Investigating the Effect of Exercise on the Heart Rate
Introduction
For it's size the heart has the huge capacity of pumping large amounts
of blood, in the average adult's heart beats 60 to 100 times a minute,
pumps between 70ml and 100ml of blood with each beat, circulates 5 to
6 litres of blood around the body per minute and about 13 litres of
blood per minute during vigorous exercise. The heart will beat more
then 2.5 billion times during an average lifetime. This investigation
will be looking at the effect of exercise on the heart rate.
Aim
The aim of this investigation is to find out how exercise affects the
heart rate, using research & experimenting on changes and increases in
the heart rate using exercise.
Research
â— The heart
The normal heart is a strong, hardworking pump made of muscle tissue.
It is about the size of a person's fist.
The heart has four chambers. The upper two chambers are the right
artium and left atrium, and the lower two are the right ventricle and
left ventricle. Blood is pumped through the chambers, aided by four
heart valves. The valves open and close to let the blood flow in only
one direction.
[IMAGE]
The four heart valves are:
1. the tricuspid valve, located between the right atrium and the
right ventricle
2. the pulmonary (pulmonic) valve, between the right ventricle and
the pulmonary artery
3. the mitral valve, between the left atrium and left ventricle
4. the aortic valve, between the left ventricle and the aorta.
heart_chambers.jpg
Each valve has a set of "flaps" (also called leaflets or cusps). The
mitral valve normally has two flaps; the others have three flaps.
Dark bluish blood, low in oxygen, flows back to the heart after
circulating through the body. It returns to the heart through veins
and enters the right atrium.
1.2 & 1.3 Explain The Cardiac Cycle And Describe How The Heart Rate Is Modified According To The Needs Of The Body
Materials: This Cardiovascular activity was performed by different groups of students who were divided into groups of 4. A low step platform and stopwatch was used in both experiments of this study.
of the heart: one chamber is on the top and one chamber is on the
Furthermore, Aristotle and Galen’s theories contributed to the Renaissance revival of heart anatomy. This reawakening made it possible for physicians to indicate the basic arrangement of the heart. It became commonly accepted that the heart was divided into four parts: two ventricles (lower chambers that pump blood out) and two auricles (upper chamber that r...
The study of cardio physiology was broken up into five distinct parts all centering on the cardiovascular system. The first lab was utilization of the electrocardiogram (ECG). This studied the electrical activities of the heart by placing electrodes on different parts of the skin. This results in a graph on calibrated paper of these activities. These graphs are useful in the diagnosis of heart disease and heart abnormalities. Alongside natural heart abnormalities are those induced by chemical substances. The electrocardiogram is useful in showing how these chemicals adjust the electrical impulses that it induces.
When your heart beats, the first beat represents the AV valves closing to prevent the backflow of blood into the atrium. The second beat is the semilunar valves opening to allow blood into the aorta or pulmonary trunk.
The heart serves as a powerful function in the human body through two main jobs. It pumps oxygen-rich blood throughout the body and “blood vessels called coronary arteries that carry oxygenated blood straight into the heart muscle” (Katzenstein and Pinã, 2). There are four chambers and valves inside the heart that “help regulate the flow of blood as it travels through the heart’s chambers and out to the lungs and body” (Katzenstein Pinã, 2). Within the heart there is the upper chamber known as the atrium (atria) and the lower chamber known as the ventricles. “The atrium receive blood from the lu...
To make sure it is a fair test; the procedure is repeated a couple of
These results make sense because the heart beats faster in order to keep the body’s cells well equipped with oxygen. For one to continue exercising for long amounts of time, cells need to create ATP in order to use energy. Oxygen must be present for the process of creating ATP, which not only explains why higher respiratory rates occur during exercise but also faster heart rates. When the heart is beating rapidly, it is distributes oxygenated blood as fast as the body n...
The heart is two sided and has four chambers and is mostly made up of muscle. The heart’s muscles are different from other muscles in the body because the heart’s muscles cannot become tired, so the muscle is always expanding and contacting. The heart usually beats between 60 and 100 beats per minute. In the right side of the heart, there is low pressure and its job is to send red blood cells. Blood enters the right heart through a chamber which is called right atrium. The right atrium is another word for entry room. Since the atrium is located above the right ventricle, a mixture of gravity and a squeeze pushes tricuspid valve into the right ventricle. The tricuspid is made up of three things that allow blood to travel from top to bottom in the heart but closes to prevent the blood from backing up in the right atrium.
AIM: - the aim of this experiment is to find out what the effects of exercise are on the heart rate. And to record these results in various formats. VARIABLES: - * Type of exercise * Duration of exercise * Intensity of exercise * Stage of respiration
The two major things that will help an athlete while measuring the cardiovascular drift are progression and hydration levels. The heart rate of an athlete working hard during a workout should be no more than their maximum heart rate which is found by, if you’re a female take 226-age, if you’re a male take 220-age. If while doing a workout the maximum heart rate is exceeded by too much it may be necessary to take a break or slow down greatly. This may also help with traking the hydration of an athlete. If an athlete stays hydrated their core temperature will stay regulated which means they won’t sweat as much, which also means the heart won’t be under as much stress while transporting the oxygenated blood throughout the body to the
The heart is a pump with four chambers made of their own special muscle called cardiac muscle. Its interwoven muscle fibers enable the heart to contract or squeeze together automatically (Colombo 7). It’s about the same size of a fist and weighs some where around two hundred fifty to three hundred fifty grams (Marieb 432). The size of the heart depends on a person’s height and size. The heart wall is enclosed in three layers: superficial epicardium, middle epicardium, and deep epicardium. It is then enclosed in a double-walled sac called the Pericardium. The terms Systole and Diastole refer respectively and literally to the contraction and relaxation periods of heart activity (Marieb 432). While the doctor is taking a patient’s blood pressure, he listens for the contractions and relaxations of the heart. He also listens for them to make sure that they are going in a single rhythm, to make sure that there are no arrhythmias or complications. The heart muscle does not depend on the nervous system. If the nervous s...
As humans we need the heart to pump blood all around the body in order
body has to work harder I think that the heart will then increase at a