The process of ventilation provides air into the alveoli of the lungs. This is where gas exchange occurs. Gases diffuse across the membrane between the alveoli and the capillaries into the bloodstream according to Fick’s law: the rate of diffusion of a gas tissue is proportional to the tissue area, difference in partial pressure and is inversely proportional to the thickness , i.e. oxygen passes into the blood from alveoli and carbon dioxide exits the blood into the alveoli. The atmosphere consists of oxygen, nitrogen and carbon dioxide as well as other gases.
The heart forces the ‘oxygenated’ blood through a range of connecting blood vessels specifically speaking arteries which travel around your body providing your cells with the necessary materials that the blood contains. As the blood reaches your cells the oxygen is released in order for the cells to function. The cells then give out waste materials which can include co2 and water. In order for your blood to receive these waste products they absorb it. We now have deoxygenated blood which goes through your veins aiming towards your heart.
Blood in oxygen from the systemic circulation enters the right atrium from the superior and inferior vena cava and passes to the ventricle. From here it is pumped into the pulmonary circulation, through the lungs where it receives oxygen and gives off carbon dioxide. Oxygenated blood then returns to the atrium, passes through the left ventricle and is pumped out through the aorta to the systemic circulation_ where the oxygen is used and diabolized to carbon dioxide. Describe the condition Hypertension: This is blood pressure that consistently remains above the normal level of 120/80. Causes: kidney disease, smoking, alcohol and diet.
This concept is taken from Block 4, Module 7 which is entitled as ‘Assessment of cardiovascular system’. The cardiovascular system can also be referred to as the circulatory system. It comprises of the heart and the blood vessels. The major function of the cardiovascular system is to transport nutrients and oxygen to all parts of the body and to remove waste products from the body like carbondioxide. The heart pumps the blood while the blood vessels deliver blood to all body parts.
The independent variable is the various physical activity intensities (50 W, 100 W, and 200 W at 50 RPM). The dependant variable is the heart rate of the participant in beats per minute (BPM). The hypothesis is that with the increase of the resistance there will be an increase in heart rate and with the recovery heart rate will decrease. This is based on previous studies that have shown an increase in heart rate through exercise and a knowledge of the physiological functions of the
A spirometer generates a spirogram which is used to measure a person’s total lung capacity (the maximum amount of air the lungs can hold), tidal volume (the amount of air moving into or out of the lungs during one breathing cycle), and functional residual capacity (the volume of air left in the lungs after passive respiration) (Michailopoulos, et al., 2015). A spirometer can also measure additional air that is inhaled and exhaled from a person’s normal respiration called inspiratory reserve volume and expiratory reserve volume (Michailopoulos, et al., 2015).
Describe the function of the heart, cardiac cycle and circulatory system Function of the heart The heart is a muscular organ that pumps and circulates blood throughout the body via a transport system of arteries and veins and capillaries. As the blood circulates throughout the body it supplies oxygen and nutrients to the tissues as well as removing carbon dioxide and harmful waste products (Tucker, 2015). The structure of arteries Arteries have thick muscular walls and a small lumen passage. According to L. Tucker they are constructed with three layers: • A fibrous outer layer • A middle layer of muscle and elastic tissue • A lining made of squamous epithelial tissue The epithelial lining has a smooth surface to reduce friction and
Underlying theory: • Circulatory system theory: It is the body’s main transport system, the system is made up of the heart, the blood and the blood vessels. The blood transports oxygen, carbon dioxide, hormones and nutrients, . The circulatory system is a closed system which means that blood flows around the body enclosed in blood vessels and does not leave the blood vessels. The heart: The heart consists of many layers: 1. The pericardium- It has two layers.
It means you are doing it well and this will improve flexibility and build the muscles around that area. Directions • Stand up straight with your feet flat on the ground. • Extend your arms to the side 90-degrees to your body. • Start by moving your arms forward in a small, fast
How Skeletal and Muscular Systems Connect Together to Create Body Movement Skeletal muscles are attached to bones by tendons, which use the bones as levers to move the body and its parts. Skeletal muscle needs to pass over a joint to create movement. Muscle contraction pulls one bone towards another and thus moves the limb. Muscles never work alone, any movement results from the actions of several muscles. Muscles mostly work in pairs.