State the function of the immune system.

Using an example, outline the function of platelets in sport.

Identify glands X, Y and Z in the diagram.

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X:

Y:

Z:

Explain adrenaline regulation immediately prior to a sprint race.

Outline the function of adrenaline during fasting.

protects the body from infectious disease ✔

involved in tissue repair and protection against potential pathogens ✔

eg when a rugby player is cut by studs from a players boots during a ruck ✔ Accept any suitable sporting example.

platelets clot the blood to prevent blood loss ✔

X: thyroid ✔

Y: adrenal ✔

Z: pancreas ✔

brain triggers adrenal glands in response to stress <of the race>✔

adrenaline released into bloodstream ✔

circulates to target cells ✔

appropriate physiological response: heart rate increase / blood pressure increase / increased sweating / bronchiole dilation/promotes glycogenolysis ✔

Accept suitable diagram.

fasting can cause hypoglycemia ✔

adrenaline is released to increase <liver> glycogenolysis✔

if fasting persists it can stimulate gluconeogenesis in the liver and kidneys ✔