Theme 6. Vision
... are adequate. The vibrations are transmitted to the hair cells in the cochlea via the tympanic membrane and the ossicles. (1) Describe the organisation of the hair cells in the organ of Corti and their transduction mechanisms? (4p) (2) Describe the way the nerve impulses elicited by the hair cells t ...
... are adequate. The vibrations are transmitted to the hair cells in the cochlea via the tympanic membrane and the ossicles. (1) Describe the organisation of the hair cells in the organ of Corti and their transduction mechanisms? (4p) (2) Describe the way the nerve impulses elicited by the hair cells t ...
The Visual Perception System
... processes such as drawing on past experiences with similar stimuli; judging size, shape and distance; and working out appropriate ways of interpreting and responding to stimuli. Characteristics of the visual perception system: processes reception, transduction, transmission, selection, organization ...
... processes such as drawing on past experiences with similar stimuli; judging size, shape and distance; and working out appropriate ways of interpreting and responding to stimuli. Characteristics of the visual perception system: processes reception, transduction, transmission, selection, organization ...
Neuronal Cytoskeleton14
... Characterized by the radial growth of the axon (increased diameter), which is because of increased neurofilament expression and its phosphorylation. Next slide: Stimulation of axonal neurofilament phosphorylation by myelinating Schwann cells. - Note the interaction between Schwann cell membrane and ...
... Characterized by the radial growth of the axon (increased diameter), which is because of increased neurofilament expression and its phosphorylation. Next slide: Stimulation of axonal neurofilament phosphorylation by myelinating Schwann cells. - Note the interaction between Schwann cell membrane and ...
Ch. 9: The Nervous System: The Body's Control Center
... Most inferior lobes, separated by lateral sulci = temporal lobes; involved in hearing and integration of emotions Information coming into brain is contralateral = the right side of body is controlled by left side of cerebral cortex and left side of body is controlled by right side of cerebral cor ...
... Most inferior lobes, separated by lateral sulci = temporal lobes; involved in hearing and integration of emotions Information coming into brain is contralateral = the right side of body is controlled by left side of cerebral cortex and left side of body is controlled by right side of cerebral cor ...
Spinal Cord
... discrimination and vibratory sense ipsilaterally is due to interruption of the posterior white columns (fasciculus gracilis/cuneatus). This is frequently accompanied by a Romberg sign. A normal individual, standing erect with heels together and eyes closed, sways only slightly. Stable posture is ach ...
... discrimination and vibratory sense ipsilaterally is due to interruption of the posterior white columns (fasciculus gracilis/cuneatus). This is frequently accompanied by a Romberg sign. A normal individual, standing erect with heels together and eyes closed, sways only slightly. Stable posture is ach ...
Radial Tunnel Syndrome - Kennedy
... tunnel syndrome get worse with using the arm - just like tennis elbow. The pain is on the outside of the elbow - just like tennis elbow. The one difference is that the place where the elbow is most tender is slightly different. In tennis elbow, the tenderness is mostly right where the tendon attache ...
... tunnel syndrome get worse with using the arm - just like tennis elbow. The pain is on the outside of the elbow - just like tennis elbow. The one difference is that the place where the elbow is most tender is slightly different. In tennis elbow, the tenderness is mostly right where the tendon attache ...
12-1 Test Bank Huether and McCance: Understanding
... The dendrites carry impulses toward the cell body, but not as quickly as large axons. REF: p. 295 4. A neurologist is teaching the staff about motor neurons. Which information should be included? Motor neurons are structurally classified as _____ neurons. a. Unipolar b. Pseudounipolar c. Bipolar d. ...
... The dendrites carry impulses toward the cell body, but not as quickly as large axons. REF: p. 295 4. A neurologist is teaching the staff about motor neurons. Which information should be included? Motor neurons are structurally classified as _____ neurons. a. Unipolar b. Pseudounipolar c. Bipolar d. ...
Muscle Structure
... is called the motor end plate, or more often, the neuromuscular junction Each muscle cell has only one neuromuscular junction, although a single motor neuron innervates many muscle fibres, sometimes as many as several hundred A motor neuron and the muscle it innervates is called a motor unit; wh ...
... is called the motor end plate, or more often, the neuromuscular junction Each muscle cell has only one neuromuscular junction, although a single motor neuron innervates many muscle fibres, sometimes as many as several hundred A motor neuron and the muscle it innervates is called a motor unit; wh ...
Infancy: Physical Development
... • Young infants recognize that objects experienced by one sense are the same as those experienced through another sense. • Five-month-old infants look at novel stimulation longer than familiar sources of stimulation. – Infants looked at unfamiliar objects longer than objects they had held in their h ...
... • Young infants recognize that objects experienced by one sense are the same as those experienced through another sense. • Five-month-old infants look at novel stimulation longer than familiar sources of stimulation. – Infants looked at unfamiliar objects longer than objects they had held in their h ...
Functions of the Nervous System 1. Sensory input 2. Integration 3
... • Myelin sheath—concentric layers of Schwann cell membrane ...
... • Myelin sheath—concentric layers of Schwann cell membrane ...
Self Assessment Chapter 11 - CM
... signals from skeletal muscles, bones, joints, and skin; also transmits signals from organs of vision, hearing, taste, smell, and balance; sometimes called special sensory division • Visceral sensory division – consists of neurons that transmit signals from viscera (organs) such as heart, lungs, stom ...
... signals from skeletal muscles, bones, joints, and skin; also transmits signals from organs of vision, hearing, taste, smell, and balance; sometimes called special sensory division • Visceral sensory division – consists of neurons that transmit signals from viscera (organs) such as heart, lungs, stom ...
Synaptic Transmission and Neurotransmitters
... – Dendrites receive incoming signals – If sufficient, cell goes into firing mode ...
... – Dendrites receive incoming signals – If sufficient, cell goes into firing mode ...
Nervous System The master controlling and communicating system
... axon terminals which are the secretory regions of the neuron ...
... axon terminals which are the secretory regions of the neuron ...
Department of Electrical and Computer Engineering University of
... Early investigators of the mammalian brain imagined that the central nervous system (CNS) consisted of a complex interconnected network of neurons that possessed properties essentially identical to those determined by Hodgkin and Huxley for the squid giant axon (i.e., they generated simple action po ...
... Early investigators of the mammalian brain imagined that the central nervous system (CNS) consisted of a complex interconnected network of neurons that possessed properties essentially identical to those determined by Hodgkin and Huxley for the squid giant axon (i.e., they generated simple action po ...
No Slide Title
... • Two types of sleep apnea. 1. Obstructive: muscles of the upper airway are depressed during sleep more than the diaphragm. Causes upper airway to close during inspiration. In babies can be one form of SIDS 2. Central: cessation of all breathing, electrical activity is absent in phrenic nerves. ...
... • Two types of sleep apnea. 1. Obstructive: muscles of the upper airway are depressed during sleep more than the diaphragm. Causes upper airway to close during inspiration. In babies can be one form of SIDS 2. Central: cessation of all breathing, electrical activity is absent in phrenic nerves. ...
text
... Dorsal horn is divided into several laminae. The most dorsal is the marginal zone (lamina I), followed by the substantia gelatinosa (lamina II), and nucleus proprius (laminea IV,V). At the base of dorsal horn at segments T1-L2 is Clark’s nucleus from where dorsal spinocerebellar tract originates. ...
... Dorsal horn is divided into several laminae. The most dorsal is the marginal zone (lamina I), followed by the substantia gelatinosa (lamina II), and nucleus proprius (laminea IV,V). At the base of dorsal horn at segments T1-L2 is Clark’s nucleus from where dorsal spinocerebellar tract originates. ...
BIO 218 F 2012 Ch 14 Martini Lecture Outline
... Nerve Plexus The Lumbar and Sacral Plexuses (T12–S4) Also called the lumbosacral plexus Lumbar plexus nerves Genitofemoral nerve Lateral femoral cutaneous nerve Femoral nerve Sacral plexus nerves Sciatic nerve (branches to form the common fibular nerve and the tibial nerve) Pudendal nerve ...
... Nerve Plexus The Lumbar and Sacral Plexuses (T12–S4) Also called the lumbosacral plexus Lumbar plexus nerves Genitofemoral nerve Lateral femoral cutaneous nerve Femoral nerve Sacral plexus nerves Sciatic nerve (branches to form the common fibular nerve and the tibial nerve) Pudendal nerve ...
BIO 218 F 2012 Ch 14 Martini Lecture Outline
... Nerve Plexus The Lumbar and Sacral Plexuses (T12–S4) Also called the lumbosacral plexus Lumbar plexus nerves Genitofemoral nerve Lateral femoral cutaneous nerve Femoral nerve Sacral plexus nerves Sciatic nerve (branches to form the common fibular nerve and the tibial nerve) Pudendal nerve ...
... Nerve Plexus The Lumbar and Sacral Plexuses (T12–S4) Also called the lumbosacral plexus Lumbar plexus nerves Genitofemoral nerve Lateral femoral cutaneous nerve Femoral nerve Sacral plexus nerves Sciatic nerve (branches to form the common fibular nerve and the tibial nerve) Pudendal nerve ...
Physiology and Ecology Review
... All of the following statements concerning characteristics of predatorprey relationships are correct EXCEPT: A. A rise in the population of prey is often followed by a rise in the population of predators. B. A rise in the population of predators is followed by a decrease in the population of prey. ...
... All of the following statements concerning characteristics of predatorprey relationships are correct EXCEPT: A. A rise in the population of prey is often followed by a rise in the population of predators. B. A rise in the population of predators is followed by a decrease in the population of prey. ...
Practice Questions for Exam 2 As you prepare for the exam you
... 68) In class we went over the details of how a motor neuron conducts an action potential. You should be able to draw and label a motor neuron and describe how an action potential is conducted. 69) Describe the difference between continuous and salutatory conduction. 70) Paralytic shellfish poisoning ...
... 68) In class we went over the details of how a motor neuron conducts an action potential. You should be able to draw and label a motor neuron and describe how an action potential is conducted. 69) Describe the difference between continuous and salutatory conduction. 70) Paralytic shellfish poisoning ...
The Discovery of the Neuron By Mo Costandi from the History of
... meeting of the German Anatomical Society. It was at this meeting that Cajal met other investigators, some of whom were so impressed by his work that they abandoned their beliefs in the reticular theory. During his acceptance speech for the Nobel Prize in Physiology, which he was awarded with Golgi i ...
... meeting of the German Anatomical Society. It was at this meeting that Cajal met other investigators, some of whom were so impressed by his work that they abandoned their beliefs in the reticular theory. During his acceptance speech for the Nobel Prize in Physiology, which he was awarded with Golgi i ...
Synaptic Transmission
... potassium out instead of sodium in, which makes the neuron even more negative! ...
... potassium out instead of sodium in, which makes the neuron even more negative! ...
Control and Communication
... Which letter shows the site that controls heart rate and breathing rate? 4. The cerebellum a) Is responsible for conscious thoughts b) Co-ordinates muscles and balance c) Controls heart and breathing rate d) Detects change in water content 5. The following stages occur in a reflex action. 1 The effe ...
... Which letter shows the site that controls heart rate and breathing rate? 4. The cerebellum a) Is responsible for conscious thoughts b) Co-ordinates muscles and balance c) Controls heart and breathing rate d) Detects change in water content 5. The following stages occur in a reflex action. 1 The effe ...
Unit 09 Direction Sheet - Sonoma Valley High School
... Chapter 12 “Introduction To The Human Body” ...
... Chapter 12 “Introduction To The Human Body” ...
Rheobase
Rheobase is a measure of membrane excitability. In neuroscience, rheobase is the minimal current amplitude of infinite duration (in a practical sense, about 300 milliseconds) that results in the depolarization threshold of the cell membranes being reached, such as an action potential or the contraction of a muscle. In Greek, the root ""rhe"" translates to current or flow, and ""basi"" means bottom or foundation: thus the rheobase is the minimum current that will produce an action potential or muscle contraction.Rheobase can be best understood in the context of the strength-duration relationship (Fig. 1). The ease with which a membrane can be stimulated depends on two variables: the strength of the stimulus, and the duration for which the stimulus is applied. These variables are inversely related: as the strength of the applied current increases, the time required to stimulate the membrane decreases (and vice versa) to maintain a constant effect. Mathematically, rheobase is equivalent to half the current that needs to be applied for the duration of chronaxie, which is a strength-duration time constant that corresponds to the duration of time that elicits a response when the nerve is stimulated at twice rheobasic strength.The strength-duration curve was first discovered by G. Weiss in 1901, but it was not until 1909 that Louis Lapicque coined the term ""rheobase"". Many studies are being conducted in relation to rheobase values and the dynamic changes throughout maturation and between different nerve fibers. In the past strength-duration curves and rheobase determinations were used to assess nerve injury; today, they play a role in clinical identification of many neurological pathologies, including as Diabetic neuropathy, CIDP, Machado-Joseph Disease, and ALS.