Chapter 3 Flashcards
How a trainer would manually monitor heart rate in beats per minute. Where is the best location? When is it best to measure resting heart rate? Should you press hard or gently? How Should you measure someone’s pulse during exercise?
A trainer should manually monitor heart rate using two fingers placed gently on the radial artery. Count the number of beats in 60 seconds to determine beats per minute. If measuring the pulse during exercise count the number of beats in 6 seconds and multiply by 10. It is best to measure resting heart rate after waking up in the morning.
Discuss the relationship between stroke volume, heart rate and cardiac output.
Cardiac Output is made up of Stroke Volume multiplied by Heart Rate. Stroke volume is the volume of blood ejected from the left ventricle from every beat. Heart Rate is the number of beats per minute. Cardiac Output is the total volume of blood pumped from the heart in one minute.
List the order in which blood travels through the heart. What chamber is largest and forces oxygenated blood to the systemic circuit?
Blood travels through the heart in the following order: right atrium, right ventricle, pulmonary veins, left atrium, left ventricle, aorta. The left ventricle is the largest and forces oxygenated blood to the systemic circuit.
Lis the 5 types of blood vessels in the order blood travels through in the systemic circuit
Blood travels through the systemic circuit from the arteries to the arterioles to the capillaries to the venules to the veins.
List the conducting airways and respiratory airways.
The Conducting airways consist of:
- Nasal Cavity
- Oral Cavity
- Pharynx
- Larynx
- Trachea
- Primary Bronchi
- Bronchioles
The respiratory airways are where gas exchange occurs and consists of:
- Alveoli
- Alveolar Sacs
List and describe the 3 main functions of blood
The three main functions of blood include Transportation. Regulation and protection. Transportation focuses on transporting oxygen, nutrients, waste, hormones and heart. Regulation focuses on maintaining an appropriate blood pH level and body heat. Protection refers to the clotting mechanism of blood and the immune cells that fight disease.
