Description : A nerve impulse is essentially a wave of A A. Electrical charge B. Mechanical Charge C. Magnetic charge D. All of the these
Last Answer : Electrical charg
Description : Consider the following statements: 1. Even when a nerve cell is not conducting an impulse, it is actively transporting K+ and Na+ ions in and out respectively against their concentration gradients at the expense of energy 2. As a ... is/are untrue? (a) 1 only (b) 1, 2, 4 (c) 2, 4 (d) 4 only
Last Answer : Ans:(d)
Description : During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge? (a) First positive, then negative and continue ... and again back to positive (d) First negative, then positive and again back to negative.
Last Answer : (d) First negative, then positive and again back to negative.
Description : The nerve fiber is capable of converting which stimuli to electrical energy a. Mechanical b. chemical c. Both d. none of them
Last Answer : Both
Description : What noise is a transient short-duration disturbance distributed essentially uniformly over the useful passband of a transmission system? A. Flicker noise B. Transit-time noise C. Shot noise D. Impulse noise
Last Answer : D. Impulse noise
Description : Which of the following ECG waveforms characterizes conduction of an electrical impulse through the left ventricle? a) QRS complex The QRS complex represents ventricular depolarization b) P ... QT interval is an ECG characteristic reflecting the time from ventricular depolarization to repolarization.
Last Answer : a) QRS complex The QRS complex represents ventricular depolarization
Description : Which of the following ECG characteristics is usually seen when a patient's serum potassium level is low? a) U wave The U wave is an ECG waveform characteristic that may ... interval The QT interval is an ECG characteristic reflecting the time from ventricular depolarization to repolarization.
Last Answer : a) U wave The U wave is an ECG waveform characteristic that may reflect Purkinje fiber repolarization. It is usually seen when a patient’s serum potassium level is low.
Description : Consider the following statements: 1. When a nerve fibre is stimulated, a profound change is produced in the electrical properties of surface membrane and in steady potential. 2. Upon excitation, the resting potentialis suddenly changed. 3. It is due ... 1, 2, 3 (b) 2, 3 (c) 1, 2, 3, 4 (d) 1, 2, 4
Description : Explain the mechanism through which a sound produces a nerve impulse in the inner ear. -Biology
Last Answer : answer:
Description : What is the difference between impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre? -Biology
Description : Direction of nerve impulse is reversed in nerve with
Last Answer : Direction of nerve impulse is reversed in nerve with A. Axo -axonic B. Axo-dendrite C. Axo -axondendritic D. None of the above
Description : Consider the following statements: 1. Propagation of a nerve impulse in a myelinated nerve fibre is different from that of unmyelinated fibre. 2. The impulse actually travels by leaping through the nodes of Ranvier in an unmyelinated fibre 3. ... incorrect? (a) 1, 2 (b) 1, 3, 4 (c) 2 only (d) 2, 3
Description : "Sodium Pump" operates in - (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above
Last Answer : (3) Nerve impulse Explanation: Na+/K+-ATPase (also known as sodium-potassium pump) is an enzyme located in the plasma them brane of virtually every human cell and is common to all cellular ... are voltagegated, which means that they can open and close depending on the voltage across the membrane.
Description : The fastest nerve impulse in humans travel at
Last Answer : eight metres per second.
Description : What is nerve impulse?
Last Answer : These are electrical pulses which travel in the body from CNS to a body parts form the body parts to CNS to carrying different messages.
Description : During the nerve impulse transmission, following ion or ions may play significant roles D A. Sodium B. Potassium C. Chloride D. All of these
Last Answer : All of these
Description : Propagation of action potential is called a. Repolarization b. depolarization c. nerve impulse d. none of them
Last Answer : nerve impulse
Description : A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro- hormonal control system? ... brain. (d) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex.
Last Answer : (a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla.
Description : During the propagation of a nerve impulse, the action potential results from the movement of (a) K+ ions from intracellular fluid to extracellular fluid (b) Na+ ions from extracellular ... extracellular fluid to intracellular fluid (d) Na+ ions from intracellular fluid to extracellular fluid.
Last Answer : (b) Na+ ions from extracellular fluid to intracellular fluid
Description : Impulse of heart beat originates from (a) SA node (b) AV node (c) vagus nerve (d) cardiac nerve
Last Answer : (a) SA node
Description : A resting nerve is relatively resistant to blockade by lignocaine compared to one which is repeatedly stimulated because: A. Lignocaine penetrates resting nerve membrane poorly B. Lignocaine binds ... promotes ionization of lignocaine D. Nodes of Ranvier are inaccessible in the resting state
Last Answer : B. Lignocaine binds more avidly to the inactivated Na+ chan
Description : A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro-hormonal control system ? (1 ... across the cleft and transmit a nerve impulse (4) Hypothalamus activates the parasympathetic division of brain
Last Answer : (2) Sympathetic nervous system is activated releasing epinephrin and norepinephrin from adrenal medulla
Description : Tetrodotoxin blocks nerve impulse/junctional transmission by: A. Anticholinergic action B. Depleting acetylcholine C. Blocking Na+ channels D. Blocking Ca2+ channels
Last Answer : C. Blocking Na+ channels
Description : “Sodium Pump” operates in (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above
Last Answer : Nerve impulse
Description : The short circuit in any winding of the transformer is the result of (a) mechanical vibration (b) insulation failure (c) loose connection (d) impulse voltage
Last Answer : (d) impulse voltage
Description : 1. Sex determination of child is done by whose chromosome? 2. Who is authorised to decide over a dispute regarding disqualification of a member of Parliament? 3. Who firstly demonstrated ... of bargets, coasters and dredgers? 20. In which country was Buddhism first propogated outside India?
Last Answer : Answer : 1. Father 2. President 3. Hertz 4. Mahogany 5. Archaeological excavations 6. December 20 7. International Year of Volunteers 8. Increase growth in lenght 9. Tropical moist deciduous ... . Boxing 17. Herbert Spencer 18. During a Financial Emergency 19. Garden Reach Shipyard 20. Srilanka
Description : Write a and b in the given flow chart of neuron through which information travels as an electrical impulse.Dendrite → a →b → End point of Neuron -Science
Last Answer : a. Axon b. Cell body
Description : How does body temperature affect the conduction speed of an electrical impulse?
Last Answer : What is the answer ?
Description : How standard lightning impulse wave is represented?
Last Answer : Answer: Standard Lighting impulse wave is represented by 1.2/50 micro sec wave
Description : When the nurse observes that the patient's heart rate increases during inspiration and decreases during expiration, the nurse reports that the patient is demonstrating a) sinus dysrhythmia. Sinus dysrhythmia ... occurs when the sinus node regularly creates an impulse at a faster-than-normal rate.
Last Answer : a) sinus dysrhythmia. Sinus dysrhythmia occurs when the sinus node creates an impulse at an irregular rhythm.
Description : Which term is used to describe the ability of the heart to initiate an electrical impulse? a) Automaticity Automaticity is the ability of specialized electrical cells of the cardiac conduction ... the specialized electrical cells of the cardiac conduction system to respond to an electrical impulse.
Last Answer : a) Automaticity Automaticity is the ability of specialized electrical cells of the cardiac conduction system to initiate an electrical impulse.
Description : Computers built before the first generation of computer were: a) Mechanical b) Electro-mechanical c) Electrical d) Both 1 and 2 e) None of these
Last Answer : b) Electro-mechanical
Description : Which of these is the purpose of the power-split device? • To split electrical energy into mechanical energy • To allow both the engine and electric motor to propel the vehicle • To recharge the battery while braking
Last Answer : • To allow both the engine and electric motor to propel the vehicle
Description : Which of these is the purpose of power-split device a) To split Electrical Energy into Mechanical Energy. b) To allow both the engine and Electric motor to propel the vehicle c) To recharge the battery while braking d) To recharge the brakes while driving
Last Answer : b) To allow both the engine and Electric motor to propel the vehicle
Description : Do electrical nerve conduction studies hurt?
Last Answer : I have had them before, and no it does not hurt
Description : If we were to get rid of the hormones within us and electrical nerve impulses of the brain, we would pretty much achieve zombie state, am I right?
Last Answer : Aren’t Zombies dead humans? We’d have to die first, no? Anyway, if we achieved zombie status, we wouldn’t know we’re in paradise so I vote no.
Description : Which process begins after Na influx essentially stops at its plateu a. Depolarization b. Repolarization c. both d. none
Last Answer : Repolarization
Description : The repeatability of NC machine depends on a.control loop errors b.mechanical errors c.electrical errors d.none of the mentioned
Last Answer : b.mechanical errors
Description : By which device mechanical energy is converted into electrical energy? -General Knowledge
Last Answer : Dynamo The device used to convert mechanical energy into electrical energy is called Dynamo.
Description : is An electromagnetic wave is a mechanical wave/true or false?
Last Answer : an electromagnetic wave is not a mechanical wave
Description : What is the name of the device that converts mechanical energy into electrical energy ?
Last Answer : Generator is a device that converts mechanical energy into electrical energy.
Description : Why is a transverse wave called a mechanical wave?
Last Answer : Need answer
Description : How are similarities between thermal energy and electrical energy mechanical energy electromagnetic?
Last Answer : They are both an energy
Description : What is the machine that converts mechanical energy or motion into electrical energy?
Last Answer : generator
Description : Is sanding a board chemical energy to mechanical or electrical energy?
Last Answer : Feel Free to Answer
Description : What is a device that transforms mechanical energy to electrical energy?
Last Answer : An electric generator.
Description : Is heat an electromagnetic wave or mechanical wave?
Last Answer : Radiant heat is electromagnetic radiation.Thermal heat is the micro kinetic energy of the component atomsor molecules of a material substance.The "or" of the question can not be answered because there is no"or" involved.