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Unit 2 - Anatomy and Physiology - Assignment 2

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by Mason Clarke on 19 June 2013

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Transcript of Unit 2 - Anatomy and Physiology - Assignment 2

Investigation on the initial responses of the body when we exercise
Mason, M Clarke
Connor Riddy
Usain Bolt vs Mo Farah
Aerobic v Anaerobic
Exercise
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
Cardiovascular responses
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
Respiratory response
Change in the Intercostal muscle

The Valsalva manoeuvre can occur (in anaerobic exercise)
Respiratory response
The process of afferent and efferent signals increase
Neuromuscular response
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
Energy Systems
ATP Production

ATP-PC System + Lactate System

Aerobic Glycolysis
References
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]
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