Chapter 8 Flashcards
(11 cards)
What is the Cardiac Cycle?
The series of events that occur through one heartbeat, including diastole (relaxation) and systole (contraction)
What occurs during diastole?
The heart is filling with blood
What occurs during systole?
The heart contracts and ejects blood
What is the pathway of blood through the heart starting from the right atrium?
Right atrium → Tricuspid valve → Right ventricle → Pulmonary semilunar valve → Lungs → Pulmonary veins → Left atrium → Bicuspid (Mitral) valve → Left ventricle → Aortic semilunar valve → Aorta → Descending or ascending aorta → Arteries → Arterioles → Capillaries → Venules → Veins → Inferior vena cava → Right atrium
What is cardiac output?
A measure of the amount of blood the heart pumps in a given time
What is heart rate (HR)?
Beats per minute
What is blood pressure?
The force of blood against the walls of arteries
True or False: People with high blood pressure always feel symptoms.
False
What are some risk factors for high blood pressure?
- Older age
- Genetics
- Being overweight or obese
- Not being physically active
- High-salt diet
- Drinking too much alcohol
What lifestyle changes can help lower blood pressure?
- Eating a healthier diet
- Quitting tobacco
- Being more active
What may some people still need to take in addition to lifestyle changes to manage blood pressure?
Medicines
