FREE Bachelor of Biomedical Engineering Questions and Answers
The change in electrical potential caused by a pulse traveling along a muscle cell or nerve cell's membrane is known as .
When the potential of the membrane at a certain axonal site rapidly rises and falls, an action potential is produced. Adjacent places are similarly depolarized as a result of this depolarization. The relative static membrane potential of a dormant cell is known as the resting membrane potential or the resting potential.
What is measured with the electrooculography (EOG/E.O.G.) technique?
A method for determining the potential of the corneal retinal standing potential, which exists between the front and back of the human eye, is called electrooculography (EOG / E.O.G). The electrooculogram signal that results from this process. The two main uses are for ophthalmology diagnosis and documenting eye movements.
Buffer amplifier transforms
Power line interference and motion artifacts are the two main sources of noise. A buffer amplifier is a typical method for reducing noise in signals from dry electrodes. An impedance converter, or buffer amplifier, transforms high-impedance signals into low-impedance signals.
What is the name for the generally constant membrane potential of dormant cells?
The relative static membrane potential of a dormant cell is known as the resting membrane potential or the resting potential. In other words, if a neuron's resting membrane potential is at -70 mV (mV is a millivolt), it means that the neuron's interior is 70 mV negative of its outside.
Which of the following is an ECG acquisition system that is wireless?
A smart pad is a device that shows patients' ECG data without of sticky pads, cables, or direct physician involvement. In an array of Cu/Ni fabric-based electrodes patterned on a thin pad on which the patient is lying, the system automatically chooses three electrodes. A differential three-lead measurement of the patient's ECG is obtained using the chosen electrodes, which is then wirelessly sent and shown on a laptop computer.
Paste for electrodes
An electrolyte or electrode paste is typically used as an interface between the electrode and the surface of the event source in order to produce a clearly established contact (low contact impedance). It is positioned in between the electrode and the skin. It aids in improving signal acquisition.
The Ag-AgCl electrode's response to an increase in chloride deposit is .
According to studies, the electrode's resistance was caused by various layers of chloride. There is an ideal chloriding process that results in the lowest impedance. Both above and below that number, there is a high impedance.
Pregelled disposable electrodes' primary design element that contributes to lowering the likelihood of artifacts, drift, and baseline wandering is .
The provision of high absorbency buffer layers with isotonic electrolyte is the primary design element of the pregelled disposable electrode that aids in lowering the potential for artifacts, drift, and baseline wandering. This layer tries to keep the polarization linked to the half-cell potential constant while absorbing the impacts of the electrode's mobility in reference to the skin.
The electric potential difference coming from the live tissues or cells is indicated by deep-seated electrodes.
The electric potential difference arising inside of live tissues or cells is indicated by deep-seated electrodes. Surface electrodes refers to the electric potentials that form on the skin's surface outside of biological tissues. Deep-seated electrodes include needle electrodes, for instance.
Another name for the tricuspid valve is .
Between the right atrium and ventricle, it is situated. There are three cusps or flaps on it. It stops the right ventricle's blood from flowing backward into the right atrium.
EKG is short for
The process of measuring the electrical activity of the heart over time using anodes placed on the skin is called electrocardiography (ECG or EKG). It might be understood as the heartbeat represented electrically. Brain electrical activity is recorded via electroencephalography.
The primary ion that is not connected to the process of creating cell potentials is .
The main ions involved in the phenomenon of creating cell potentials are sodium (Na+), potassium (K+), and chlorine (Cl-). The presence of Na+ outside the cell membrane produces a positively charged environment there. The presence of Cl- inside the cell membrane is what's causing the hostile environment there.
Electrodes carry information from the tissue's _________ to the electronic conduction that is required for measurement.
Electrodes convert tissue's ionic conductivity into its electronic conduction, which is crucial for taking measurements. To lower skin contact impedance, an electrolytic paste is placed between the electrodes and the skin. Ionic conduction from the skin to the electrodes is also made easier by the electrolyte.
Impedance pneumography is a method frequently employed to keep track of a person's .
Impedance pneumography is a method frequently used to keep track of someone's breathing rate. It can be applied with either two or four electrodes. The resistance between the skin and the electrode is known as skin impedance. ECG is the term for heart rate measurement.
Muscle palsies indicate
The adjective "palsied" denotes paralysis. It refers to a muscle over which a person no longer has any control (cannot move). Muscles under a person's entire control are those that are considered voluntary. The muscles that an individual has no control over are known as involuntary muscles, such as the muscles in the heart wall.
Bioelectric potential's natural source is .
At the cellular level, bioelectric potentials are produced, and their source is ionic in nature. K+, Na+, and Cl- are the dominant ions. Commonly used cells, such as the galvanic cell, exhibit electronic potential. Nowhere is mechanical potential to be discovered. Electricity contains electrical potential.