AUTONOMIC REFLEX - Semmelweis University
... 1. may synapse on the postganglionic cells in the paravertebral ganglion at segmental level 2. may enter the synaptic chain and travel rostrally and caudally to a paravertebral ganglion 3. some preganglionic axon pass through the sympathetic trunk and form the splanchnic nerves, these fibers travel ...
... 1. may synapse on the postganglionic cells in the paravertebral ganglion at segmental level 2. may enter the synaptic chain and travel rostrally and caudally to a paravertebral ganglion 3. some preganglionic axon pass through the sympathetic trunk and form the splanchnic nerves, these fibers travel ...
Cellular and Molecul..
... • odorant receptors themselves should exhibit significant diversity and are therefore likely to be encoded by a multigene family • expression of the odorant receptors should be restricted to the olfactory epithelium ...
... • odorant receptors themselves should exhibit significant diversity and are therefore likely to be encoded by a multigene family • expression of the odorant receptors should be restricted to the olfactory epithelium ...
Chapter 48
... terminals Axon – takes signal away from cell body Axon hillock – cell body region where impulse is generated & axon begins Myelin – sheath that insulates axons made of supporting cells - PNS – Schwann cells secrete myelin - CNS – oligodendrocytes secrete myelin Synapse – junction between neurons or ...
... terminals Axon – takes signal away from cell body Axon hillock – cell body region where impulse is generated & axon begins Myelin – sheath that insulates axons made of supporting cells - PNS – Schwann cells secrete myelin - CNS – oligodendrocytes secrete myelin Synapse – junction between neurons or ...
FIGURE LEGENDS FIGURE 22.1 An example of a figure that can
... auditory, and visual systems. Receptors are specialized structures that adopt different shapes depending on their function. In the somatosensory system the receptor is a specialized peripheral element that is associated with the peripheral process of a sensory neuron. In the auditory and visual syst ...
... auditory, and visual systems. Receptors are specialized structures that adopt different shapes depending on their function. In the somatosensory system the receptor is a specialized peripheral element that is associated with the peripheral process of a sensory neuron. In the auditory and visual syst ...
The Nervous System: Neural Tissue
... • Sodium ions are in large concentration along the outside of the cell membrane • Potassium ions are in large concentration along the inside of the cell membrane ...
... • Sodium ions are in large concentration along the outside of the cell membrane • Potassium ions are in large concentration along the inside of the cell membrane ...
Nervous system
... Resting Potential • Sodium ions are in large concentration along the outside of the cell membrane • Potassium ions are in large concentration along the inside of the cell membrane ...
... Resting Potential • Sodium ions are in large concentration along the outside of the cell membrane • Potassium ions are in large concentration along the inside of the cell membrane ...
Neurons and Glia
... tubes that radiate away from the central region. The swollen region containing the cell nucleus has several names that are used interchangeably: cell body, soma (plural: somata), and perikaryon (plural: perikarya). The thin tubes that radiate away {rom the soma are called neurites and are of two typ ...
... tubes that radiate away from the central region. The swollen region containing the cell nucleus has several names that are used interchangeably: cell body, soma (plural: somata), and perikaryon (plural: perikarya). The thin tubes that radiate away {rom the soma are called neurites and are of two typ ...
nervous system notes
... stored serotonin at once – this can cause damage to the axons. Serotonin regulates temp. as well as mood. If body temp. reaches 430C (dancing) the blood starts to coagulate, and death can follow. Ectasy affects memory too. Cannabis. Marijuana – a hallucinogen – (from the dried leaves) and hashish ...
... stored serotonin at once – this can cause damage to the axons. Serotonin regulates temp. as well as mood. If body temp. reaches 430C (dancing) the blood starts to coagulate, and death can follow. Ectasy affects memory too. Cannabis. Marijuana – a hallucinogen – (from the dried leaves) and hashish ...
cell body
... • Allows you to react to a stimulus – Stimulus: change in the environment – Example: hot stove, tripping on a rock… ...
... • Allows you to react to a stimulus – Stimulus: change in the environment – Example: hot stove, tripping on a rock… ...
Physiology Lecture 6
... They are specialized to respond to physical and chemical stimuli, conduct electrochemical impulses, and release chemical regulators. ...
... They are specialized to respond to physical and chemical stimuli, conduct electrochemical impulses, and release chemical regulators. ...
The Human Nervous System
... ganglia are responsible for controlling automatic movements of the body. Where there is a malfunction of the basal ganglia, as happens How can Parkinson’s disease be treated? in Parkinson’s disease, aspects of movement are impaired, resulting in Treatments of Parkinson’s disease include drugs that m ...
... ganglia are responsible for controlling automatic movements of the body. Where there is a malfunction of the basal ganglia, as happens How can Parkinson’s disease be treated? in Parkinson’s disease, aspects of movement are impaired, resulting in Treatments of Parkinson’s disease include drugs that m ...
Chapter 2 - Safford Unified School
... The nervous system is composed of the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains the brain and spinal cord. The PNS consists of the somatic nervous system and the autonomic nervous system. The somatic system conveys information between the CNS and sense or ...
... The nervous system is composed of the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains the brain and spinal cord. The PNS consists of the somatic nervous system and the autonomic nervous system. The somatic system conveys information between the CNS and sense or ...
The Biology of Behavior
... made up of nerve cells that send messages between the central nervous system and all of the other parts of the body ...
... made up of nerve cells that send messages between the central nervous system and all of the other parts of the body ...
Lecture 3
... Evolution favored more complex systems. It is easier to build a complex system with chemical synapses: ...
... Evolution favored more complex systems. It is easier to build a complex system with chemical synapses: ...
Physiology Lecture Outline: Membrane Potential and Neurophysiology
... drop in Tb will significantly slow down neuronal transmission. For example, if a person falls into the very cold water of a frozen over lake, all of their nervous responses will be significantly slowed. 3. Myelination of Axon The myelin sheath that covers some axon is made from the cytoplasm of glia ...
... drop in Tb will significantly slow down neuronal transmission. For example, if a person falls into the very cold water of a frozen over lake, all of their nervous responses will be significantly slowed. 3. Myelination of Axon The myelin sheath that covers some axon is made from the cytoplasm of glia ...
THE NERVOUS SYSTEM - Tamalpais Union High School District
... • Dendrites Cell body Axon Synaptic knobs at axon terminals Effector ...
... • Dendrites Cell body Axon Synaptic knobs at axon terminals Effector ...
HCB Objectives 9
... collection of small pyramidal cells an stellate cells), pyramidal layer (pyramidal cells increasing in size from superficial to deep), inner granular layer (dense collection of stellate cells), ganglionic layer (large pyramidal cells, few stellate cells, and cells of Martinotti), and multiform cell ...
... collection of small pyramidal cells an stellate cells), pyramidal layer (pyramidal cells increasing in size from superficial to deep), inner granular layer (dense collection of stellate cells), ganglionic layer (large pyramidal cells, few stellate cells, and cells of Martinotti), and multiform cell ...
Nervous Systems II PPT
... Afferent sensory neurons carry signals from sensory receptors to one or more “Integrating centers” ...
... Afferent sensory neurons carry signals from sensory receptors to one or more “Integrating centers” ...
The Biology of Mind take
... People with intact brains also show left-right hemispheric differences in mental abilities. A number of brain scan studies show normal individuals engage their right brain when completing a perceptual task and their left brain when carrying out a linguistic task. ...
... People with intact brains also show left-right hemispheric differences in mental abilities. A number of brain scan studies show normal individuals engage their right brain when completing a perceptual task and their left brain when carrying out a linguistic task. ...
The Biology of Mind take 2
... People with intact brains also show left-right hemispheric differences in mental abilities. A number of brain scan studies show normal individuals engage their right brain when completing a perceptual task and their left brain when carrying out a linguistic task. ...
... People with intact brains also show left-right hemispheric differences in mental abilities. A number of brain scan studies show normal individuals engage their right brain when completing a perceptual task and their left brain when carrying out a linguistic task. ...
NERVOUS SYSTEM
... 1. Sensory (Afferent) Nervous System conveys impulses to the CNS from sensory receptors has two sub-divisions: Somatic sensory; conveys information from the skin, muscles joints, and Visceral sensory; conveys information from the viscera (internal organs) 2. Motor (Efferent) Nervous System conveys i ...
... 1. Sensory (Afferent) Nervous System conveys impulses to the CNS from sensory receptors has two sub-divisions: Somatic sensory; conveys information from the skin, muscles joints, and Visceral sensory; conveys information from the viscera (internal organs) 2. Motor (Efferent) Nervous System conveys i ...
Chapter 12 Notes - Las Positas College
... A. The human body contains billions of nondividing neurons or nerve cells. B. Neurons are composed of three main parts: the cell body (soma), dendrites, and an axon. (Figs. 12.4–12.5) 1. The cytoplasm of the cell body contains all the usual organelles and chromatophilic bodies. Most neuronal cell bo ...
... A. The human body contains billions of nondividing neurons or nerve cells. B. Neurons are composed of three main parts: the cell body (soma), dendrites, and an axon. (Figs. 12.4–12.5) 1. The cytoplasm of the cell body contains all the usual organelles and chromatophilic bodies. Most neuronal cell bo ...
The Spinal Cord and Reflexes Notes
... the dorsal roots contain Neurons that carry signals to the CNS from various kinds of Sensory Neurons (Affectors). the ventral roots contain the Axons of Motor Neurons, which are neurons that contact and carry information to the Muscles and Glands (Effectors). ...
... the dorsal roots contain Neurons that carry signals to the CNS from various kinds of Sensory Neurons (Affectors). the ventral roots contain the Axons of Motor Neurons, which are neurons that contact and carry information to the Muscles and Glands (Effectors). ...
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.