During Exercise Lab Report

1) Make a graph of resting heart rates from Activity 1. Provide a physiological explanation for fluctuations in resting heart rate over time. Discuss a couple of extrinsic factors that influence the autonomic nervous regulation of resting heart rate.

3. Describe what happens to resistance when blood vessel length increases. Because of the friction between the blood and vessel walls, the resistance increases.

1. Dependent Variable. respiratory volumes 2. Independent Variable. level of physical activity [resting or exercising] 3. Controlled Variables. height; age; sex 4. Which respiratory volume was calculated? Breating rate, TV, ERV, and IRV. 5. What was the purpose of the nose clip? the nose clip was used for the lung function testing to prevent leakage with

Briefly describe how the human heart could compensate for flow rate changes to maintain blood pressure.

Exercise is a strong influencer of both heart rate and blood pressure. Isometric exercise, or exercise that involves muscle contraction but not movement, moderately increases the demand for oxygen in the skeletal muscles. Dynamic exercise, or aerobic exercise involving movement, greatly increases the demand for oxygen in skeletal muscle. Both of these exercise types lead to increase in both systolic blood pressure and heart rate to increase blood flow to the active tissues

The artery’s purpose is to carry blood away from heart at high pressure. An artery is adapted for its role because the artery

Blood pressure is the amount of force and blood being pumped by the heart throughout the body. It is associated with the size and flexibility of the walls of the arteries and the body’s heart rate. The heart beats more rapidly after strenuous exercise, causing the BPM and the blood pressure of the body to increase. Blood pressure increases during exercise because the force of each of the heart’s contractions increases. More contractions means that more blood is pumped with each beat, causing an increase in blood pressure. However, after a period of rest, the heart rate returns to normal and along with that, the blood pressure. The blood vessels become larger as a result and allow the flow of blood to increase. As a result, there is no excess

Capillary beds in your muscles enlarge and deliver more than twelve times as much blood to occupied muscles throughout exercise. Your blood pressure escalates during exercise because larger quantities of nutrient-rich blood flowing through your circulatory system upsurge pressure inside the blood vessels. The cardiovascular system reaps a numerous benefits from regular exercise which can help you live a healthier and longer life. Any form of aerobic exercise such as: swimming and running to dancing or skateboarding, can play a significant role in strengthening the cardiovascular system.

Blood flow is increased due to rise in the levels of nitric oxide which greatly expands the blood vessels, thus aiding vigorous exercise and post-exercise recovery1.

During exercise the blood pressure will increase because the muscles will need more oxygen to use if more exercise needs to be done. As the muscle continues to work, the heart rate must also increase to make sure that enough blood is being pumped around every part of the body. This would mean that systolic pressure increases because of the pressure in your heart when the muscles contract. In the other hand the diastolic pressure should be the same so there should be little or no changes to the pressure. This is because the blood vessel like the arteries become dilated so any heat can be exerted or escape.

Is a condition where your blood pressure is higher than normal. Frequent exercise can help reduce it. The body needs a set amount of blood when resting preferably around 5 litres per minute when the amount of blood ejected from the heart increases. Regular exercise of cardio vascular disease of hypertension because the heart is more efficient of pumping blood around the body reducing high blood pressure.

In this experiment, the controlled variables were the age of the person, length of experiment,

The heart rate increases as activity intensity in the body increases. The cause of this increase in heart rate is due to the working tissues in the body increasing their need for oxygen and nutrients. The heart needs to pump faster to supply the tissues with an adequate amount of oxygen and nutrients needed for the muscles (Tortora & Derrickson, 2014, p. 716). During the increase of activity levels in the body and rise of heart rate, blood pressure is additionally effected because of the increased need of oxygen flow to tissues in use and cardiac output directly affects blood flow (Tortora & Derrickson, 2014, p. 741). Therefore the main focus of this report will be discussing the two main concepts of the effects of increased intensity of exercise on heart rate and blood pressure.

Blood pressure is the force exerted by circulating blood against the walls of blood vessels and usually refers to the arterial pressure of the systemic circulation. Blood pressure is routinely regulated in order to direct appropriate amounts of nutrients and oxygen to specific tissue types. For example, when exercise requires additional supplies of oxygen to skeletal muscles, blood flow to these muscles increases, while blood flow to the digestive organs decreases. Blood pressure can be altered in numerous ways, such as varying cardiac output by changing heart rate or stroke volume, or by changing the resistance to blood flow in the blood vessels. Altering peripheral resistance in the blood vessels is achieved by vasodilation or vasoconstriction, or also by changes in blood viscosity or blood vessel length. The cardiac center stimulates cardiac output by increasing heart rate and contractility. These nerve impulses are transmitted over sympathetic cardiac nerves. The cardiac center inhibits cardiac output by decreasing heart rate. These nerve impulses are transmitted over parasympathetic vagus nerves. The cardiovascular center obtains information about the body’s status through baroreceptors and chemoreceptors. Baroreceptors are sensory neurons that monitor arterial pressure. Major baroreceptors are located in the carotid sinus, the aortic arch, and the right

Chronic responses to the cardiovascular system: Increase in stroke volume: When the size of the heart increases, the blood capacity inside the heart also increases because it stores more blood. This means that the stroke volume can increase. Increase in cardiac output: Cardiac output is the amount of blood pumped by each ventricle per minute. Cardiac output increases 5 to 7 times which means more oxygen can get to the muscles. The bigger the cardiac output depends on how much the stroke volume and heart rate increases.