Food Ch 6 & 7 Fuels/Energy Systems/O2 Uptake/Acute Responses

Front

Which of the following is not an acute respiratory response to increased exercise intensity? Increased tidal volume, Increased stroke volume, Increased gaseous exchange at the lungs, Increased intercostal muscle contractions

Back

Increased stroke volume

Front

The most important factor for increasing cardiac output from submaximal to maximal exercise is

Back

Heart rate

Front

During continuous exercise the heart rate increases and the force of contraction is also greater. This results in:

Back

An increase in systolic blood pressure.

Front

During exercise the cardiac output (Q) of an individual can be determined by which of the following parameters? Stroke volume multiplied by respiratory frequency, Tidal volume multiplied by respiratory frequency, Stroke volume multiplied by heart rate, Stroke volume multiplied by arterio-venous oxygen difference

Back

Stroke volume multiplied by heart rate

Front

At the commencement of physical activity, blood flow is redistributed around the body. Which of the following body parts is blood flow reduced to? Heart, Muscles, Internal organs, Skin

Back

Internal organs

Front

Ventilation is: A respiratory response to exercise, Controlled by the respiratory centre in the brain, The product of tidal volume and respiratory rate

Back

All of the above

Front

Steady state occurs when: Oxygen supply to muscles is able to keep up with oxygen demand

Back

Oxygen supply to muscles is able to keep up with oxygen demand

Front

Systolic blood pressure: Is measured as part of the systemic circulation when blood is pumped from the left-hand side of the heart after it has been received from the lungs and is oxygenated. Is always higher than diastolic blood pressure. Rises rapidly during exercise as more blood is pumped through the heart.

Back

All of the above.

Front

During a period of oxygen deficit

Back

Oxygen supply is less than oxygen demand.

Front

What is the fuel source for the Anaerobic Glycolysis System?

Back

Glycogen