Document
... Long, cylindrical process with few branches along its course and multiple terminal branches (telodendrion). Axons originate from axon hillock. Initial segment: free of myelin sheath, receive synapses from other neurons. LM ...
... Long, cylindrical process with few branches along its course and multiple terminal branches (telodendrion). Axons originate from axon hillock. Initial segment: free of myelin sheath, receive synapses from other neurons. LM ...
Exam
... T F 21. Synapses with pre- and postsynaptic densities of comparable size (“symmetrical”) are generally excitatory rather than inhibitory. T F 22. The main blood supply for the cingulate gyrus comes from the middle cerebral artery. T F 23. The posterior cerebral artery supplies blood to the medial pa ...
... T F 21. Synapses with pre- and postsynaptic densities of comparable size (“symmetrical”) are generally excitatory rather than inhibitory. T F 22. The main blood supply for the cingulate gyrus comes from the middle cerebral artery. T F 23. The posterior cerebral artery supplies blood to the medial pa ...
The Nervous System
... • The nervous system is composed of neurons and supporting cells. • Membrane potentials arise from differences in ion concentrations between a cell’s contents and the extracellular fluid. • An action potential is an all-or-none change in the membrane potential. • Action potentials travel along an ax ...
... • The nervous system is composed of neurons and supporting cells. • Membrane potentials arise from differences in ion concentrations between a cell’s contents and the extracellular fluid. • An action potential is an all-or-none change in the membrane potential. • Action potentials travel along an ax ...
The Nervous System
... changes in brain function. Physical effects include increased body temperature, heart rate, and blood pressure. Psychological effects include perceptual and thought distortions, hallucinations, delusions, and rapid mood swings. ...
... changes in brain function. Physical effects include increased body temperature, heart rate, and blood pressure. Psychological effects include perceptual and thought distortions, hallucinations, delusions, and rapid mood swings. ...
Do Now: Review the Human Spark
... – Covered with myelin sheath • Protective coating (Schwann cells) • Nodes of Ranvier are gaps the in the sheath • Impulses travel faster (jump from gap to gap) ...
... – Covered with myelin sheath • Protective coating (Schwann cells) • Nodes of Ranvier are gaps the in the sheath • Impulses travel faster (jump from gap to gap) ...
O rganization of the nervous system To go toward
... Neurons = nerve cells (do not routinely undergo cell division after birth) Cells specialized to transmit messages ...
... Neurons = nerve cells (do not routinely undergo cell division after birth) Cells specialized to transmit messages ...
Compound Action Potential, CAP
... 1. Focal demyelination (FD): There is focal slowing of conduction across the area of demyelination. If the segment is long it is easy to detect; however, if the segment is short, one needs special techniques such as “inching” study. 2. Axon loss: The portion below the area of axon loss shows no cond ...
... 1. Focal demyelination (FD): There is focal slowing of conduction across the area of demyelination. If the segment is long it is easy to detect; however, if the segment is short, one needs special techniques such as “inching” study. 2. Axon loss: The portion below the area of axon loss shows no cond ...
New Title
... The outside of the cell has a net positive charge. This charge difference across the cell membrane is called the resting potential of the neuron. When a resting neuron is stimulated by another neuron or by the environment, an impulse starts. Positive ions flow into the neuron making the inside of th ...
... The outside of the cell has a net positive charge. This charge difference across the cell membrane is called the resting potential of the neuron. When a resting neuron is stimulated by another neuron or by the environment, an impulse starts. Positive ions flow into the neuron making the inside of th ...
Slide 1 - Teachers TryScience
... Neuroglia (Glia ) nerve glue cells Astrocytes: • type of glial cell • 50% of nerve tissue • protect neurons from harmful substances in blood ...
... Neuroglia (Glia ) nerve glue cells Astrocytes: • type of glial cell • 50% of nerve tissue • protect neurons from harmful substances in blood ...
What is the Nervous System?
... Complex communication network – how your body/brain communicate ...
... Complex communication network – how your body/brain communicate ...
1. 2. a) Explain the compositions of white matter and gray matter
... neurons and acts as a signal pathway for the gray matter regions of the central nervous system. Gray matter consists of glial cells and unmyelinated axons. It contains neuronal cell bodies. b) Explain shortly the structure of a neuron. ...
... neurons and acts as a signal pathway for the gray matter regions of the central nervous system. Gray matter consists of glial cells and unmyelinated axons. It contains neuronal cell bodies. b) Explain shortly the structure of a neuron. ...
NEUROTRANSMITTER TEST KIT (13 vials) - Life
... epileptics have increased levels of glutamic acid; part of the acute reaction to withdrawal from drug addiction includes increased production of glutamate. Also an amino acid. Can be synthesised from other amino acids (serine and threonine); acts as an inhibitory neurotransmitter in the central nerv ...
... epileptics have increased levels of glutamic acid; part of the acute reaction to withdrawal from drug addiction includes increased production of glutamate. Also an amino acid. Can be synthesised from other amino acids (serine and threonine); acts as an inhibitory neurotransmitter in the central nerv ...
Document
... The aim of PRF is done by delivering short bursts of energy (20 milliseconds) twice per second, followed by a quiet phase (lasting 480 milliseconds) during which no current is applied. This approach allows for heat dissipation, thus keeping the tissue temperature lower than the neurodestructive thre ...
... The aim of PRF is done by delivering short bursts of energy (20 milliseconds) twice per second, followed by a quiet phase (lasting 480 milliseconds) during which no current is applied. This approach allows for heat dissipation, thus keeping the tissue temperature lower than the neurodestructive thre ...
Nervous System Graphics - Beacon Learning Center
... 2. What is a neuron? A nerve cell is called a neuron. 3. How do the neurons make a network? They connect to make a path from all the parts to the spinal cord and brain. 4. What is the spinal cord made of? Neurons make nerve tissue and the spinal cord is nerve tissue, so neurons make the spinal cord. ...
... 2. What is a neuron? A nerve cell is called a neuron. 3. How do the neurons make a network? They connect to make a path from all the parts to the spinal cord and brain. 4. What is the spinal cord made of? Neurons make nerve tissue and the spinal cord is nerve tissue, so neurons make the spinal cord. ...
The Nervous System
... The nervous system can be damaged by injury and disease. The most common serious problem with the nervous system is a stroke. A person may have a stroke if the blood supply to part of the brain is cut off. Then the nerve cells in that area die. The person then may not be able to do the things that a ...
... The nervous system can be damaged by injury and disease. The most common serious problem with the nervous system is a stroke. A person may have a stroke if the blood supply to part of the brain is cut off. Then the nerve cells in that area die. The person then may not be able to do the things that a ...
Nervous and Endocrine Systems
... A disorder in which nerve cell activity in the brain is disturbed, causing seizures Can be caused by genetics or a brain ...
... A disorder in which nerve cell activity in the brain is disturbed, causing seizures Can be caused by genetics or a brain ...
SVHS ADV BIOLOGY NAME: 9th ed. Tortora PERIOD: 1 2 3 4 5 6
... The two main subdivisions of the nervous system are _________________________________ and __________________________________ ...
... The two main subdivisions of the nervous system are _________________________________ and __________________________________ ...
Nervous system - Yr-9-Health
... Myelin – an insulating lining that covers the nerves and increases neural transmission speeds. Multiple Sclerosis is a disease of the myelin sheath that may cause many different symptoms. ...
... Myelin – an insulating lining that covers the nerves and increases neural transmission speeds. Multiple Sclerosis is a disease of the myelin sheath that may cause many different symptoms. ...
Overview
... Problems of the Nervous System (cont’d.) Some nervous system disorders are not related to injuries: Meningitis is an infection of the meninges. A brain tumor is an abnormal growth of tissue that kills normal neurons around it. Epilepsy causes a person to have seizures. Multiple sclerosis da ...
... Problems of the Nervous System (cont’d.) Some nervous system disorders are not related to injuries: Meningitis is an infection of the meninges. A brain tumor is an abnormal growth of tissue that kills normal neurons around it. Epilepsy causes a person to have seizures. Multiple sclerosis da ...
Ch. 21.1 Nervous Lecture
... D. Synaptic Gap- The gap in between neurons that the impulse must cross to relay the message. 1. Chemicals called neurotransmitters are released across the gap and picked up by the next neuron 2. Spray bottle demo ...
... D. Synaptic Gap- The gap in between neurons that the impulse must cross to relay the message. 1. Chemicals called neurotransmitters are released across the gap and picked up by the next neuron 2. Spray bottle demo ...
peripheral nervous system
... -In the CNS, myelinated axons form white matter -Dendrites/cell bodies form gray matter -In the PNS, myelinated axons are bundled to form nerves ...
... -In the CNS, myelinated axons form white matter -Dendrites/cell bodies form gray matter -In the PNS, myelinated axons are bundled to form nerves ...
The Nervous System - Ridgewood High School
... • The positive charge carried by the Na+ spreads as a wave of depolarization through the cytoplasm (much like the ripples created by a stone tossed into a pond). • As the Na+ drifts, some of it will leak back out of the ...
... • The positive charge carried by the Na+ spreads as a wave of depolarization through the cytoplasm (much like the ripples created by a stone tossed into a pond). • As the Na+ drifts, some of it will leak back out of the ...
Chapter 17: Nervous System - Johnston Community College
... nerve impulses carried to interneurons in the spinal cord. Next, interneurons signal motor neurons which conduct nerve impulses to a skeletal muscle that contracts, giving the response to the stimulus. Pain is not felt until the brain receives nerve impulses. ...
... nerve impulses carried to interneurons in the spinal cord. Next, interneurons signal motor neurons which conduct nerve impulses to a skeletal muscle that contracts, giving the response to the stimulus. Pain is not felt until the brain receives nerve impulses. ...