39 Questions
What is the term for the cyclical pattern of heart contractions and relaxations?
Cardiac cycle
During which phase of the cardiac cycle does the ventricle contract?
Systole
What is the characteristic of blood pressure during systole?
High pressure
What happens to the ventricles during diastole?
They relax
What is the term for the active contraction of ventricles?
Systole
The cardiac cycle is a pattern of heart contractions and relaxations that occurs in a random sequence.
False
During systole, the ventricles fill with blood from the atria.
False
The pressure in the ventricles is low during systole.
False
Diastole is the phase of the cardiac cycle where the ventricles actively contract.
False
The atria fill with blood during systole.
False
The cardiac cycle is a pattern of heart contractions and relaxations that occurs in a constant sequence.
True
During diastole, the ventricles empty into the aorta and pulmonary arteries.
False
The phase of the cardiac cycle characterized by ventricular relaxation is called systole.
False
The heart contracts and relaxes in a cyclical pattern in response to mechanical changes within the cells.
False
Blood pressure is high during diastole.
False
What is the purpose of maintaining blood pressure within an ideal range?
To prevent organ damage and ensure sufficient blood supply to organs
What happens to blood pressure during systole?
It increases
What is the consequence of blood pressure being too low?
Inadequate blood supply to organs
What is the term for the ventricular relaxation phase of the cardiac cycle?
Diastole
What is the result of high blood pressure?
Organ damage
What system helps maintain blood pressure within the ideal range?
Nervous detection and hormonal response
The heart contracts and relaxes in a cyclical pattern in response to ______ changes within the cells.
electrical
The ______ contraction of ventricles is called systole.
active
If the blood pressure is too high, it can cause ______ to the tissues.
damage
If the blood pressure is too low, it won't supply the organs with enough ______ or oxygen.
blood
The ______ of ventricles from the atria occurs during diastole.
filling
High blood pressure is also known as ______.
hypertension
Match the following phases of the cardiac cycle with their characteristics:
Systole = Ventricular contraction and high pressure Diastole = Ventricular relaxation and low pressure Ventricular filling = Filling of ventricles from the atria Ventricular emptying = Emptying of ventricles into the aorta and pulmonary arteries
Match the following terms with their definitions:
Hypertension = High blood pressure Hypotension = Low blood pressure Systole = Ventricular contraction Diastole = Ventricular relaxation
Match the following consequences with the corresponding blood pressure condition:
Organ damage and tissue damage = High blood pressure Not enough oxygen or nutrients supplied to the tissue = Low blood pressure Cell death = High blood pressure Tissue waste products build up = Low blood pressure
Match the following statements with the correct phase of the cardiac cycle:
The ventricles contract = Systole The ventricles fill with blood from the atria = Diastole The ventricles empty into the aorta and pulmonary arteries = Systole The ventricles relax = Diastole
Match the following systems with their functions in maintaining blood pressure:
Stretch receptors in blood vessels = Detecting blood pressure changes Nervous detection and response = Responding to blood pressure changes Hormonal system = Regulating blood pressure Cardiac cycle = Maintaining blood pressure within a range
Match the following phrases with their corresponding descriptions:
ACT SYSTematically = Remembering systole as active contraction DIA PASSIVEly = Remembering diastole as passive relaxation Cardiac cycle = Cyclical pattern of heart contractions and relaxations Ideal range = Range of blood pressure to prevent damage
Match the following phases of the cardiac cycle with their characteristics:
Systole = Ventricular relaxation and low blood pressure Diastole = Ventricular contraction and high blood pressure
Match the following blood pressure conditions with their consequences:
Hypertension = Insufficient oxygen/nutrient supply to tissues Hypotension = Organ damage and tissue damage
Match the following systems with their functions in maintaining blood pressure:
Stretch receptors = Detecting changes in blood pressure Nervous system = Responding to changes in blood pressure Hormonal system = Regulating blood pressure Immune system = Responding to changes in blood pressure
Match the following descriptions with the correct phase of the cardiac cycle:
Ventricles fill with blood from the atria = Diastole Ventricles contract and empty into the aorta/pulmonary arteries = Systole Ventricles relax and contract simultaneously = Neither Ventricles stop functioning = Neither
Match the following terms with their definitions:
Cardiac cycle = Random pattern of heart contractions and relaxations Systole = Ventricular contraction Diastole = Ventricular relaxation
Match the following characteristics with the correct phase of the cardiac cycle:
Active ventricular contraction = Systole Passive ventricular relaxation = Diastole Active atrial contraction = Systole Passive ventricular contraction = Diastole
Test your knowledge of the cardiac cycle, including the phases of systole and diastole, and how they relate to ventricular contraction and relaxation. Learn how to remember the key differences between these two critical phases of heart function.
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