Human heart

DEMYSTIFIES HOW STRESS INCREASES THE RISK OF HEART DISEASE AND STROKE Topic: Research demystifies how stress increases the risk of heart disease and stroke Purpose: To find out if there is a connection between stress and cardiovascular disease. Hypothesis: The author’s hypothesis is that since previous studies has concluded that there is a link between stress and higher activity in the bone marrow and arteries in animals, the same could apply to humans. The author hypotheses that…

creates an imbalance of acid. To compensate with this imbalance the body speeds up its breathing taking in more oxygen and it also speed up the heart allowing the oxygen to be transported to the muscle faster. The human body cannot keep up with this for long. Eventually the heart and lungs reach their maximum work efforts and it can only neutralize the lactic acid for a short period of time. This buildup of lactic acid is what causes the muscles to feel fatigued and soar the next day. Once the…

skeletal system to perform many key motor functions. It aids in digestion and allows the heart to work. Some muscles are autonomous, or work by themselves, while others are controlled by the nervous system. Four tissues/organs of the muscular system are cardiac muscle, skeletal muscle, smooth muscle and the heart. Cardiac muscle is they type of muscle that makes up the heart and is autonomous. The heart is a muscle that is crucial to survival. Smooth muscle lines the inner digestive tract.…

cardiovascular system is also called the circulatory system, including the heart, blood vessels, blood. It is responsible for the delivery of oxygen and nutrients to the cells, the transport of carbon dioxide and…

the body’s highways. This is because the blood vessels allow blood to quickly travel to all parts of the body and back again quickly. There are three major types of blood vessels in the human body. The first are the arteries which face high blood pressure levels due to the fact that they take blood away from the heart, Because of this they are thicker and more elastic then the other blood vessels. Branching off of the arteries are arterioles which carries blood to the second type of blood…

When the body is at rest, the heart beats at a normal pace. As kinetic energy is applied to the body, it is put into work which can make the heart rate increase a bit. Speed requires kinetic energy in order for it to be done. Depending on how fast the speed being applied to the body, the harder the body will work affecting the cardiovascular and respiratory systems. Elements like force, friction and mass also play a huge role in this experiment. The scientific definition of speed is how fast an…

explored the effects of being nervous and therefore adrenaline on the human cardiopulmonary physiology. Adrenaline or epinephrine is a hormone that is emitted throughout the body in times of temporary stress or fear. Our theory or hypothesis was that in a uncomfortable interaction with a stranger the person in question would experience a spike in their heart rate and blood pressure. In a recent study on the effects of epinephrine on the heart (Fuenmayor and Gomez 2016) the results showed that…

“One third of patients who experience heart attack die within 24 hours of the onset of ischemia, and many of the survivors experience significant morbidity(3)”. Early diagnosis of heart attack reduce the risk of death, especially in those who older the 50 years(1,2). Also, the men between 55-74 years are the most of having diagnosed heart attack or fatal coronary heart disease (CHD)(1). The appearance of cardiac markers in the circulation generally shows myocardial necrosis and is a helpful aide…

the tactile is located on the facial region and act as “whiskers”; they serve as sensory organs due to the touch receptors at the roots. The pelage is found under the chin and the ventral of the snout. The stance of a pig is different to that of a human. Firstly, pigs are unguligrades; they move by walking on the tips of their toes or rather…

organisms, vertebrates and invertebrates, must have necessary nutrients to maintain life. In invertebrates, either a transport system or diffusion provides nutrients to the body. For vertebrates, a closed transport is used to transport blood away from the heart. Both of these scenarios are key to an organism 's health. Some invertebrates do not require a circulatory system. While these organisms do not require a circulatory system, they require certain nutrients to be readily available.…