Circulatory system
... • What is the name given to the maintenance of the body’s internal environment within certain tolerable limits despite changes in the body’s external environment? • Homeostasis ...
... • What is the name given to the maintenance of the body’s internal environment within certain tolerable limits despite changes in the body’s external environment? • Homeostasis ...
sympathetic division
... nervous system that controls glands, cardiac muscle, and smooth muscle – also called visceral motor system – primary organs of the ANS ...
... nervous system that controls glands, cardiac muscle, and smooth muscle – also called visceral motor system – primary organs of the ANS ...
brain - Austin Community College
... - Sensory afferent fibers – carry impulses from skin, skeletal muscles, and joints - Visceral afferent fibers – transmit impulses from visceral organs 2. Efferent - transmit motor impulses from CNS to PNS - Somatic nervous system – provides conscious control of skeletal muscles - Autonomic nervous s ...
... - Sensory afferent fibers – carry impulses from skin, skeletal muscles, and joints - Visceral afferent fibers – transmit impulses from visceral organs 2. Efferent - transmit motor impulses from CNS to PNS - Somatic nervous system – provides conscious control of skeletal muscles - Autonomic nervous s ...
8: Control of Movement Biological Bases of Behavior
... Located in large arteries, around hair and in the eye Responds to neural or hormonal stimulation Muscle fibers produce spontaneous pacemaker potentials that elicit action potentials in adjacent smooth muscle fibers Single-unit muscle is found in gastrointestinal tract, uterus, small blood vessels ...
... Located in large arteries, around hair and in the eye Responds to neural or hormonal stimulation Muscle fibers produce spontaneous pacemaker potentials that elicit action potentials in adjacent smooth muscle fibers Single-unit muscle is found in gastrointestinal tract, uterus, small blood vessels ...
Lecture 14 - ANS
... postganglionic fibers of the sympathetic division (instead of NE) • Important because ACh causes dilation of these blood vessels, whereas NE causes constriction of the blood vessels in the abdominopelvic cavity • Thus widespead sympathetic activation leads to a redistribution of blood away from skin ...
... postganglionic fibers of the sympathetic division (instead of NE) • Important because ACh causes dilation of these blood vessels, whereas NE causes constriction of the blood vessels in the abdominopelvic cavity • Thus widespead sympathetic activation leads to a redistribution of blood away from skin ...
RULE 099.37 OCCUPATIONAL CARPAL TUNNEL SYNDROME
... The following recommended criteria are adapted from those of the State of Washington Department of Labor & Industry. Other criteria may be utilized as long as such criteria have a sound basis in the peer-reviewed literature. 1. Median palmar latencies (palm to wrist at 8 cm.) Abnormal latency > 2.2 ...
... The following recommended criteria are adapted from those of the State of Washington Department of Labor & Industry. Other criteria may be utilized as long as such criteria have a sound basis in the peer-reviewed literature. 1. Median palmar latencies (palm to wrist at 8 cm.) Abnormal latency > 2.2 ...
Lecture 14 - ANS
... • Important because ACh causes dilation of these blood vessels, whereas NE causes constriction of the blood vessels in the abdominopelvic cavity • Thus widespead sympathetic activation leads to a redistribution of blood away from skin and viscera and into skeletal muscles Æ This allows you to run aw ...
... • Important because ACh causes dilation of these blood vessels, whereas NE causes constriction of the blood vessels in the abdominopelvic cavity • Thus widespead sympathetic activation leads to a redistribution of blood away from skin and viscera and into skeletal muscles Æ This allows you to run aw ...
Concepts and functions - Pécsi Tudományegyetem
... Stroke, or cerebral apoplexy, is by far the most common kind of brain disorder. Rupture of a blood vessel (with a consequent cerebral hemorrhage), thrombosis or embolism may cause destruction of brain tissue. Such disorders are more frequent in the presence of artery wall disease, and hence are more ...
... Stroke, or cerebral apoplexy, is by far the most common kind of brain disorder. Rupture of a blood vessel (with a consequent cerebral hemorrhage), thrombosis or embolism may cause destruction of brain tissue. Such disorders are more frequent in the presence of artery wall disease, and hence are more ...
Muscle Twitches - Mount Carmel Academy
... While the action potential is occurring, ACh (which began the process) is broken down by enymes. For this reason, a single nerve impulse produces ...
... While the action potential is occurring, ACh (which began the process) is broken down by enymes. For this reason, a single nerve impulse produces ...
Muscles - Part 3
... While the action potential is occurring, ACh (which began the process) is broken down by enymes. For this reason, a single nerve impulse produces ...
... While the action potential is occurring, ACh (which began the process) is broken down by enymes. For this reason, a single nerve impulse produces ...
axonal terminals
... • The refractory period is when the Na+ and K+ are returned to their original sides: Na+ on the outside and K+ on the inside. • While the neuron is busy returning everything to normal, it doesn't respond to any incoming stimuli. • After the Na+/K+ pumps return the ions to their rightful side of the ...
... • The refractory period is when the Na+ and K+ are returned to their original sides: Na+ on the outside and K+ on the inside. • While the neuron is busy returning everything to normal, it doesn't respond to any incoming stimuli. • After the Na+/K+ pumps return the ions to their rightful side of the ...
Motor systems
... 3. Golgi tendon organs lie within the musculotendinous junctions and are activated when tension is produced by nearly active motor units. 4. Muscle spindles and tendon organs provide the CNS with continuous information about the mechanical state of the muscle. Sensory signals from muscle receptors a ...
... 3. Golgi tendon organs lie within the musculotendinous junctions and are activated when tension is produced by nearly active motor units. 4. Muscle spindles and tendon organs provide the CNS with continuous information about the mechanical state of the muscle. Sensory signals from muscle receptors a ...
26. Mixed cranial nervest
... • Cranial nerves are part of the peripheral nervous system. • Carry sensory or motor information or a combination and function in parasympathetic nervous system. • Cranial nerves I, II and VIII are purely sensory. • Cranial nerves III, IV, VI, XI and XII are motor (although also function balance) ...
... • Cranial nerves are part of the peripheral nervous system. • Carry sensory or motor information or a combination and function in parasympathetic nervous system. • Cranial nerves I, II and VIII are purely sensory. • Cranial nerves III, IV, VI, XI and XII are motor (although also function balance) ...
Slide ()
... thalamus, but most strongly by neurons in the center of the array (red neuron). The receptive field of an individual relay neuron is larger than that of any of the presynaptic sensory neurons because of the convergent connections. (Adapted, with permission, from Dudel 1983.) B. Inhibition (gray area ...
... thalamus, but most strongly by neurons in the center of the array (red neuron). The receptive field of an individual relay neuron is larger than that of any of the presynaptic sensory neurons because of the convergent connections. (Adapted, with permission, from Dudel 1983.) B. Inhibition (gray area ...
The Interoceptive, or Visceral, Sensations
... the spinothalamic tracts, a cordotomy to control visceral pain must be carried out with a deeper incision than one for the relief of somatic pain. Also, because the afferent impulses from the viscera ascend for a greater distance before decussating, it must be done at a higher level. Because viscera ...
... the spinothalamic tracts, a cordotomy to control visceral pain must be carried out with a deeper incision than one for the relief of somatic pain. Also, because the afferent impulses from the viscera ascend for a greater distance before decussating, it must be done at a higher level. Because viscera ...
Ch45--Neurons and Nervous Systems v2015
... After firing a neuron has to re-set itself Na+ needs to move back out K+ needs to move back in both are moving against concentration ...
... After firing a neuron has to re-set itself Na+ needs to move back out K+ needs to move back in both are moving against concentration ...
The Nervous System
... take information to the brain, descending tracts in the ventral part carry information down from the brain. THE BRAIN The brain itself contains parts which function in the coordination of movement, sensing, & consciousness (and all that entails), as well as areas that are below the level of consciou ...
... take information to the brain, descending tracts in the ventral part carry information down from the brain. THE BRAIN The brain itself contains parts which function in the coordination of movement, sensing, & consciousness (and all that entails), as well as areas that are below the level of consciou ...
Chapter 5 - Rooprai Spinal Trust
... fascicles. We set the device at 2 mA and then slowly lower the intensity until activation is lost, then increase it again until activation is first recovered, immediately suprathreshold. That setting is then used for subsequent fascicle identification. The selected fascicle was then followed proxima ...
... fascicles. We set the device at 2 mA and then slowly lower the intensity until activation is lost, then increase it again until activation is first recovered, immediately suprathreshold. That setting is then used for subsequent fascicle identification. The selected fascicle was then followed proxima ...
Neural Integration I: Sensory Pathways and the
... Interpretation of Sensory Information • Sensory neurons relay info from receptor to specific cortex areas • Link between receptor and cortical neuron = labeled line ...
... Interpretation of Sensory Information • Sensory neurons relay info from receptor to specific cortex areas • Link between receptor and cortical neuron = labeled line ...
The somatic sensory system
... occurred and requires summation Magnitude estimation – the ability to detect how intense the stimulus is Spatial discrimination – identifying the site or pattern of the stimulus Feature abstraction – used to identify a substance that has specific texture or shape Quality discrimination – the ...
... occurred and requires summation Magnitude estimation – the ability to detect how intense the stimulus is Spatial discrimination – identifying the site or pattern of the stimulus Feature abstraction – used to identify a substance that has specific texture or shape Quality discrimination – the ...
Text 4-Nervous system: Organization and Physiology
... Remember the synapse … when the action potential arrives at the axon terminals … The synapse is the point of communication between two neurons. Chemical synapses have a synaptic cleft (about 10 – 20 nm wide) and neurotransmitter diffuses across the cleft to bind to receptors on the postsynaptic neu ...
... Remember the synapse … when the action potential arrives at the axon terminals … The synapse is the point of communication between two neurons. Chemical synapses have a synaptic cleft (about 10 – 20 nm wide) and neurotransmitter diffuses across the cleft to bind to receptors on the postsynaptic neu ...
Pain - WordPress.com
... The archispinothalamic tract is a multisynaptic diffuse tract or pathway. The first-order nociceptive neurons make synaptic connections in Rexed layer II (substantiagelatinosa) and ascend to laminae IV to VII. From lamina IV to VII, fibers ascend and descend in the spinal cord via the ...
... The archispinothalamic tract is a multisynaptic diffuse tract or pathway. The first-order nociceptive neurons make synaptic connections in Rexed layer II (substantiagelatinosa) and ascend to laminae IV to VII. From lamina IV to VII, fibers ascend and descend in the spinal cord via the ...
Microneurography
Microneurography is a neurophysiological method employed by scientists to visualize and record the normal traffic of nerve impulses that are conducted in peripheral nerves of waking human subjects. The method has been successfully employed to reveal functional properties of a number of neural systems, e.g. sensory systems related to touch, pain, and muscle sense as well as sympathetic activity controlling the constriction state of blood vessels. To study nerve impulses of an identified neural system, a fine tungsten needle electrode is inserted into the nerve and connected to a high gain recording amplifier. The exact position of the electrode tip within the nerve is then adjusted in minute steps until the electrode discriminates impulses of the neural system of interest. A unique feature and a significant strength of the microneurography method is that subjects are fully awake and able to cooperate in tests requiring mental attention, while impulses in a representative nerve fibre or set of nerve fibres are recorded, e.g. when cutaneous sense organs are stimulated or subjects perform voluntary precision movements.