons – Forms the bulk of the deep parts of the brain and t ...
... Gray Matter vs. White Matter • White matter – Composed of myelinated nerve cell processes, or axons, which connect various gray matter areas (the locations of nerve cell bodies) of the brain to each other and carry nerve impulses between neurons – Forms the bulk of the deep parts of the brain and t ...
NOTES FOR CHAPTER 13
... * myelin is a lipid substance that insulates and protects neurons * myelin also helps with nerve healing * the disease, multiple sclerosis (MS) develops when the myelin sheath becomes hardened and interferes with nerve conduction - it is an autoimmune disease * leukodystrophy disorders are similar b ...
... * myelin is a lipid substance that insulates and protects neurons * myelin also helps with nerve healing * the disease, multiple sclerosis (MS) develops when the myelin sheath becomes hardened and interferes with nerve conduction - it is an autoimmune disease * leukodystrophy disorders are similar b ...
Nerves and the brain
... Cell body - contains the nucleus and other cell organelles. High level of cellular activity - means there is a large amount of endoplasmic reticulum - secretes protein visible in cytoplasm Dendrites - pick up messages using their extensive branches to increase the surface area of the ‘receiving end’ ...
... Cell body - contains the nucleus and other cell organelles. High level of cellular activity - means there is a large amount of endoplasmic reticulum - secretes protein visible in cytoplasm Dendrites - pick up messages using their extensive branches to increase the surface area of the ‘receiving end’ ...
Slide 1
... • A single neuron may receive input from many synapses. • Neurons “decide” whether to generate an action potential by adding up excitatory and inhibitory input. ...
... • A single neuron may receive input from many synapses. • Neurons “decide” whether to generate an action potential by adding up excitatory and inhibitory input. ...
The Brain
... waste products and assisting in communication with each other. A. Major parts of the neuron 1. Cell Body- soma- main body of the cell- house the nucleus which contains the cell’s genetic material, and carries out the metabolic or life sustaining functions of the cell. 2. Dendrite- fibers that receiv ...
... waste products and assisting in communication with each other. A. Major parts of the neuron 1. Cell Body- soma- main body of the cell- house the nucleus which contains the cell’s genetic material, and carries out the metabolic or life sustaining functions of the cell. 2. Dendrite- fibers that receiv ...
Jan 7, 2015. PASSIVE ELECTRICAL PROPERTIES OF MEMBRANES
... The insulating cell membrane (dielectric) separates two good conductors (the fluids outside and inside the cell), thus forming a capacitor. Because the membrane is so thin (ca. 7.5 nm), the membrane acts as a very good ...
... The insulating cell membrane (dielectric) separates two good conductors (the fluids outside and inside the cell), thus forming a capacitor. Because the membrane is so thin (ca. 7.5 nm), the membrane acts as a very good ...
Chapter 24 Nervous Systems
... inhibit a receiving cell’s activity by decreasing its ability to develop action potentials. A receiving neuron’s membrane may receive signals - that are both excitatory and inhibitory. - from many different sending neurons. The summation of excitation and inhibition determines if a neuron will t ...
... inhibit a receiving cell’s activity by decreasing its ability to develop action potentials. A receiving neuron’s membrane may receive signals - that are both excitatory and inhibitory. - from many different sending neurons. The summation of excitation and inhibition determines if a neuron will t ...
Writing a summary
... Although neurons come in many different shapes and sizes, they are all specialized to receive and transmit information. [adv. clause] Despite their different shapes and sizes, neurons are all specialized to receive and transmit information. [adv. phrase] The different shaped and sized neurons are al ...
... Although neurons come in many different shapes and sizes, they are all specialized to receive and transmit information. [adv. clause] Despite their different shapes and sizes, neurons are all specialized to receive and transmit information. [adv. phrase] The different shaped and sized neurons are al ...
Kuliah4-anatomi2
... muscles or other effector organs. • Central neurons, which in vertebrates greatly outnumber the other types, make all of their input and output connections with other neurons. • The interactions of all these types of neurons form neural circuits that generate an organism's perception of the world an ...
... muscles or other effector organs. • Central neurons, which in vertebrates greatly outnumber the other types, make all of their input and output connections with other neurons. • The interactions of all these types of neurons form neural circuits that generate an organism's perception of the world an ...
The Nervous System crossword
... 1. The peripheral nervous system connects everything to the brain and spinal cord. 3. The cells of the nervous system are called neurones. 4. What is the name of the membrane bound structure found in the body of the cell? [Nucleus] 6. The small space between two nerve cells is called the synaptic cl ...
... 1. The peripheral nervous system connects everything to the brain and spinal cord. 3. The cells of the nervous system are called neurones. 4. What is the name of the membrane bound structure found in the body of the cell? [Nucleus] 6. The small space between two nerve cells is called the synaptic cl ...
Exam 3B key
... d) forebrain and hindbrain. e) central nervous system and peripheral nervous system. 22. Which of the following is a protein neurotransmitter (i.e., a neuropeptide) that functions as a natural analgesic ...
... d) forebrain and hindbrain. e) central nervous system and peripheral nervous system. 22. Which of the following is a protein neurotransmitter (i.e., a neuropeptide) that functions as a natural analgesic ...
(Early Period) - Connectionism
... A glance at its history: ● The 1940s: it was pioneered by neurophysiologist Warren McCulloch and Walter Pitts. They noted that neurons are either ‘firing’ electrochemical impulses down their lengthy projections (axons) towards junctions with other neurons (synapses) or are inactive. ● Hebb’s rule: D ...
... A glance at its history: ● The 1940s: it was pioneered by neurophysiologist Warren McCulloch and Walter Pitts. They noted that neurons are either ‘firing’ electrochemical impulses down their lengthy projections (axons) towards junctions with other neurons (synapses) or are inactive. ● Hebb’s rule: D ...
NERVOUS SYSTEM: NEURAL TISSUE
... – Inters88al environment – Blood‐brain barrier – Structural support – Repairing damaged nervous 8ssue – Neuron development ...
... – Inters88al environment – Blood‐brain barrier – Structural support – Repairing damaged nervous 8ssue – Neuron development ...
Chapter 2: Brain and Behavior
... back out more slowly. Their removal restores the original resting potential. ...
... back out more slowly. Their removal restores the original resting potential. ...
CHAPTER 39 NEURONS AND NERVOUS SYSTEMS
... 1. The central nervous system (spinal cord and brain) is where sensory impulses are received and motor control is initiated. 2. Both the brain and the spinal cord are protected by bone. 3. Both are wrapped in three connective tissue coverings called meninges; meningitis is a disease caused by many d ...
... 1. The central nervous system (spinal cord and brain) is where sensory impulses are received and motor control is initiated. 2. Both the brain and the spinal cord are protected by bone. 3. Both are wrapped in three connective tissue coverings called meninges; meningitis is a disease caused by many d ...
Chapter 4: The Cytology of Neurons
... Sensory neurons convey information about the state of muscle contraction. The cell bodies are round with large diameter (60-120 µm) located in dorsal root ganglia. The pseudo-unipolar neuron bifurcates into two branches from cell body. The peripheral branch projects to muscle. The central branch pro ...
... Sensory neurons convey information about the state of muscle contraction. The cell bodies are round with large diameter (60-120 µm) located in dorsal root ganglia. The pseudo-unipolar neuron bifurcates into two branches from cell body. The peripheral branch projects to muscle. The central branch pro ...
Microsoft Word 97
... Using the key below, for each statement 1-5, choose the most suitable condition to match each statement. Place the letter of that condition in the space provided in front of each statement. Letters A, B and C represent areas where blockages of impulses due to severing or a local anesthetic may occur ...
... Using the key below, for each statement 1-5, choose the most suitable condition to match each statement. Place the letter of that condition in the space provided in front of each statement. Letters A, B and C represent areas where blockages of impulses due to severing or a local anesthetic may occur ...
Neurophysiology Worksheet
... neuron. A myleinated neuron is called white matter while a non-myleinated neuron is called grey matter. The myelin lines up on the neuron like beads. Gaps exist, called nodes of Ranvier where neuron membrane is exposed. Action potentials move across the myelin sheath by jumping from node to node in ...
... neuron. A myleinated neuron is called white matter while a non-myleinated neuron is called grey matter. The myelin lines up on the neuron like beads. Gaps exist, called nodes of Ranvier where neuron membrane is exposed. Action potentials move across the myelin sheath by jumping from node to node in ...
Chapter 3 Class Notes / Biological Foundations
... neurons, (2) a cell body, which serves as the control center for the neuron, and (3) an axon, which transmits messages to neighboring neurons. About 50% of the axons in the nervous system have a fatty coating insulator called the myelin sheath, which increases the speed and accuracy of the nerve imp ...
... neurons, (2) a cell body, which serves as the control center for the neuron, and (3) an axon, which transmits messages to neighboring neurons. About 50% of the axons in the nervous system have a fatty coating insulator called the myelin sheath, which increases the speed and accuracy of the nerve imp ...
Section: Nervous system
... ______ 6. connects all areas of your body to the brain and spinal cord ...
... ______ 6. connects all areas of your body to the brain and spinal cord ...
Hair cells
... damage is most likely to occur Temperature extremes affect the transient receptor potential (TRP) ion channel -Produces depolarization by an inward flow of Na+ and Ca2+, which in turn causes the sensory neuron to fire -Leads to a release of glutamate and an EPSP in neurons in spinal cord, which ulti ...
... damage is most likely to occur Temperature extremes affect the transient receptor potential (TRP) ion channel -Produces depolarization by an inward flow of Na+ and Ca2+, which in turn causes the sensory neuron to fire -Leads to a release of glutamate and an EPSP in neurons in spinal cord, which ulti ...
Biology 30 NERVOUS SYSTEM
... of cell body. They receive information 3) Axon-extension of cytoplasm. Transmit impulse away from the body ...
... of cell body. They receive information 3) Axon-extension of cytoplasm. Transmit impulse away from the body ...
Axon
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An axon (from Greek ἄξων áxōn, axis), also known as a nerve fibre, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. The function of the axon is to transmit information to different neurons, muscles and glands. In certain sensory neurons (pseudounipolar neurons), such as those for touch and warmth, the electrical impulse travels along an axon from the periphery to the cell body, and from the cell body to the spinal cord along another branch of the same axon. Axon dysfunction causes many inherited and acquired neurological disorders which can affect both the peripheral and central neurons.An axon is one of two types of protoplasmic protrusions that extrude from the cell body of a neuron, the other type being dendrites. Axons are distinguished from dendrites by several features, including shape (dendrites often taper while axons usually maintain a constant radius), length (dendrites are restricted to a small region around the cell body while axons can be much longer), and function (dendrites usually receive signals while axons usually transmit them). All of these rules have exceptions, however.Some types of neurons have no axon and transmit signals from their dendrites. No neuron ever has more than one axon; however in invertebrates such as insects or leeches the axon sometimes consists of several regions that function more or less independently of each other. Most axons branch, in some cases very profusely.Axons make contact with other cells—usually other neurons but sometimes muscle or gland cells—at junctions called synapses. At a synapse, the membrane of the axon closely adjoins the membrane of the target cell, and special molecular structures serve to transmit electrical or electrochemical signals across the gap. Some synaptic junctions appear partway along an axon as it extends—these are called en passant (""in passing"") synapses. Other synapses appear as terminals at the ends of axonal branches. A single axon, with all its branches taken together, can innervate multiple parts of the brain and generate thousands of synaptic terminals.