Each week, the discussion questions will examine issues in the reading. This thread is meant to foster a better understanding of the anatomy and physiology of the human body and how that knowledge is applied to in real life situations. Discussion responses should be on topic, original, and contribute to the quality of the discussion by making frequent informed references to lesson material. Initial discussion responses should be around 100 words; responses to your classmates or instructor should be around 75 words. Make two or more responses to classmates that are thoughtful and that advance the discussion of each topic. Your initial response is to be made no later than Saturday 11:59 PM of the current unit. Additional responses are to be made no later than Tuesday 11:59 PM of the current unit. Your posts are to be substantive, referenced and free of grammatical and spelling errors. When you are ready, respond to one of the topics below. Please be sure to specify which topic you are responding to.
1. Discuss the different types of blood vessels and how their structure is uniquely suited to their functions. 2. Choose a major region of the body (for example, the thorax) and discuss the arteries and veins of that region. 3. Discuss the positive and possible negative effects of exercise on the cardiovascular system. 4. Identify and discuss the primary factors involved in the generation and regulation of blood pressure and explain the relationships among these factors. 5. Explain why a pressure difference must exist between the aorta and the right atrium. 6. Explain hepatic portal circulation. How is it different from normal circulation, and what advantages are gained from this type of circulation?
This is a fun topic for a fitness trainer. The cardiovascular system is complex, but it’s even more complex when you start to factor in exercise while explaining it. Aerobic fitness is an important component of physical fitness. When your muscles need oxygen, your aerobic (cardiovascular) system must be able to efficiently deliver it to them. When your body has waste products that need to be expelled (e.g. carbon dioxide and metabolic waste products), your heart-lung complex must be up to the task. These two tasks form the functional basis of aerobic fitness. Positive effects include increasing your level of available energy, aid in relieving depression, reduce the risk of heart disease, increase the good (HDL) cholesterol.
Everyone needs to be able to efficiently take oxygen into their lungs and blood and pump it to their working muscles where it is utilized to oxidize carbohydrates and fats to produce energy. If you are concerned about your health, particularly the risk of heart disease, you need to accept the fact that aerobic training can have a critical effect on the quantity and quality of your life. Some negative effects of exercise on the cardiovascular system can include a possible heart attack or stroke.
Some people can tend to push themselves to hard or they can start off working out by pushing their heart a little harder than it’s used to. It’s not a very good idea to go out and try to run a marathon if you’ve spent most of your life sedentary. I used to be one of those people until I found out in 2007 that I had Tachycardia (a heart rate that is too fast). I had to adjust my workouts to accommodate the situation to include slowing down my runs and taking longer rest intervals when lifting weights.