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Unit 2 - Anatomy and Physiology - Assignment 2
Transcript of Unit 2 - Anatomy and Physiology - Assignment 2
Mason, M Clarke
Usain Bolt vs Mo Farah
Aerobic v Anaerobic
The main thing that happens to our cardiovascular system when we exercise is that our heart rate increases.
The two ways that our heart rate can increase, through anticipatory increase as well as activity response
Stroke volume is the amount of blood that is pumped out of the hearts left ventricle during one contraction.
Stroke volume and heart rate combined is what makes up the ‘cardiac output’.
Cardiac output is the volume of blood that our heart pumps out every minute.
Cardiovascular response (continued)
The breathing rate of the individual increases
Pulmonary ventilation is increased (VE )
There is an increase in tidal volume
Change in the Intercostal muscle
The Valsalva manoeuvre can occur (in anaerobic exercise)
The process of afferent and efferent signals increase
Afferent and Efferent impulses are
Muscle spindles are when an bodiliy organ is placed within a muscle that communicates with the CNS
Neuromuscular junctions are place where the nerve and muscles meet
Motor Units are is a group of muscle fibers that are stimulated by a single nerve
GTO - Golgi Tendon Organ
ATP-PC System + Lactate System
Gledhill, A, Mulligan, C, Saffery, G, Sutton, L & Taylor, R. (2007). Sport and Exercise science. Oxford: Heinemann
Stafford brown and Rea- 2010- page 35 and 36
Waehner, P, (2009) Motor Unit [Online] Available at http://exercise.about.com/od/healthinjuries/g/motorunit.htm - Motor Unit definition [Accessed13th February 2013)
Dixon, A, (2010) Cardiovascular system response to exercise [Online] Available at http://www.livestrong.com/article/204925-cardiovascular-system-response-to-exercise/ [Accessed February 13th 2013)
Whittemore, F, (2009) What are Muscle Spindles [Online] Available at http://www.livestrong.com/article/38316-muscle-spindles/ [Accessed February 13th 2013]