Pathophysiology of Pain
... horn, travel ventrally, and terminate in lamina III and deeper. C fibers (small unmyelinated afferents) penetrate directly and generally terminate no deeper than lamina II. However, after peripheral nerve injury there is a prominent sprouting of large afferents dorsally from lamina III into laminae ...
... horn, travel ventrally, and terminate in lamina III and deeper. C fibers (small unmyelinated afferents) penetrate directly and generally terminate no deeper than lamina II. However, after peripheral nerve injury there is a prominent sprouting of large afferents dorsally from lamina III into laminae ...
General Senses Complete
... Respond to light touch Are located in the dermal papillae of the skin Are encapsulated by connective tissue Ruffini’s Corpuscles: respond to stretch and deep pressure Are encapsulated by connective tissue ...
... Respond to light touch Are located in the dermal papillae of the skin Are encapsulated by connective tissue Ruffini’s Corpuscles: respond to stretch and deep pressure Are encapsulated by connective tissue ...
Sense Organs - human anatomy
... inadequate to meet is metabolic needs They respond to excessive stimulation from heat or chemicals Mechanoreceptors respond to physical forces on cells caused by touch, pressure, stretch, tension, or vibration They include the organs of hearing and balance They include many receptors of the ...
... inadequate to meet is metabolic needs They respond to excessive stimulation from heat or chemicals Mechanoreceptors respond to physical forces on cells caused by touch, pressure, stretch, tension, or vibration They include the organs of hearing and balance They include many receptors of the ...
Nervous System Communication
... • Nerve impulse is started by a stimulus • Stimuli cause movements of ions through membrane • Threshold potential – Sufficient stimulation to depolarize membrane ...
... • Nerve impulse is started by a stimulus • Stimuli cause movements of ions through membrane • Threshold potential – Sufficient stimulation to depolarize membrane ...
The peripheral nerves
... skeletal muscles also send their commands over large, myelinated Type A axons. Type B fibers and Type C fibers carry lessurgent information concerning temperature, pain, itching, and general touch and pressure sensations to the CNS and carry motor instructions to smooth muscle, cardiac muscle, gland ...
... skeletal muscles also send their commands over large, myelinated Type A axons. Type B fibers and Type C fibers carry lessurgent information concerning temperature, pain, itching, and general touch and pressure sensations to the CNS and carry motor instructions to smooth muscle, cardiac muscle, gland ...
Sample pages 1 PDF
... The purpose of somatosensory afferents and their peripheral transduction organs is to inform the central nervous system about events occurring at the interface between the surface of the organism and the outside world. At this interface, sensory afferent terminals in the skin distinguish between mul ...
... The purpose of somatosensory afferents and their peripheral transduction organs is to inform the central nervous system about events occurring at the interface between the surface of the organism and the outside world. At this interface, sensory afferent terminals in the skin distinguish between mul ...
Neuro Med-Surg
... Vibration Position – have pt close eye, move big toe or finger and ask pt if it is pointing up or down. It test cerebellum function. Have to have an intact cerebellum to have it. Discrimination – assess the cerebral cortex (outerlayer) stereognosis= with out looking at the object and identifying wha ...
... Vibration Position – have pt close eye, move big toe or finger and ask pt if it is pointing up or down. It test cerebellum function. Have to have an intact cerebellum to have it. Discrimination – assess the cerebral cortex (outerlayer) stereognosis= with out looking at the object and identifying wha ...
4-Nervous system I: Structure and organization
... -Sensory nerve fibers can be somatic (from skin, skeletal muscles or joints) or visceral (from organs within the ventral body cavity) 2. Motor (efferent) PNS nerve cells -Conduct impulses from CNS to effectors (muscles) -Motor nerve fibers (both autonomic and somatic/voluntary) ...
... -Sensory nerve fibers can be somatic (from skin, skeletal muscles or joints) or visceral (from organs within the ventral body cavity) 2. Motor (efferent) PNS nerve cells -Conduct impulses from CNS to effectors (muscles) -Motor nerve fibers (both autonomic and somatic/voluntary) ...
![Unit 8 Review Sheet[1]](http://s1.studyres.com/store/data/001686639_1-accaddf9a4bef8f1f5e508cc8efafb82-300x300.png)
Unit 8 Review Sheet[1]
... - Retinal Disparity: Your brain receives two images of the world that are different your brain makes them one image. Monocular Cues: Depth cues that are available to either eye alone. Allows you to judge distance between objects. Optical Illusions: Why do they happen? (Physiological and cognitive) - ...
... - Retinal Disparity: Your brain receives two images of the world that are different your brain makes them one image. Monocular Cues: Depth cues that are available to either eye alone. Allows you to judge distance between objects. Optical Illusions: Why do they happen? (Physiological and cognitive) - ...
Ch. 19 Sec. 1 Notes
... *They all begin in dendrites; move rapidly toward the neuron's cell body and then down the axon until it reaches the axon tip *A nerve impulse travels along the neuron in the form of electrical and chemical ...
... *They all begin in dendrites; move rapidly toward the neuron's cell body and then down the axon until it reaches the axon tip *A nerve impulse travels along the neuron in the form of electrical and chemical ...
nerve
... neuron. Myelin is not part of the structure of the neuron but consists of a thick layer mostly made up of lipids, present at regular intervals along the length of the axon. • Such fibers are called myelinated fibers. • The water-soluble ions carrying the current across the membrane cannot permeate t ...
... neuron. Myelin is not part of the structure of the neuron but consists of a thick layer mostly made up of lipids, present at regular intervals along the length of the axon. • Such fibers are called myelinated fibers. • The water-soluble ions carrying the current across the membrane cannot permeate t ...
Neurology - Porterville College
... Excitatory Neurotransmitters • Dopamine – Gross subconscious movement – Fine motor skills – Emotional responses ...
... Excitatory Neurotransmitters • Dopamine – Gross subconscious movement – Fine motor skills – Emotional responses ...
Chapter 35 Nervous System Notes Outline
... How do we sense light (vision)? a. Corneab. Irisc. Pupild. Lense. Retinaf. Rodsg. Conesh. Foveai. Optical nerve- ...
... How do we sense light (vision)? a. Corneab. Irisc. Pupild. Lense. Retinaf. Rodsg. Conesh. Foveai. Optical nerve- ...
brain
... • Four types of flavors: sour, sweet, salty and bitter • Different areas of tongues taste different flavors • Taste buds pick up tastes and send them to brain ...
... • Four types of flavors: sour, sweet, salty and bitter • Different areas of tongues taste different flavors • Taste buds pick up tastes and send them to brain ...
mechanoreceptors
... 1-Tocuh receptors in the skin which are stimulated by light mechanical stimuli. 2-Pressure receptors in the subcutaneous tissues which are stimulated by deep mechanical stimuli. ...
... 1-Tocuh receptors in the skin which are stimulated by light mechanical stimuli. 2-Pressure receptors in the subcutaneous tissues which are stimulated by deep mechanical stimuli. ...
Introduction_to_nerv..
... 1.The motor neuron transmits nerve impulses from the CNS to the effectors 2.The sensory neuron transmits nerve impulses from the receptors to the CNS 3.The relay neuron connects the sensory neuron to the motor neuron and also neurons in the CNS ...
... 1.The motor neuron transmits nerve impulses from the CNS to the effectors 2.The sensory neuron transmits nerve impulses from the receptors to the CNS 3.The relay neuron connects the sensory neuron to the motor neuron and also neurons in the CNS ...
Chapter 6
... - Tendon Organs (Golgi tendon organs) - consists of sensory fiber penetrating a thin capsule of connective tissue and entwining around a few collagen fibers, found at the junctions of a tendon with a muscle, help protect tendons and associated muscles from damage due to excessive tension or stretchi ...
... - Tendon Organs (Golgi tendon organs) - consists of sensory fiber penetrating a thin capsule of connective tissue and entwining around a few collagen fibers, found at the junctions of a tendon with a muscle, help protect tendons and associated muscles from damage due to excessive tension or stretchi ...
The Nervous System
... Ranvier, regular spacing MULTIPLE SCLEROSIS: a disease in which the myelin sheaths around the fibers are destroyed and converted to hard shells, this short circuits the impulse and muscle control is effected greatly….AUTOIMMUNE DISEASE… no cure, but some treatment ...
... Ranvier, regular spacing MULTIPLE SCLEROSIS: a disease in which the myelin sheaths around the fibers are destroyed and converted to hard shells, this short circuits the impulse and muscle control is effected greatly….AUTOIMMUNE DISEASE… no cure, but some treatment ...
Functional Classification of the Peripheral Nervous System
... • Chronic, potentially debilitating disease that affects the central nervous system, which is made up of the brain and spinal cord. • Myelin sheath is destroyed- It hardens to a tissue called the scleroses • Transmitted nerve impulses are short-circuited • Affected person loses control of his/her mu ...
... • Chronic, potentially debilitating disease that affects the central nervous system, which is made up of the brain and spinal cord. • Myelin sheath is destroyed- It hardens to a tissue called the scleroses • Transmitted nerve impulses are short-circuited • Affected person loses control of his/her mu ...
The cutaneous sensory system Neuroscience and Biobehavioral
... or avoidance behaviours; olfaction is also able to provide such information: think only of the smell of burning, or the aroma of coffee. For many behaviours, a physical and/or chemical contact sense is required in order to extract more information about stimuli in the immediate environment, and the ...
... or avoidance behaviours; olfaction is also able to provide such information: think only of the smell of burning, or the aroma of coffee. For many behaviours, a physical and/or chemical contact sense is required in order to extract more information about stimuli in the immediate environment, and the ...
Regulation of Breathing
... 2. Inspiratory neurons send impulses via the vagus nerve 3. Expiratory neurons sends impulses II. Pons – the word “pon” literally means bridge. It takes commands like “I need to swim/talk/ sing” (cerebral cortex) Into “Breathe now, hold now” commands (medulla) a. There are two groups of neurons in t ...
... 2. Inspiratory neurons send impulses via the vagus nerve 3. Expiratory neurons sends impulses II. Pons – the word “pon” literally means bridge. It takes commands like “I need to swim/talk/ sing” (cerebral cortex) Into “Breathe now, hold now” commands (medulla) a. There are two groups of neurons in t ...
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.