Tag: transport in mammals
Questions Related to transport in mammals
Which of the following hormone regulates the cardiac activity?
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Epinephrine
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Parathrome
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Thymosine
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None of the above
The cardiac activity is controlled by the sympathetic nervous system through the epinephrine. It fastens the heartbeat and the cardiac output so that more concentration of oxygen can be supplied to the body parts.
The ion that always keeps the cardiac muscle unit in contracting state is
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Sodium
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Potassium
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Calcium
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Magnesium
The calcium ions are responsible for muscle contraction by generating the action potential in the muscle cells. More influx of calcium ions may contract the heart muscle to a prolonged state of contraction, which will lead to abnormal increase in the heart rate.
EEG can help in diagnosing certain conditions like
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Epilepsy
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Encephalitis
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Dementia
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All of the above
An electroencephalogram (EEG) is a test that measures and records the electrical activity of your brain by using sensors (electrodes). EEG is most often used to diagnose epilepsy, which causes abnormalities in EEG readings. It is also used to diagnose sleep disorders, coma, encephalopathies, and brain death. EEG used to be a first line method of diagnosis for tumors, stroke and other focal brain disorders.
MEG is
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Magnetoencephalography
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Magnetoelectron transport
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Metallic emission tantrum
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Mixed electronic tachycardia
Magnetoencephalography (MEG) is a non-invasive neurophysiological technique that measures the magnetic fields generated by neuronal activity of the brain. The spatial distributions of the magnetic fields are analyzed to localize the sources of the activity within the brain, and the locations of the sources are superimposed on anatomical images, such as MRI, to provide information about both the structure and function of the brain.
Who was first to record EEG of man?
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Hans Berger
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Galileo Galilei
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Willem Einthoven
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Sanctorius
Electroencephalography (EEG) is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain. German physiologist and psychiatrist Hans Berger recorded the first human EEG in 1924.
Heart beat is accelerated by
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Sympathetic nerves and acetylcholine
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Cranial nerves and adrenaline
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Cranial nerves and acetylcholine
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Sympathetic nerves and epinephrine.
Human/mammalian/elephant heart is
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Myogenic
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Neurogenic
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Cardiogenic
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Digenic.
Which term does not apply to human heart?
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Neurogenic
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Pacemaker
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Few chambered
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Mitral valve
Which of the following statements is not true?
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Regulation of blood vessel diameter originates from the vasomotor centre of the pons
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Baroreceptors may stimulate the vasomotor center
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Chemoreceptors are particularly sensitive to blood levels
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Cerebral cortex can play a role in regulating blood pressure
The vasomotor center is a portion of the medulla oblongata, that together with the cardiovascular & respiratory centers regulates blood pressure too.
Regarding circulatory adjustments during exercise which of the following is correct?
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The cardiac output increases more than tenfold in severe exercise.
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The increase in cardiac output during exercise is mainly due to an increase in stroke volume.
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The increase in stroke volume seen in exercise occurs despite a smaller and end - diastolic volume.
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In sever exercise the mean arterial pressure is unchanged because diastolic pressure.