Module 8 Intro
1. Module 8 Intro
1.15. Page 6
Module 8—Circulation, Immunity, and Excretion
Lesson Summary
In this lesson you explored the following essential questions:
- What is the relationship between the heart rate, blood pressure, and exercise?
- How can technology treat disorders of the circulatory system?
Average blood pressure and heart rates can be attributed to healthy lifestyles. This can include exercise and a balanced diet. Heart rate and blood pressure are a response to either a cardiovascular disorder or lifestyle choices. The heart rate increases as cellular respiration increases during vigorous exercise.
Exercise strengthens the heart muscle and can help prevent other cardiovascular diseases such as high blood pressure. Heart conditions and blockages in major blood vessels can be treated with advanced surgeries, while the symptoms can be managed with medicine. Diagnosing these diseases utilizes advanced imaging technology.
Lesson Glossary
arterial pressure: the pressure blood exerts on artery walls
congenital: appearing at birth due to a heredity/genetic abnormality or from complications during a pregnancy
diastole: the relaxation of the heart
mitral stenosis: a heart valve disorder that narrows or obstructs the mitral valve opening
Narrowing the mitral valve prevents the valve from opening properly and obstructs the blood flow from the left atrium to the left ventricle. This can reduce the amount of blood that flows forward to the body.
sphygmomanometer: a device used to measure blood pressure
stethoscope: an acoustic medical device designed to listen to internal sounds of the human body
systole: a contraction of the heart