Organization of Nervous System
... In a given case, the neuron that is sending the signal is called the presynaptic neuron. It is the neuron before the synapse. The neuron receiving the message is called the postsynaptic neuron. It comes after the ...
... In a given case, the neuron that is sending the signal is called the presynaptic neuron. It is the neuron before the synapse. The neuron receiving the message is called the postsynaptic neuron. It comes after the ...
Unit 2: Nervous System
... • Spinal cord = communication highway • All nerves communicate through Spine ...
... • Spinal cord = communication highway • All nerves communicate through Spine ...
Cells of the Nervous System
... rich in myelin; create myelin sheaths in CNS • Schwann cells: similar to function of oligodendrocytes, but in PNS; can guide axonal regeneration • Microglia: involved in response to injury or disease • Astrocytes: largest glia; starshaped; many functions ...
... rich in myelin; create myelin sheaths in CNS • Schwann cells: similar to function of oligodendrocytes, but in PNS; can guide axonal regeneration • Microglia: involved in response to injury or disease • Astrocytes: largest glia; starshaped; many functions ...
53 XIX BLY 122 Lecture Notes (O`Brien)
... a. All-or-none change in membrane voltage at plasma membrane b. Inflow of sodium ions (Na+) is followed by outflow of potassium ions (K+) B. Synapse 1. Connection between two neurons 2. Electrical signal from one neuron is converted to a chemical signal = neurotransmitter 3. Neurotransmitters cross ...
... a. All-or-none change in membrane voltage at plasma membrane b. Inflow of sodium ions (Na+) is followed by outflow of potassium ions (K+) B. Synapse 1. Connection between two neurons 2. Electrical signal from one neuron is converted to a chemical signal = neurotransmitter 3. Neurotransmitters cross ...
Ch. 3 S. 1
... that produced the message. Sensory neurons are nerve cells that carry information received by the senses to the central nervous system. ________________ neurons, on the other hand, are nerve cells that carry information from the central nervous system to the muscles and the glands and influence thei ...
... that produced the message. Sensory neurons are nerve cells that carry information received by the senses to the central nervous system. ________________ neurons, on the other hand, are nerve cells that carry information from the central nervous system to the muscles and the glands and influence thei ...
GENERAL CONCEPTS OF NERVOUS SYSTEM
... Motor output. – The activation of muscles or glands (typically via the release of ...
... Motor output. – The activation of muscles or glands (typically via the release of ...
File
... Nervous System Effect a response by activating muscles or glands. The response is called motor output ...
... Nervous System Effect a response by activating muscles or glands. The response is called motor output ...
Nervous System Note Packet
... a. symptoms include fever, headache, light and sound sensitivity, and neck stiffness. b. How to care for/prevent these problems: ...
... a. symptoms include fever, headache, light and sound sensitivity, and neck stiffness. b. How to care for/prevent these problems: ...
The Nervous System
... • Receives sensory signals and sends them up to higher centers • Receives motor signals and sends them to the spinal cord ...
... • Receives sensory signals and sends them up to higher centers • Receives motor signals and sends them to the spinal cord ...
Human Nervous System
... contain the long dendrites of sensory neurons; transmit impulses away from receptors to the spinal cord and brain motor nerves contain the long axons of motor neurons; transmit impulses from the central nervous system to the effectors ...
... contain the long dendrites of sensory neurons; transmit impulses away from receptors to the spinal cord and brain motor nerves contain the long axons of motor neurons; transmit impulses from the central nervous system to the effectors ...
The Nervous System
... Characteristics of Neurons 1) Neurons can be stimulated: they react to chemical signals by transforming them into electrical signals. 2) Neurons are conductive: they transmit nerve impulses to other cells. 3) Neurons are needy: they require great amounts of glucose and oxygen to function (20% of bo ...
... Characteristics of Neurons 1) Neurons can be stimulated: they react to chemical signals by transforming them into electrical signals. 2) Neurons are conductive: they transmit nerve impulses to other cells. 3) Neurons are needy: they require great amounts of glucose and oxygen to function (20% of bo ...
FinalStudyGuide
... What is the all or none response? Does it occur with muscular contraction? With nerve impulses? Which muscle type causes peristalsis? Nervous How do motor neurons interact with the motor end plate of a muscle to initiate a muscle contraction? What are the functions of the nervous system (sen ...
... What is the all or none response? Does it occur with muscular contraction? With nerve impulses? Which muscle type causes peristalsis? Nervous How do motor neurons interact with the motor end plate of a muscle to initiate a muscle contraction? What are the functions of the nervous system (sen ...
Ch02
... • Neurotransmitters: chemicals that affect the electrical signal of the receiving neuron – Excitatory: increases chance neuron will fire – Inhibitory: decreases chance neuron will fire ...
... • Neurotransmitters: chemicals that affect the electrical signal of the receiving neuron – Excitatory: increases chance neuron will fire – Inhibitory: decreases chance neuron will fire ...
The Nervous System
... a head. Although lacking a brain or either nervous system (CNS or PNS) nerve nets are capable of some complex behavior. ...
... a head. Although lacking a brain or either nervous system (CNS or PNS) nerve nets are capable of some complex behavior. ...
EXPLORING PSYCHOLOGY David Myers The Biology of Mind
... •After the signal passes through the gap, what happens to the neurotransmitter? • _____________, Or is broken down by an enzyme •So that the neuron is ready for another signal to cross the synaptic cleft Nervous System ...
... •After the signal passes through the gap, what happens to the neurotransmitter? • _____________, Or is broken down by an enzyme •So that the neuron is ready for another signal to cross the synaptic cleft Nervous System ...
Nervous System Notes
... knob, causing release of calcium ions to diffuse into the knob Increased calcium concentrations trigger the release of neurotransmitters via exocytosis Neurotransmitters diffuse across the synaptic cleft and bind to receptor molecules causing ion channels to open This causes postsynaptic poten ...
... knob, causing release of calcium ions to diffuse into the knob Increased calcium concentrations trigger the release of neurotransmitters via exocytosis Neurotransmitters diffuse across the synaptic cleft and bind to receptor molecules causing ion channels to open This causes postsynaptic poten ...
Nervous System - cloudfront.net
... tasted, and touched with the sensory neurons into responses that the body recognizes. This process is accomplished in the brain. motor output– Once your brain has interpreted all that has been sent by using any of the senses, then your brain sends a message through neurons to muscle or other cells ...
... tasted, and touched with the sensory neurons into responses that the body recognizes. This process is accomplished in the brain. motor output– Once your brain has interpreted all that has been sent by using any of the senses, then your brain sends a message through neurons to muscle or other cells ...
Brain Notes - Cloudfront.net
... released into the synaptic cleft (an extremely tiny gap between neurons), where they then move to the next neuron and attach themselves to locations called receptor sites. The result is an initiation of electrical current that moves through that neuron toward the next one. After the neurotransmitter ...
... released into the synaptic cleft (an extremely tiny gap between neurons), where they then move to the next neuron and attach themselves to locations called receptor sites. The result is an initiation of electrical current that moves through that neuron toward the next one. After the neurotransmitter ...
Pt2Localization - MemoryAndCognition
... These are from a specific study. Neuron A responds when the stimulus is ON. Neuron B responds when the stimulus is OFF. Neuron C responds to changes in the stimulus. ...
... These are from a specific study. Neuron A responds when the stimulus is ON. Neuron B responds when the stimulus is OFF. Neuron C responds to changes in the stimulus. ...
Serotonin, also known as 5-HT (5
... found at the synapses of certain neurons. That is, it is released by the tip of one stimulated neuron, and recognized by an adjacent neuron, causing it to fire and so on. In this way, the nerve impulse is propagated throughout the nervous system. Note that after a nerve fires at a synapse, the neuro ...
... found at the synapses of certain neurons. That is, it is released by the tip of one stimulated neuron, and recognized by an adjacent neuron, causing it to fire and so on. In this way, the nerve impulse is propagated throughout the nervous system. Note that after a nerve fires at a synapse, the neuro ...
Chapter 9
... 1. Name the 2 major divisions of the nervous system. What (structures/organs) makes up each system? Name the subdivisions of the PNS. 2. What is the main cell type of the nervous system? Describe the anatomy of this cell. What is the function of dendrites and axons? Where do impulses arise from on a ...
... 1. Name the 2 major divisions of the nervous system. What (structures/organs) makes up each system? Name the subdivisions of the PNS. 2. What is the main cell type of the nervous system? Describe the anatomy of this cell. What is the function of dendrites and axons? Where do impulses arise from on a ...
ACP Level 2 Lesson Twelve
... The Autonomic System: This is broken down into the sympathetic and theparasympathetic systems. This will be covered more in depth later in this lesson. By now, you should have a clear understanding that the brain sends out its messages to the body and it reacts to changes by triggering hormones. The ...
... The Autonomic System: This is broken down into the sympathetic and theparasympathetic systems. This will be covered more in depth later in this lesson. By now, you should have a clear understanding that the brain sends out its messages to the body and it reacts to changes by triggering hormones. The ...
Biology 12 - The Nervous System Study Guide
... 24. How do neuro-poisons such as strychnine and nerve gas work? What are the symptoms of exposure? 25. How do narcotics such as heroin and morphine work? 26. Explain the biochemical events that occur when an impulse is transmitted through a reflex arc. Begin with the opening of the sodium gates in a ...
... 24. How do neuro-poisons such as strychnine and nerve gas work? What are the symptoms of exposure? 25. How do narcotics such as heroin and morphine work? 26. Explain the biochemical events that occur when an impulse is transmitted through a reflex arc. Begin with the opening of the sodium gates in a ...
Chapter Two
... What puts us at a major advantage over other animals which puts us at the top of the food chain? ...
... What puts us at a major advantage over other animals which puts us at the top of the food chain? ...
Neurotoxin
Neurotoxins are substances that are poisonous or destructive to nerve tissue. Neurotoxins are an extensive class of exogenous chemical neurological insults that can adversely affect function in both developing and mature nervous tissue. The term can also be used to classify endogenous compounds, which, when abnormally contact, can prove neurologically toxic. Though neurotoxins are often neurologically destructive, their ability to specifically target neural components is important in the study of nervous systems. Common examples of neurotoxins include lead, ethanol (drinking alcohol), Manganese glutamate, nitric oxide (NO), botulinum toxin (e.g. Botox), tetanus toxin, and tetrodotoxin. Some substances such as nitric oxide and glutamate are in fact essential for proper function of the body and only exert neurotoxic effects at excessive concentrations.Neurotoxins inhibit neuron control over ion concentrations across the cell membrane, or communication between neurons across a synapse. Local pathology of neurotoxin exposure often includes neuron excitotoxicity or apoptosis but can also include glial cell damage. Macroscopic manifestations of neurotoxin exposure can include widespread central nervous system damage such as intellectual disability, persistent memory impairments, epilepsy, and dementia. Additionally, neurotoxin-mediated peripheral nervous system damage such as neuropathy or myopathy is common. Support has been shown for a number of treatments aimed at attenuating neurotoxin-mediated injury, such as antioxidant, and antitoxin administration.