The term excitation conduction refers to the transmission of excitation in nerve or muscle cells. Excitation conduction is also often referred to as conduction of excitation, but from a medical point of view, this term is not entirely correct. What is excitation conduction? The term excitation conduction refers to the transmission of excitation in nerve … Excitation Conduction: Function, Tasks, Role & Diseases
The threshold potential describes a specific charge difference at the membrane of excitable cells. When the membrane potential attenuates to a certain value in the course of depolarization, an action potential is induced via the opening of voltage-dependent ion channels. The value to be reached in each case, which is necessary for the generation of … Threshold Potential: Function, Tasks, Role & Diseases
Sperm competition is the term used when sperm fight for an egg. For example, each ejaculation of a man’s sperm contains millions of sperm, with only one egg ready for fertilization, and the fastest, most vital, and most motile sperm decides fertilization in its favor. What is sperm competition? Sperm competition corresponds to the competitive … Sperm Competition: Function, Tasks, Role & Diseases
The abdominal wall reflex is an intrinsic reflex of the human body that leads to involuntary contraction of the abdominal muscles. The function of the abdominal wall reflex is to protect the abdominal muscle from passive overstretching, thereby preventing damage to it. Its absence may indicate damage to the pyramidal tract, for example, as a … Abdominal Wall Reflex: Function, Tasks, Role & Diseases
Lidocaine is a drug in the local anesthetic class that also acts as an antiarrhythmic agent. It belongs to the sodium channel blocker group. What is lidocaine? Lidocaine is a drug in the local anesthetic class that also acts as an antiarrhythmic agent. The drug lidocaine was the first amino-amide local anesthetic. It was synthesized … Lidocaine: Effects, Uses & Risks
The Ferguson reflex is a birth reflex triggered by receptors in the vagina and cervix. Once the fetus presses on the organs, the cells mediate a release of the hormone oxytocin, which induces labor. If there are lesions in the spinal cord, this reflex may be abolished or diminished. What is the Ferguson reflex? The … Ferguson Reflex: Function, Tasks, Role & Diseases
The excitatory postsynaptic potential is an excitatory potential in the postsynaptic membrane of neurons. The individual potentials are summed spatially and temporally and can give rise to an action potential. Transmission disorders such as myasthenia gravis or other myasthenias disrupt these processes. What is the excitatory postsynaptic potential? The excitatory postsynaptic potential is an excitatory … Excitatory Postsynaptic Potential: Function, Role & Diseases
Sinus rhythm is the term used to describe the normofrequency and regular heartbeat in humans. This rhythm is formed in the sinus node. What is sinus rhythm? Sinus rhythm is the term used to describe the normofrequency and regular heartbeat in humans. Sinus rhythm is the normal heart rhythm. The number of heartbeats per minute … Sinus Rhythm: Function, Tasks, Role & Diseases
Priming is an effect of neuroanatomy and is also referred to as pathwaying. In this process, a stimulus that has already been received earlier is processed more effectively by the nervous system when it is received repeatedly. Degenerative brain diseases make priming more difficult. What is priming? Priming is a learning process that directly affects … Priming: Function, Tasks, Role & Diseases
Refractory period is the phase during which re-excitation of neurons is not possible after the arrival of an action potential. These refractory periods prevent retrograde propagation of excitation in the human body. In cardiology, a disturbance of the refractory period is present, for example, in phenomena such as ventricular fibrillation. What is refractory period? The … Refractory Period: Function, Tasks, Role & Diseases
The active ingredient cisapride is one of the prokinetics that increase motility of the gastrointestinal tract. The active ingredient causes severe cardiac side effects and has therefore been withdrawn from the market in many countries. Its use is not recommended; safer drugs from the prokinetic group are available. What is cisapride? Cisapride belongs to the … Cisapride: Effects, Uses & Risks
Pacing potential is the action potential of the pacemaker cells in the heart. It is a prerequisite for a regular heartbeat and thus elementary for cardiac function. What is the pacemaker potential? Pacing potential is the action potential of the pacemaker cells in the heart. The normal heart rate at rest in a healthy person … Pacemaker Potential: Function, Tasks, Role & Diseases
