Chapter 2 - Biological Basis of Behavior
... pick up the phone? Every time a stimulus—such as a ringing telephone—is detected, the body's neurons send a nerve impulse through the nervous system. ...
... pick up the phone? Every time a stimulus—such as a ringing telephone—is detected, the body's neurons send a nerve impulse through the nervous system. ...
Bidirectional propagation of Action potentials
... Signal propagation can be described uniform for neurons, regardsless of different neuron shapes and functions, in a model neuron. A signal travelling through the neuron can be seen as a linkage between four components. A input component, a trigger component, a long-distance component and a secretory ...
... Signal propagation can be described uniform for neurons, regardsless of different neuron shapes and functions, in a model neuron. A signal travelling through the neuron can be seen as a linkage between four components. A input component, a trigger component, a long-distance component and a secretory ...
What is the cause of the changes in membrane potential during an
... Components within the compound action potential • Refractory period/Faithfulness of conduction ...
... Components within the compound action potential • Refractory period/Faithfulness of conduction ...
CHAPTER 4: Physical, Motor, and Sensory Development
... Gray matter consists of nerve cell bodies, which are grayish in color. Kinesthetic perception is the sensation of position, movement, and tension in parts of the body perceived through the nerves in the muscles, tendons, and joints. Limbic system consists of the structures of the brain involved in e ...
... Gray matter consists of nerve cell bodies, which are grayish in color. Kinesthetic perception is the sensation of position, movement, and tension in parts of the body perceived through the nerves in the muscles, tendons, and joints. Limbic system consists of the structures of the brain involved in e ...
What is the Nervous System?
... the olfactory (smell) area. • Unipolar neurons have one process extending from the cell body. The one process divides with one part acting as an axon and the other part functioning as dendrite. These are seen in the spinal cord. The Peripheral nervous system The Peripheral nervous system is made up ...
... the olfactory (smell) area. • Unipolar neurons have one process extending from the cell body. The one process divides with one part acting as an axon and the other part functioning as dendrite. These are seen in the spinal cord. The Peripheral nervous system The Peripheral nervous system is made up ...
Placebo
... Nociceptive neuron stimulated through compression, heat, or chemical irritation in periphery Nociceptive neuron synapses on projection neurons and interneuron networks in the dorsal horn ...
... Nociceptive neuron stimulated through compression, heat, or chemical irritation in periphery Nociceptive neuron synapses on projection neurons and interneuron networks in the dorsal horn ...
Diagrams - whsanatomy
... o Epineurium- tough fibrous sheath around a nerve o Ganglia Contain neuron cell bodies associated with nerves Dorsal root ganglia (sensory, somatic) Autonomic ganglia (motor, visceral) o Regeneration of nerve fibers Mature neurons are amitotic If the soma of a damaged nerve is intact, axon ...
... o Epineurium- tough fibrous sheath around a nerve o Ganglia Contain neuron cell bodies associated with nerves Dorsal root ganglia (sensory, somatic) Autonomic ganglia (motor, visceral) o Regeneration of nerve fibers Mature neurons are amitotic If the soma of a damaged nerve is intact, axon ...
Bio 12 - Test Review..
... A motor neuron acts in an opposite fashion and sends information away from the body, this is known as. ...
... A motor neuron acts in an opposite fashion and sends information away from the body, this is known as. ...
Chapter 6 The peripheral nervous system Unit
... Transmission of nerve impulses The message that travels along a nerve fibre is called a nerve impulse. Nerve impulses are transmitted very quickly so that the body is able to respond rapidly to any change in the internal or external environment. A nerve impulse is an electrochemical change that trav ...
... Transmission of nerve impulses The message that travels along a nerve fibre is called a nerve impulse. Nerve impulses are transmitted very quickly so that the body is able to respond rapidly to any change in the internal or external environment. A nerve impulse is an electrochemical change that trav ...
Prelab 3 Nerve
... brain they carry with them pia-glia tissues, which form a cuff around the vessel. At the capillary level, only processes of glial cells (astrocytes and oligodendroglia) surround the basement membrane of the capillary endothelium. The capillaries of the CNS are distinctive structurally and functional ...
... brain they carry with them pia-glia tissues, which form a cuff around the vessel. At the capillary level, only processes of glial cells (astrocytes and oligodendroglia) surround the basement membrane of the capillary endothelium. The capillaries of the CNS are distinctive structurally and functional ...
Document
... b. The choline is then taken up by the axon terminal and used to make more ACh 2. What happens in postsynaptic cell? a. Binding to receptor initiates release of a “second messenger” into the cytoplasm of the postsynaptic cell. This is most often Ca ion, cyclic AMP (= cAMP), or cyclic GMP (= cGMP). b ...
... b. The choline is then taken up by the axon terminal and used to make more ACh 2. What happens in postsynaptic cell? a. Binding to receptor initiates release of a “second messenger” into the cytoplasm of the postsynaptic cell. This is most often Ca ion, cyclic AMP (= cAMP), or cyclic GMP (= cGMP). b ...
Chapter 13: Peripheral Nervous System and Reflexes
... I. Sensory: Nerves that carry impulses only toward the CNS. Also known as afferent nerves. II. Motor: Nerves that carry impulses only away from the CNS. Also known as efferent nerves. III. Mixed: Nerves containing both sensory and motor fibers and transmitting impulses to and from the CNS. ...
... I. Sensory: Nerves that carry impulses only toward the CNS. Also known as afferent nerves. II. Motor: Nerves that carry impulses only away from the CNS. Also known as efferent nerves. III. Mixed: Nerves containing both sensory and motor fibers and transmitting impulses to and from the CNS. ...
48_Lectures_PPT
... • The vast majority of synapses are chemical synapses • In a chemical synapse, a presynaptic neuron releases chemical neurotransmitters stored in the synaptic terminal ...
... • The vast majority of synapses are chemical synapses • In a chemical synapse, a presynaptic neuron releases chemical neurotransmitters stored in the synaptic terminal ...
The Nervous System
... are under conscious control (muscles) and pain reflexes. • Autonomic Nervous System – regulates activities that are automatic or involuntary. • Ex: heart rate, blood flow, muscles of digestive system ...
... are under conscious control (muscles) and pain reflexes. • Autonomic Nervous System – regulates activities that are automatic or involuntary. • Ex: heart rate, blood flow, muscles of digestive system ...
semicircular canals
... 1. Specialized sensory cell (receptor) detects a physical or chemical change. 2. The physical or chemical change causes action potentials in sensory neurons. 3. Sensory neurons carry action potentials through cranial nerves or spinal nerves to the CNS. 4. Typically the sensory information is carried ...
... 1. Specialized sensory cell (receptor) detects a physical or chemical change. 2. The physical or chemical change causes action potentials in sensory neurons. 3. Sensory neurons carry action potentials through cranial nerves or spinal nerves to the CNS. 4. Typically the sensory information is carried ...
The Nervous System
... AFFERENT FIBERS- nerve fibers that conduct impulses toward the CNS. EFFERENT FIBERS- nerve fibers that conduct impulses away from the CNS. SOMATIC - on or relating to the wall of the body or the framework of the body and not to the viscera; i.e., relating to the skin and the skeletal muscles. VISCER ...
... AFFERENT FIBERS- nerve fibers that conduct impulses toward the CNS. EFFERENT FIBERS- nerve fibers that conduct impulses away from the CNS. SOMATIC - on or relating to the wall of the body or the framework of the body and not to the viscera; i.e., relating to the skin and the skeletal muscles. VISCER ...
Functional Organization of Nervous Tissue
... • Spinal nerves have a dorsal root (sensory neurons) and a ventral root (motor neurons) • Names of nerves in plexuses generally describe ...
... • Spinal nerves have a dorsal root (sensory neurons) and a ventral root (motor neurons) • Names of nerves in plexuses generally describe ...
III. NEURAL COMMUNICATION A. Resting Potential In this section
... potential. In an all-or-nothing manner. A myelinized axon causes the action potential to travel faster because action potentials occurs at the nodes. A highly stimulated cell will fire repeatedly in a short period of time. ...
... potential. In an all-or-nothing manner. A myelinized axon causes the action potential to travel faster because action potentials occurs at the nodes. A highly stimulated cell will fire repeatedly in a short period of time. ...
Unit 3 Notes
... Dendrite: a neuron’s bushy, branching extensions that receive messages and conduct impulses toward the cell body. Axon: the neuron extension that passes messages through its branches to other neurons or to muscles or glands. ...
... Dendrite: a neuron’s bushy, branching extensions that receive messages and conduct impulses toward the cell body. Axon: the neuron extension that passes messages through its branches to other neurons or to muscles or glands. ...
14-Taste & Smell
... From there , second-order neurns give rise to axons that cross the midline and join the Medial Lemniscus to end with fibers of touch , pain and temperature in the Ventrobasal Complex of the Thalamus . From the thalamus third-order neurons arise and ...
... From there , second-order neurns give rise to axons that cross the midline and join the Medial Lemniscus to end with fibers of touch , pain and temperature in the Ventrobasal Complex of the Thalamus . From the thalamus third-order neurons arise and ...
Chapter 13: Peripheral Nervous System
... Receives input from limbic system and other regions of the cerebrum ...
... Receives input from limbic system and other regions of the cerebrum ...
Nerve activates contraction
... starts, it is propagated over the entire axon Potassium ions rush out of the neuron after sodium ions rush in, which repolarizes the membrane The sodium-potassium pump restores the original configuration This action requires ATP ...
... starts, it is propagated over the entire axon Potassium ions rush out of the neuron after sodium ions rush in, which repolarizes the membrane The sodium-potassium pump restores the original configuration This action requires ATP ...
110 ~W~U~~ ~~~\W(Q)(UJ~
... nerves descend within the spinal canal to reach their point of exit from the vertebral column. The peripheral nervous system consists of 12 pairs of cranial nerves and 31 pairs of spinal nerves and their branches, which connect the central nervous system to receptors, glands, and muscles throughout ...
... nerves descend within the spinal canal to reach their point of exit from the vertebral column. The peripheral nervous system consists of 12 pairs of cranial nerves and 31 pairs of spinal nerves and their branches, which connect the central nervous system to receptors, glands, and muscles throughout ...
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.