Cardiac muscle

Its purpose is to receive oxygenated blood from the lungs and pumps the oxygenated blood to the rest of the body (organs and skeletal muscles). During exercise there is an increase in the supply of oxygen to the working muscles, this happens so that there is an increased generation of adenosine triphosphate (ATP) to support the continued contraction of the muscles. During this time CO2 is expelled though the heart pumping deoxygenated blood to the lungs. What exercise does to the heart. There…

because you can be good and also healthy as you get older. Young people would see older people with big muscle or in shape, so in there mind they want to be like that person when they get older. Even older people want to get theirselve in the right shape and form the older they get in life. But most people don’t know nothing about most the disease that are out there that involve with the liver, muscle, heart, fat and also brain cell. One of those disease is Myokine, the myokine helps repair the…

frequency and intensity all are relevant in triggering physiological responses in our bodies. For example, skeletal muscles demand an increase in oxygen and substrates and simultaneously remove carbon dioxide and metabolites (Burton et al., 2004). Furthermore, studies have conducted that demonstrate the peril of living an inactive and sedentary lifestyle. Thus, exercise can strengthen cardiac and respiratory variables by having them become more efficient (Salmon et al., 2003). As one…

Reduced heart rate leads to decreased cardiac output so the cardiovascular centre slows the rate of sympathetic impulses which causes vasoconstriction due to decreased sympathetic resistance which causes a decrease of arterial blood pressure. Baroreceptors are quick to counteract the drop in…

we have only one type of muscle in our bodies that help us with all different types of tasks, however; not only do our bodies have different muscle types, they also contain different muscle fibers that are used for different activities. Skeletal muscle contain three types of muscle fibers: slow twitch, fast twitch oxidative, and fast twitch glycolytic. Most muscles in our bodies have different combinations of these muscle fibers, although our body recruits different muscle fibers for different…

neck muscles are the sternocleidomastoid and the trapezius, and are responsible for the gross motor movement in the muscular system of the head, neck and shoulders. The sternocleidomastoid muscle is a paired muscle, located at the front and on each side of the neck. It is one of the largest and most superficial cervical muscles. The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck. The trapezius is one of the biggest shoulder and neck muscles…

“A muscle is a tissue composed of cells or fibres, the contraction of which produces movement in the body.” (Dictionary) There are three different types of muscle; voluntary skeletal muscle, involuntary smooth muscle and cardiac muscle. Muscles have many different functions within the body. One function of muscle is movement. It is the only tissue in the body which is able to contract and therefore can move more than other body parts. Another function is the maintenance of posture. The muscles…

Of the three types of muscle cells, skeletal muscle cells are the most recognizable as muscles because skeletal muscles are the type used in voluntary movement. Skeletal muscles cells are some of the most distinct differentiated cells in the human body, this distinction is likely because of the clear and specific purpose in the body of being the source of contractions that allow voluntary movement. I chose skeletal muscle cells because it’s fascinating to me how movement of the body is such a…

1. The resting membrane potential is the potential difference across the cell membrane of excitable cells such as nerve and muscle cells. The 3 major factors that establish a resting membrane potential are as follows: (1) Non-diffusible anions: The resting membrane potential is influenced by the presence of large non-diffusible anions (proteins, nucleic acids and organic phosphates) inside a cell. The presence of large non-diffusible anions inside a cell attracts a large number of cations and…

Cardiovascular Response: When exercising the muscles requires a constant supply of oxygen, it is the hearts job to make sure there is enough oxygen being pumped round the body for the muscles, the heart has to pump harder and faster as more oxygen is required to get round the body to the muscles in use otherwise they will fatigue quicker. If this is repeated regularly, then over time the heart will become stronger as will become more used to the higher demands. At the start of exercise, the…