Muscular system

the actions of the heart such as pumping the blood. However, it is specialized by the control of the autonomic nervous system. Cardiac muscles are very resistant to fatigue because of the vast amounts of myoglobin, mitochondria, and blood supply permitting consistent aerobic metabolism (NIH, 2016). Distinguish fast, slow, and intermediate fibers. Provide an example of muscular activities for…

Duchenne Muscular Dystrophy (DMD) is a rare single gene disorder affecting 1 in 3,500 boys. The muscles of the affected person weaken and waste away (atrophy), usually beginning in the lower limbs and then spreading to the upper body as the disease progresses (1). This disorder is caused by recessive mutations in a gene called dystrophin. The dystrophin gene is located on the X chromosome (Xp21.2). Because the X-linked disorder is recessive it occurs mostly in males because males who inherit the…

For young women who begin strength training and are not instructed properly have major downfalls. The first is the adverse effect it has on the skeletal system and estrogen production (Falk, 2015). When adolescents begin the strength training process patience is not always their strength. They want to lift more and more weight. They want the gains and the muscle mass to pack on. However, by lifting large…

The results from the first experiment confirmed the hypothesis, to a certain extent, in that increasing stimulus strength will increase the force generated by the gastrocnemius muscle and visa versa till 0.2V, where the force germinated starts to decrease. As shown in Table 2 and Figure 2, the strength of the stimulus started from 0.00 V to 1.00V with 0.05 V and 0.10V intervals. At 0.10V the force generated by the muscle increases rapidly from 0mN to 288.33mN. The force generated by the muscle…

As far as an athletes perspective on supplementation it seems like a fast and efficient way to get bigger, stronger, and faster effectively. These supplements vary from simple over the counter products such as protein, amino acids, creatine, and even advanced supplements such as anabolic steroids. Some of these are incredible safe and effective while others may do more harm than good. I will be exploring the positive and negative benefits of creatine when taken as a supplement for an athlete (a…

garments, from companies such as Nike and Adidas, as well as being seen on professional athletes. Muscular endurance can be defined as the muscle’s ability to maintain a contraction or to continue repetitive contraction over a long period of time. Increased muscular endurance is thus associated with increased athletic performance. With medium length distance runners, one could see how increased muscular endurance could benefit their performance in a competitive setting…

Cosmetic Use of Botulinum Toxin Type A Introduction Botulinum toxin was first identified as a cause of food poisoning over 100 years ago (Carruthers and Carruthers, 2009). Since then, there has been an identification of seven different serotypes labeled A-G; all produced by different strains of the bacteria Clostridium botulinum (Hurkadle et al., 2012). Botulinum toxin type A (BTX-A) is the main and most well-studied serotype that is used in cosmetic (Hurkadle et al., 2012). The BTX-A can be…

Muscular injuries are one of the leading injuries faced by amateur and elite athletes today (Dadebo, White, & George, 2004; Mayo, Seijas, & Alvarez, 2014; Woods, Bishop, & Jones, 2007). Before athletes even step on to the field, the court, the stage, or in front of the crowd, they have already been in the game mind set for the last hour going through their pregame routine. Pregame routines vary greatly, but almost all contain some combination of sport appropriate warm-ups and stretches. Warming…

A single frog leg that was severed from the body at the hip joint was dissected to isolate and expose the gastrocnemius muscle. The gastrocnemius muscle was first separated from the tibiofibula bone, but left attached to the knee and the Achilles tendon. A 15 cm long piece of strong thread was tied tightly around the Achilles tendon of the heel of the frog for later attachment of the muscle to the force transducer equipment. The Achilles tendon below the tied string was then severed and the…

If you are having trouble gaining muscle, well no worries with the help of Marina Krakovsky’s article, “The Secrets of Self-Improvement”, and comparing it to other writers with their own articles. For some gaining muscle doesn’t come easy. There are different methods to gain muscle. Though Krakovsky can enlighten great methods to oneself looking to gain mass and muscle. In the article, “The Secrets of Self-Improvement,” Marina Krakovsky gives a variety of methods to improve and maintain…