Chapter 22 Thalamus
... Receptors; specialized cells which convert external stimulus energy into a signal that produces a neural response Each of the fundamental types of stimuli has a separate population of receptors selective for the particular form of energy Within a single sensory system are classes of receptors ...
... Receptors; specialized cells which convert external stimulus energy into a signal that produces a neural response Each of the fundamental types of stimuli has a separate population of receptors selective for the particular form of energy Within a single sensory system are classes of receptors ...
BIOL241NSintro12aJUL2012
... • Affect receptors of postsynaptic membrane • Broken down by enzymes and, or, taken up into presynaptic cell • Are reassembled at synaptic knob ...
... • Affect receptors of postsynaptic membrane • Broken down by enzymes and, or, taken up into presynaptic cell • Are reassembled at synaptic knob ...
BIOL241NSintro12aJUL2012
... • Affect receptors of postsynaptic membrane • Broken down by enzymes and, or, taken up into presynaptic cell • Are reassembled at synaptic knob ...
... • Affect receptors of postsynaptic membrane • Broken down by enzymes and, or, taken up into presynaptic cell • Are reassembled at synaptic knob ...
How is the Nervous System Organized? Class Objectives:
... The Axon _________________________from the cell body toward other neurons, muscles or glands. ___________________is the knob-like end of the axon ...
... The Axon _________________________from the cell body toward other neurons, muscles or glands. ___________________is the knob-like end of the axon ...
Neurons
... called “firing.” They can either fire, or not. This is called the “all-or-none principle.” A neuron always fires with the same intensity regardless of the stimulation from the dendrites. ...
... called “firing.” They can either fire, or not. This is called the “all-or-none principle.” A neuron always fires with the same intensity regardless of the stimulation from the dendrites. ...
Nervous System
... Pain and pressure receptors in the skin are stimulated. Sensory neurons carry the impulses to the spinal cord by way of the dorsal root. An interneuron picks up the impulse from the sensory and transmits it to the motor neuron. At the same time the impulse is also transmitted to the brain. The motor ...
... Pain and pressure receptors in the skin are stimulated. Sensory neurons carry the impulses to the spinal cord by way of the dorsal root. An interneuron picks up the impulse from the sensory and transmits it to the motor neuron. At the same time the impulse is also transmitted to the brain. The motor ...
neurohistology
... Many peripheral nerves are myelinatedresemble a string of sausages Each link of sausage corresponds to a length of axon wrapped in myelin with adjacent links separated by a gap in myelin ...
... Many peripheral nerves are myelinatedresemble a string of sausages Each link of sausage corresponds to a length of axon wrapped in myelin with adjacent links separated by a gap in myelin ...
Lecture 11a Nervous System
... • Synaptic cleft The small gap that separates the presynaptic membrane and the postsynaptic membrane • Area of terminal containing synaptic vesicles filled with neurotransmitters Figure 12–2 ...
... • Synaptic cleft The small gap that separates the presynaptic membrane and the postsynaptic membrane • Area of terminal containing synaptic vesicles filled with neurotransmitters Figure 12–2 ...
nervous system
... The human brain is a 3-pound (1.4-kilogram) mass of jelly-like fats and tissues— yet it's the most complex of all known living structures. Up to one trillion nerve cells work together and coordinate the physical actions and mental processes that set humans apart from other species. ...
... The human brain is a 3-pound (1.4-kilogram) mass of jelly-like fats and tissues— yet it's the most complex of all known living structures. Up to one trillion nerve cells work together and coordinate the physical actions and mental processes that set humans apart from other species. ...
Learning Objectives
... Single process arises from body Branches into an axon and dendrite, eg Present in spinal and cranial ganglia ...
... Single process arises from body Branches into an axon and dendrite, eg Present in spinal and cranial ganglia ...
Nervous Tissue - Northland Community & Technical College
... synthesis of new proteins changes in synaptic contacts with other neurons ...
... synthesis of new proteins changes in synaptic contacts with other neurons ...
Biology 3201
... This causes outside of membrane to have an abundance of + charges compared to inside. The inside of the membrane is negative compared to the outside (this is helped by the (-)’ly charged proteins, etc. on the inside) The “sodium-potassium” pump pulls 2 K+ ions in for 3 Na+ ions sent out. This furthe ...
... This causes outside of membrane to have an abundance of + charges compared to inside. The inside of the membrane is negative compared to the outside (this is helped by the (-)’ly charged proteins, etc. on the inside) The “sodium-potassium” pump pulls 2 K+ ions in for 3 Na+ ions sent out. This furthe ...
Chapter 12 - FacultyWeb
... Both require a rapid succession of stimuli at a single synapse. Both are methods by which individual EPSPs combine to result in an action potential. Both occur when simultaneous stimuli are applied at different locations, causing a cumulative effect on ...
... Both require a rapid succession of stimuli at a single synapse. Both are methods by which individual EPSPs combine to result in an action potential. Both occur when simultaneous stimuli are applied at different locations, causing a cumulative effect on ...
Essentials of Anatony and Physiology, 5e (Martini
... What are the functions of the afferent and efferent divisions of the peripheral nervous system? The brain and spinal cord comprise which branch of the nervous system? Neurons responsible for integrating sensory information and coordinating motor activity are called… Neurons that monitor the internal ...
... What are the functions of the afferent and efferent divisions of the peripheral nervous system? The brain and spinal cord comprise which branch of the nervous system? Neurons responsible for integrating sensory information and coordinating motor activity are called… Neurons that monitor the internal ...
Neuron, Impulse Generation, and Reflex Arc
... or receptor stimulation) causes the membrane to depolarize to a certain level called the threshold. In the case of natural stimulation (receptor or neurotransmitter) this initial depolarization is due to a special sodium channel opening allowing Na+ to move into the cell. INITIAL depolarization. W ...
... or receptor stimulation) causes the membrane to depolarize to a certain level called the threshold. In the case of natural stimulation (receptor or neurotransmitter) this initial depolarization is due to a special sodium channel opening allowing Na+ to move into the cell. INITIAL depolarization. W ...
Lecture 3
... first cortical area in the visual pathway. Hubel and Wiesel (1950's and 60's) were the first to describe properties of V1 cells. (Movie) They described 3 types: Simple cells: Elongated Receptive fields. Orientation selective. Defined regions of excitation and inhibition. Complex cells: Also orientat ...
... first cortical area in the visual pathway. Hubel and Wiesel (1950's and 60's) were the first to describe properties of V1 cells. (Movie) They described 3 types: Simple cells: Elongated Receptive fields. Orientation selective. Defined regions of excitation and inhibition. Complex cells: Also orientat ...
NERVOUS SYSTEM
... Simplest nerve pathway Many psychologists think this is how all nervous systems work ...
... Simplest nerve pathway Many psychologists think this is how all nervous systems work ...
Supporting Cells of the Nervous System
... 2) act as phagocytes to clean up worn-out neuron organelles. 3) Electrically insulate neurons by forming a myelin sheath. 4) increase the speed of the action potential (electrochemical message) in those cells that have a myelin sheath. ...
... 2) act as phagocytes to clean up worn-out neuron organelles. 3) Electrically insulate neurons by forming a myelin sheath. 4) increase the speed of the action potential (electrochemical message) in those cells that have a myelin sheath. ...
Circulatory System Directs blood from the heart to the rest of the
... •Small branches called dendrites receive chemical or electrical input from the body. Neurons have many dendrites •Large branches are called axons, or nerve fibers, which carry information away from the cell in the form of a nerve impulse. Neurons commonly have only 1 axon •Nerves are simply bundles ...
... •Small branches called dendrites receive chemical or electrical input from the body. Neurons have many dendrites •Large branches are called axons, or nerve fibers, which carry information away from the cell in the form of a nerve impulse. Neurons commonly have only 1 axon •Nerves are simply bundles ...
Nerve
... c) microglia: phagocytotic cells responsible for waste disposal in the CNS B. Spinal Cord (see Ross, plate 44, p300) 1. The spinal cord can be divided into 2 parts: a) white matter (myelinated axons and glial cells; mostly oligodendrocytes) b) gray matter (neuronal cell bodies and dendrites; looks ...
... c) microglia: phagocytotic cells responsible for waste disposal in the CNS B. Spinal Cord (see Ross, plate 44, p300) 1. The spinal cord can be divided into 2 parts: a) white matter (myelinated axons and glial cells; mostly oligodendrocytes) b) gray matter (neuronal cell bodies and dendrites; looks ...
6-Autonomic nervous system
... ganglia). Postganglionic axons supply structures in head, thorax & abdomen. 2. Cells located in 2nd, 3rd & 4th sacral segments of spinal cord. Preganglionic axons leave the spinal cord, join corresponding sacral spinal nerves to reach peripheral ganglia in pelvis where they synapse. Postganglionic n ...
... ganglia). Postganglionic axons supply structures in head, thorax & abdomen. 2. Cells located in 2nd, 3rd & 4th sacral segments of spinal cord. Preganglionic axons leave the spinal cord, join corresponding sacral spinal nerves to reach peripheral ganglia in pelvis where they synapse. Postganglionic n ...