BDS Ist YEAR EXAMINATION 2008-09
... The chorda tympani nerve arises at the following distance from the stylomastoid foramen: a) 6 cm above b) 6 cm below c) 6 mm above d) 6 mm below ...
... The chorda tympani nerve arises at the following distance from the stylomastoid foramen: a) 6 cm above b) 6 cm below c) 6 mm above d) 6 mm below ...
Chapter 12-13 Summary
... Neuroglia support protect neurons in the CNS. Specific glial cells are phagocytes; other myelinate neuron processes in the CNS or line cavities. ...
... Neuroglia support protect neurons in the CNS. Specific glial cells are phagocytes; other myelinate neuron processes in the CNS or line cavities. ...
Document
... • transmit signals at a fast rate. • allows signals to transmit at a fast rate through the specific and other locations. ...
... • transmit signals at a fast rate. • allows signals to transmit at a fast rate through the specific and other locations. ...
ANPS 019 Black 11-05
... Inferior (ICP) input: unconscious proprioception (relationship of body in space) info from olivary nucleus (motor learning) Middle (MCP) Input: Motor info from cortex for coordination, forms transverse fibers that give pons its shape Superior (SCP) Output: TO red nucleus and thalamus to correct moto ...
... Inferior (ICP) input: unconscious proprioception (relationship of body in space) info from olivary nucleus (motor learning) Middle (MCP) Input: Motor info from cortex for coordination, forms transverse fibers that give pons its shape Superior (SCP) Output: TO red nucleus and thalamus to correct moto ...
Nervous System Part 1
... Membrane Potential Active transport Na+/K+ pumps maintain the ion concentrations as seen in table 6-2. ...
... Membrane Potential Active transport Na+/K+ pumps maintain the ion concentrations as seen in table 6-2. ...
No Slide Title
... The Information Flow, continued. • Axons that receive information from the periphery are called afferent axons (e.g. sensory endings in the skin). • Thus, motor neurons act as efferents from the nervous system, sensory neurons act as afferents into the nervous ...
... The Information Flow, continued. • Axons that receive information from the periphery are called afferent axons (e.g. sensory endings in the skin). • Thus, motor neurons act as efferents from the nervous system, sensory neurons act as afferents into the nervous ...
Peripheral Nervous System
... Some Say ‘Marry Money’; But My Brother Says ‘Bad Business, Marry Money’ ...
... Some Say ‘Marry Money’; But My Brother Says ‘Bad Business, Marry Money’ ...
Structural elements and mechanisms involved in the transformation
... Axon is efferent, it carries information from the spinal cord to the effectors in the PNS (muscles and glands) Two main categories : Somatic / Visceral motor neurons Somatic motor neurons: Originate from CNS direct axons to skeletal muscles control locomotion Types of efferent motor neurons ...
... Axon is efferent, it carries information from the spinal cord to the effectors in the PNS (muscles and glands) Two main categories : Somatic / Visceral motor neurons Somatic motor neurons: Originate from CNS direct axons to skeletal muscles control locomotion Types of efferent motor neurons ...
Neurotransmission Notes
... 4. The voltage sensitive Na+ gates only stay open a moment and then K+ gates open. These allow K+ to rush out of the axon, bringing it back to a negative charge (when called this repolarization or hyperpolarization). 5. Although the charge is back to rest, the Na+ and K+ ions are on opposite sides ...
... 4. The voltage sensitive Na+ gates only stay open a moment and then K+ gates open. These allow K+ to rush out of the axon, bringing it back to a negative charge (when called this repolarization or hyperpolarization). 5. Although the charge is back to rest, the Na+ and K+ ions are on opposite sides ...
Solutions - ISpatula
... nervous system to the CNS after transduction of the energy of the stimulus into a receptor potential. If the sensory receptors cell themselves are specialized neurons, the action potential will be directly produced and since they have axons they will extend to the CNS. If the sensory neuron is a sep ...
... nervous system to the CNS after transduction of the energy of the stimulus into a receptor potential. If the sensory receptors cell themselves are specialized neurons, the action potential will be directly produced and since they have axons they will extend to the CNS. If the sensory neuron is a sep ...
ACP Level 2 Lesson Twelve
... a very clearly marked H shape which betrays the arrangement of the nerves. The grey non modulated ones make the H shape and then the white myelin make up the spaces in between. In fact every nerve goes through the spine (I hope you are shouting except the olfactory nerves through the sinuses by now. ...
... a very clearly marked H shape which betrays the arrangement of the nerves. The grey non modulated ones make the H shape and then the white myelin make up the spaces in between. In fact every nerve goes through the spine (I hope you are shouting except the olfactory nerves through the sinuses by now. ...
Nervous System - Mrs. Riggs Online
... • cerebrospinal fluid circulates through fibers of arachnoid; cushions brain • glial cells: support and insulate nerve tissue • neurons: actual nerve cells; long fibers branch out from cell bodies • cell body: contains nucleus and most of nerve cell's cytoplasm; found only in brain, spinal cord or i ...
... • cerebrospinal fluid circulates through fibers of arachnoid; cushions brain • glial cells: support and insulate nerve tissue • neurons: actual nerve cells; long fibers branch out from cell bodies • cell body: contains nucleus and most of nerve cell's cytoplasm; found only in brain, spinal cord or i ...
Ch. 19 Sec. 1 Notes
... *A bundle of nerve fibers is called a nerve Kinds of Neurons *3 kinds of neurons are found in the body: 1. Sensory neurons -Picks up stimuli from the internal or external environment and coverts each stimulus into a nerve impulse -The impulse travels along the sensory neuron until it reaches an int ...
... *A bundle of nerve fibers is called a nerve Kinds of Neurons *3 kinds of neurons are found in the body: 1. Sensory neurons -Picks up stimuli from the internal or external environment and coverts each stimulus into a nerve impulse -The impulse travels along the sensory neuron until it reaches an int ...
General Sensory Reception
... an external signal into a membrane potential • Two types of receptor ...
... an external signal into a membrane potential • Two types of receptor ...
Slide ()
... The muscle spindle detects changes in muscle length. A. The main components of the muscle spindle are intrafusal muscle fibers, afferent sensory endings, and efferent motor endings. The intrafusal fibers are specialized muscle fibers with central regions that are not contractile. Gamma motor neurons ...
... The muscle spindle detects changes in muscle length. A. The main components of the muscle spindle are intrafusal muscle fibers, afferent sensory endings, and efferent motor endings. The intrafusal fibers are specialized muscle fibers with central regions that are not contractile. Gamma motor neurons ...
Nervous System
... Dementia - damaged brain cells caused by injury or disease (Alzheimer’s); memory loss and personality change. Drugs and the Nervous System ...
... Dementia - damaged brain cells caused by injury or disease (Alzheimer’s); memory loss and personality change. Drugs and the Nervous System ...
Where does breathing start?
... It comes from the respiratory centres called medulla oblongata and the pons which are located in the lower brainstem. The medulla oblongata contains the Ventral Respiratory Group (VRG) and the Dorsal Respiratory Group and the pons contains the Pneumotaxic (PNG) and the Apneustic centres (APN). The f ...
... It comes from the respiratory centres called medulla oblongata and the pons which are located in the lower brainstem. The medulla oblongata contains the Ventral Respiratory Group (VRG) and the Dorsal Respiratory Group and the pons contains the Pneumotaxic (PNG) and the Apneustic centres (APN). The f ...
The Nervous System
... – However, a graded depolarization will bring the neuronal VM closer to threshold. Thus, it’s often referred to as an excitatory postsynaptic potential or EPSP. – Graded hyperpolarizations bring the neuronal VM farther away from threshold and thus are referred to as ...
... – However, a graded depolarization will bring the neuronal VM closer to threshold. Thus, it’s often referred to as an excitatory postsynaptic potential or EPSP. – Graded hyperpolarizations bring the neuronal VM farther away from threshold and thus are referred to as ...
File
... sudden change of voltage. There is a specific voltage-activated channel for every ion that pass through the membrane of a neuron. But the potassium and sodium ions voltage-activated channels are essential for the creation of the action potential. Voltage-activated channels ...
... sudden change of voltage. There is a specific voltage-activated channel for every ion that pass through the membrane of a neuron. But the potassium and sodium ions voltage-activated channels are essential for the creation of the action potential. Voltage-activated channels ...
Anat3_01_Nervous_Tissue
... an action potential begins during which an excitable cell cannot generate another action potential. Absolute refractory period – a second action potential ...
... an action potential begins during which an excitable cell cannot generate another action potential. Absolute refractory period – a second action potential ...
chapter – 21
... 4. Name the divisions of autonomic nervous system? A. Sympathetic and parasympathetic. 5. What are neurotransmitters? A. Neurotransmitters are biochemical’s secreted by terminal of one neuron for transmitting impulse to the next neuron. 6. What is synaptic knob? A. Each axon terminates as a bulb lik ...
... 4. Name the divisions of autonomic nervous system? A. Sympathetic and parasympathetic. 5. What are neurotransmitters? A. Neurotransmitters are biochemical’s secreted by terminal of one neuron for transmitting impulse to the next neuron. 6. What is synaptic knob? A. Each axon terminates as a bulb lik ...
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.