The primary mechanism for heat loss during exercise in a warm (~30C) environment is:

Question 1

The primary mechanism for heat loss during exercise in a warm (~30C) environment is:

radiation

convection

evaporation of sweat

Question 2

The major determinant of the sweating rate during exercise is:

exercise intensity

ambient humidity

ambient temperature

Question 3

The composition of sweat means that in comparison with the normal osmolarity of body fluids it is:

isotonic

hypertonic

hypotonic

Question 4

During prolonged, strenuous exercise without fluid replacement the increase in heart rate is associated with:

increased vagal activity is increased

reduced plasma adrenaline

reduced stroke volume

Question 5

A key neuromuscular response to hyperthermia is:

reduced action potential conduction velocity

reduced central motor drive

increased sarcolemmal excitability

Question 6

Muscle glycogenolysis is higher during exercise in the heat partly because:

plasma adrenaline levels are increased

muscle temperature is lower

skeletal muscle blood flow is reduced

Question 7

The key adaptation to heat acclimatisation is:

expanded blood volume

reduced sweat sensitivity

cardiac hypertrophy

Question 8

The hormone promoting renal sodium absorption in the post-exercise period is:

adrenaline

aldosterone

cortisol

Дата добавления: 2015-11-04