Cardiac Conduction Flashcards
After travelling from the SAN and then spreading through the atria, where does the impulse travel to?
Atrioventricular node
(From the atria) the impulse then travels through… (2)
Through the Bundle of His and Purkyne tissue
What can detect the currents generated by the SAN?
Electrocardiograph
A heart beat that is too fast is known as?
A tachycardia
A heart beat that is too slow is known as?
Bradycardia
What region of the brain regulates the SAN?
Medulla
What two nervous systems control the SAN?
Sympathetic and parasympathetic
Which nervous system accelerates heart rate?
Sympathetic
What hormone is released by the sympathetic nervous system that increases heart beat
Adrenaline
Which nervous system slows heart rate?
Parasympathetic
What hormone is released by the parasympathetic nervous system that slows down heart rate?
Acetylcholine
During stress/exercise what organ increases heart rate?
The adrenal glands
