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What region of the heart depolarizes spontaneous?
pacemaker cells
Does the AV node depolarizes spontaneously at about 40-60 times per minute?
100
The SA node is the normal pacemaker of the heart because the SA node?
depolarizes to its threshold potential before other pacemakers in the heart
Why is the heart actually stopped when the defibrillator pads are applied?
Defibrillation depolarizes all of the heart tissue at once. This usually will terminate abnormal heart rhythms with the hope that a normal one will take over.
The SA node depolarizes more frequently under the influence of?
The SA node depolarizes more frequently under the influence of the sympathetic nervous system. This is due to the release of norepinephrine, which binds to beta-adrenergic receptors in the SA node, leading to an increase in heart rate.
When a neuron depolarizes this runs out of the axon?
Potassium.
Is the heart in the epigastric region?
The heart is located in the epigastric region. More specifically, it is located in the mediastinum, which is in the epigastric region.
What region is heart located?
Epigastric region
If a neurotransmitter depolarizes the postsynaptic membrane it is referred to as?
Excitatory neurotransmitter.
What is the difference between emitting X rays spontaneously and non-spontaneously?
the different between emitting x-rays spontaneously and non-spontaneously is that spontaneously means sending out and non-spontaneously means without effort.
Does calcium depolarize or hyperpolarize cell membranes?
Calcium depolarizes cell membranes.
In what direction does heat flow on its own spontaneously?
Heat flows spontaneously from a region of higher temperature to a region of lower temperature. This is known as the second law of thermodynamics, which states that heat always naturally flows from hot to cold in order to reach thermal equilibrium.
