Flashcards in Semester 1 exam revision Deck (27):
Define pulmonary ventilation
The process of gas exchange between lungs and the blood
The volume of air breathed in and out per minute (tidal volume x breathing frequency)
Define tidal volume
Amount of air breathed in or out per breath
Define vital capacity
Volume of air forcibly expired after maximum inspiration of one breath
Define ventilation breakpoint
The point during intense exercise at which ventilation increases disproportionally to the oxygen consumption
What is Dalton's law of gases?
The partial pressure of nitrogen, oxygen and carbon dioxide add up to atmospheric pressure
What is Henry's law of gases?
Gases dissolve in liquids in proportion to their partial pressures, depending on there solubility in the specific fluids and depending on temperature
When are the internal intercostals used?
Expiration during exercise
What causes the Bohr effect?
Lower pH during exercise
Blood pressure equation
Cardiac output x total peripheral resistance
Define cardiac output
Total volume of blood pumped by the ventricle per min
HR x SV
Define steady state heart rate
Heart rate plateau reached during constant rate of sub maximal work
What is the PCr system equation
PCr + ADP + H ----> ATP + Cr
Define anaerobic power
The peak rate at which ATP can be replenished anaerobically
Define anaerobic capacity
The total amount of ATP that can be replenished anaerobically
What are the three main ways of assessing biological maturation?
Skeletal, sexual, somatic
What is the equation for V02
Q x a-v02 diff
SV x HR x arterial o2- venous 02
Order of carbohydrate size smallest to largest
The consequence of eating a pre exercise snack which is high in simple carbs
The ability to produce force
Name the 4 primary ways which the neurones adapt from resistance training
Motor unit synchronisation, increased rate coding of motor units, increased neural drive, autogenic inhibition
Factors which effect the velocity of an action potential
Large diameter neurons conduct nerve impulses faster
They present less resistance to current flow
Saltatory conduction: potential travels quickly from one break in myelin to the next
What is excitation contraction coupling?
The process of converting the electrical signal from a motor neuron into a muscle contraction