Biology with citation Essay Example | Topics and Well Written Essays - 500 words

Biology with citation - Essay Example However, when oxygen is present in a very less quantity inside the muscle cells, they temporarily convert pyruvate into a substance called lactate, which allows glucose breakdown for energy. This is also called as anaerobic energy production and as a result lactic acid is accumulated inside the muscle cells. Well, I was gasping because, I needed more oxygen to supply to my body cells for aerobic respiration and my legs were shaking because of a freight hormone, adrenaline – it is released when one feels some kind of fear, for example, examination fear in this case. In addition, the lactic acid accumulation increases the acidity of the muscle cells and disrupts other metabolites, and the muscle strains occur. 2.Deltoid is a three-headed muscle that caps the shoulder. The three heads are anterior, lateral and posterior heads. The anterior head is attached to the humerus, the lateral originates on the collarbone and the posterior head originates on the scapula. The deltoid muscle is a mover and a stabilizer, as it lifts the arm up and it also helps press the end of the upper arm bone into the shoulder socket. Since it has got three heads, the muscle can easily extend and flex the arm. 3. Tetrodotoxin (TTX) is a poisonous chemical found mostly within the liver, ovaries, intestines and skin. This chemical is found in Fugu – a puffer fish. The fish is really tasty but it may contain poisonous parts if sold by unlicensed vendors and unskilled preparation of puffer fish. TTX chemical is heat stable and its poisonous nature is not neutralized even after cooking fish. TTX binds to and blocks Sodium channels found on tissues such as nerves and muscles. The blockage of sodium entry through these ion channels makes these tissues non-functional. If a person consumes such toxins, the severity of the symptoms depends on the amount of TTX consumed. Since there is no antitoxin available against TTX, the treatment is largely supportive by