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What happens when the heart's electrical impulse reaches the purkinje fibers?
Wiki User
∙ 11y ago
the heart rest and you can really thank God for that one
Wiki User
∙ 11y ago
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Atrioventricular node at the bottom of the?
The heart beats regularly because it has it's own pacemaker. The pacemaker is a small region of muscle called the sinoatrial, or SA, node. It is in the upper back wall of the right atrium. The node triggers an impulse that causes both atrium to contract. Very quickly, the impulse reaches the atrioventricular, or AV, node at the bottom of the right atrium. Immediately, the atrioventricular node triggers an impulse that causes both ventricles to contract.
What happens when blood reaches the vein?
Blood flows through veins after delivering oxygen to the body.
Where does the atria located?
The Heart's own pace makerThe heart beats regularly because it has it's own pacemaker. The pacemaker is a small region of muscle called the sinoatrial, or SA, node. It is in the upper back wall of the right atrium. The node triggers an impulse that causes both atrium to contract. Very quickly, the impulse reaches the atrioventricular, or AV, node at the bottom of the right atrium. Immediately, the atrioventricular node triggers an impulse that causes both ventricles to contract.
What is responsible for initiating the heartbeat?
There is a group of cells in the heart called the "pacemaker" that sends out a nerve shock to initiate a heartbeat. It also changes the pulse depending on certain external conditions to maintain homeostasis. -Richard
Light reaches areas that are not in direct light by means of?
Light reaches areas that are not in direct light by means of indirect light. The indirect light reaches the areas by reflecting off other surfaces.
True or false when an impulse reaches a synapse an electrical spark jumps the gap?
TRUE
What happens when an impulse reaches the end of an axon?
It reaches the synapse and sends neurotransmitters to start a new impulse to the next neuron
When an electrical impulse reaches the AV node it is slowed for a brief period of time so that?
blood can pass from the atria to the ventricles.
When does the human heart rest?
The electrical impulse reaches all the muscle tissue in the ventricles, and the ventricles contract. This electrical conduction pattern occurs approx. every 0.8 seconds.
State why there is a brief delay in the transmission of an impulse across the synapse?
The impulse must go from one neuron to the next. To do this, it must change from an electrical to a chemical signal, and back to an electrical signal when it reaches the next neuron. Electrical signals are impossibly fast, but neurotransmitters cannot cross a synapse that fast. So, the impulse is at its slowest point when it crosses the synapse.
During a reflex the nerve impulse reaches?
the brain
When an impulse reaches the end of a neuron it tiggers the releases of?
Neurotransmitters
What muscles are used when you do step ups?
Various muscles of lower limb and back and hip.Each nerve impulse begins in the dendrites of a neuron's. the impulse move rapidly toward the neuron's cell body and then down the axon until it reaches the axon tip. a nerve impulse travels along the neuron in the form of electrical and chemical signals.
During neurotransmission when the electrical impulse reaches the end of the axon it crosses a gap called a?
The impulse itself does not actually cross the gap, which is called a synapse by the way, instead it stimulates the realease of a neurotransmitter from vesicles. When the neurotransmitter reaches the other side of the synapse it binds proteins on the opposing membrane and in doing so stimulates the membrane to continue the action potential on the mect cell.
An impulse reaches the CNS from the PNS via the?
Afferent nerves
How does electricity move through the heart?
The electrical impulse is generated in SA node. It travels along the walls of the atria. Then it reaches the AV node. Here the impulse is slowed down for some time. Then it enters the bundle of His. It rapidly passes down to left and right bundle branches. Then the impulse spreads to the muscle fibers of the walls of the ventricles, including the papillary muscles.
If you are stung by a bee you don't feel any pain until the impulse reaches your?
When stung by a bee a person will not feel any pain until the impulse reaches their brain. The brain is the center of a humans nervous system.
