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 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 : 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 : What is the difference between impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre? -Biology
Last Answer : answer:
Description : The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is
Last Answer : The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is
Description : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon
Last Answer : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon
Description : Which of the following terms is used to describe a tachycardia characterized by abrupt onset, abrupt cessation, and a QRS of normal duration? a) Paroxysmal atrial tachycardia PAT ... fibrillation Atrial fibrillation causes a rapid, disorganized, and uncoordinated twitching of atrial musculature.
Last Answer : a) Paroxysmal atrial tachycardia PAT is often caused by a conduction problem in the AV node and is now called AV nodal reentry tachycardia.
Description : The principal action common to all class I antiarrhythmic drugs is: A. Na+ channel blockade B. K+ channel opening C. Depression of impulse conduction D. Prolongation of effective refractory period
Last Answer : A. Na+ channel blockade
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 : 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 : A nerve impulse is essentially a wave of a. mechanical charge b. electrical charge c. Both d. None
Last Answer : electrical charge
Description : Do electrical nerve conduction studies hurt?
Last Answer : I have had them before, and no it does not hurt
Description : What do you call the electrical conduction in a photosensitive material which is not exposed to radiation? A. Dark conductance B. Pure conductance C. Black out D. Super conductance
Last Answer : A. Dark conductance
Description : Insulators perform which of the following functions? a) Conduction b) Convection c) Provide electrical insulation d) Allows current leakage at interfaces
Last Answer : c) Provide electrical insulation
Description : The heated parts of an electrical machine dissipate heat into their surroundings by which of the following modes of heat dissipation ? (a) Conduction (b) Convection (c) Radiation (d) All ofthe above
Last Answer : (d) All ofthe above
Description : The characteristic feature(s) of dihydropyridine calcium channel blockers is/are: A. They have minimal negative inotropic action on the heart B. They have no effect on A-V conduction C. They do not affect the activation-inactivation kinetics of the calcium channels D. All of the above
Last Answer : D. All of the above
Description : In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is (A) Linear (B) Hyperbolic (C) Parabolic (D) None of these
Last Answer : (C) Parabolic
Description : A body is pushed with a force of 10 N for 0.5 second. The impulse given to the body is a.107 dynes b.50 Ns c.3.5 Ns d.5 Ns e.2.5 Ns
Last Answer : d. 5 Ns
Description : A body of mass `(1)/(4) kg` moving with velocity `12 m//s` is stopped by applying a force of 0.6 N. Then impulse is :-
Last Answer : A body of mass `(1)/(4) kg` moving with velocity `12 m//s` is stopped by applying a force of 0.6 N. Then ... A. 7.2 Ns B. 3 Ns C. 2.4 Ns D. None
Description : How does a sensory impulse move throughout the body?
Last Answer : What is the answer ?
Description : The rate of change of linear momentum of a body falling freely under gravity is equal to it's (1) Kinetic Energy (2) Weight (3) Potential Energy (4) Impulse
Last Answer : (2) Weight Explanation: Rate of change of impulse equals the force. In case of freely falling body the only force is the weight.
Description : With regard to knee jerk: a. it is a monosynaptic reflex b. the impulse travels via type Ia afferent fibres c. the Golgi body is an important component d. the stimulus begins in the tendon
Last Answer : the impulse travels via type Ia afferent fibres
Description : In the neurones: a. the axons convey impulse away from the cell body b. neurotransmitters are synthesized in the cell bodies and then transported to the axons c. the condition ... with fibre diameter d. the excitability is increased if the extracellular calcium concentration is decreased
Last Answer : the axons convey impulse away from the cell body
Description : Which of following statement is incorrect according to BBCR Repertory Options: 1) Radiating pain is given under Sensation & Complaints in General 2) Typhoid fever is given under Fever - Pathological types 3) Pregnancy is given under Sexual Impulse 4) Tetters is given in Skin & Exterior body
Last Answer : Correct Answer: 3) Pregnancy is given under Sexual Impulse
Description : What lipid increases actin potential conduction speed?
Last Answer : Need answer
Description : Atmospheric temperature increasing at the higher altitudes is called – (1) Radiation (2) Inversion (3) Conduction (4) Convection
Last Answer : (2) Inversion Explanation: The reversal of the normal behaviour of temperature in the troposphere in which a layer of cool air at the surface is overlain by a layer of warmer ... as temperature inversion. Inversions play an important role in determining cloud forms, precipitation, and visibility.
Description : Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in – (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection
Last Answer : (2) Convection Explanation: The process of heat transfer from one place to an-other place without the movement of particles is called conduction Example: Heat transfer through Metal rods. On the ... heated particles of the substance. The fluids (liquids and gases) are heated by this process.
Description : Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in - (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection
Last Answer : (2) Convection Explanation: The process of heat transfer from one place to another place without the movement of particles is called conduction,
Description : A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The ... = 283 s (B) t = 356 s (C) t = 400 s (D) t = 800 s
Last Answer : (D) t = 800 s
Description : Unsteady state heat conduction occurs, when (A) Temperature distribution is independent of time (B) Temperature distribution is dependent on time (C) Heat flows in one direction only (D) Three dimensional heat flow is concerned
Last Answer : (B) Temperature distribution is dependent on time
Description : Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that (A) There is no internal heat generation (B) Boundary surfaces are isothermal (C) Material is anisotropic (D) Constant temperature gradient exists
Last Answer : (C) Material is anisotropic
Description : Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because (A) Convection becomes important (B) Conduction becomes important (C) Radiation becomes important (D) Sub-cooled boiling occurs
Last Answer : (C) Radiation becomes important
Description : The conduction velocity of the nerve fibres is increased by: a. decreased temperature b. increased concentration of the external sodium ions e. increased axon diameter d. myelination
Last Answer : myelination
Description : Pick out the correct statement. (A) 1 kcal/hr.m.°C is equal to 1 BTU/hr. ft.°F (B) In steady state heat conduction, the only property of the substance which determines the ... in the direction of temperature rise (D) In heat transfer by forced convection, Grashoff number is very important
Last Answer : (B) In steady state heat conduction, the only property of the substance which determines the temperature distribution, is the thermal conductivity
Description : In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by (A) Conduction (B) Convection (C) Radiation (D) Cannot be predicted
Last Answer : (C) Radiation
Description : Maximum heat transfer in high temperature furnaces is by (A) Conduction (B) Convection (C) Radiation (D) Either (A), (B) or (C); depends on the type of furnace
Description : In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer will be (A) Conduction (B) Radiation (C) Natural convection (D) Forced convection
Last Answer : (B) Radiation
Description : Super conduction in metals is observed at a temperature of __________ °K. (A) 100 (C) About 273 (D) About 373
Last Answer : (B) >100
Description : reduction in thermal resistance during heat transfer does not occur in the (A) Convection heat transfer by stirring the fluid and cleaning the heating surface (B) Conduction heat transfer by ... Radiation heat transfer by increasing the temperature and reducing the emissivity (D) None of these
Last Answer : Option C
Description : In the stratosphere, why does temperature increase with increasing height? (a) Conduction. (b) Convection. (c) Greater absorption of ultraviolet radiation at the top of the strato- sphere. (d ... you go up through the strato- sphere, thus the ideal gas law requires temperature to increase too.
Last Answer : Greater absorption of ultraviolet radiation at the top of the strato- sphere.
Description : Which of the following statements regarding evacuated tube collectors (ETC) are true? i) ETC is used for high temperatures upto 150oC ii) because of use of vacuum between two concentric glass tube, higher amount of heat is ... upon the ambient temperature i & iii b) ii & iii c) i & iv d) i & ii
Last Answer : d) i & ii
Description : C and Si both have same lattice structure, having 4 bonding electrons in each. However, C is insulator where as Si is intrinsic semiconductor. This is because (1) The four bonding electrons in the case of C ... the case of C lie in the second orbit, whereas in the case of Si they lie in the third
Last Answer : (4) The four bonding electrons in the case of C lie in the second orbit, whereas in the case of Si they lie in the third
Description : The heat dissipated by from a surface depends upon its temperature and its characteristics like colour, roughness etc. (a) conduction (b) convection (c) radiation (d) any ofthe above
Last Answer : (c) radiation
Description : Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection
Last Answer : Convection
Description : Atmospheric temperature increasing at the higher altitudes is called (1) Radiation (2) Inversion (3) Conduction (4) Convection
Last Answer : Inversion
Description : Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place (A) Between two bodies in physical contact ... of a body to the another part of the same body (D) Both 'b' & 'c'
Last Answer : (B) Between two bodies not in physical contact with each other
Description : Differences between the M cells and P cells include: a. M cells have larger cell bodies than P cells b. M cells have slower conduction rate than P cells c. M cells have larger receptive field than P cells d. M cells do not synapse in lateral geniculate body whereas P cells do
Last Answer : M cells have larger receptive field than P cells
Description : An electroscope charged WITHOUT contacting a charged body is charged by: w) induction x) conduction y) convection z) insulation
Last Answer : ANSWER: W -- INDUCTION