IB SEHS Option A2

Front

Which of the following is NOT describing the relationship between cellular metabolism and heat production by the body: Humans require energy to produce heat in order to maintain the internal body temp at around 37C, When metabolism decreases, more heat is produced, Typically 60% to 70% of the total energy expended by the human body is degraded to heat, During biochemical reactions heat energy becomes available

Back

When metabolism decreases, more heat is produced

Front

The normal physiological range for core body temperature is

Back

37 degrees Celsius

Front

Which of the following describes convection?
Options:
Transfer heat through direct contact,
Transfer of heat through electromagnetic waves,
Heat loss through the conversion of water to vapour,
Moving heat by the motion of a gas, liquid, air passing over the skin

Back

Moving heat by the motion of a gas, liquid, air passing over the skin

Front

Which of the following is NOT a consideration in the formation of sweat and the sweat response? A clear watery liquid is produced in the sweat glands, The amount of sweat the body can produce is dependent on the amount of sweat the gland can produce on the surface of the skin in most individuals, Heavier individuals tend to have a higher sweat (at the same relative exercise intensity)

Back

Sweat is produced in the hair follicle in the dermis of the skin

Front

Are these physiological responses that occur during prolonged exercise in the heat? Increased sweating, decrease in blood volume, heart rate increases, blood flow increases and reduced in stroke volume

Back

True

Front

A.2.7 Which of the following describes heat cramp? Options: Muscle spasms, Vomitting, Sweating may or may not be present

Back

Muscle spasms

Front

Which of the following describes Heat Exhaustion? Options: Associated with core body temp of 40C or higher, Associated with core body temp equal to or greater than 39 C, Associated with core body temp less than 39 C

Back

Associated with core body temp equal to or greater than 39 C

Front

A.2.7 Which of the following is a symptom of Heat Stroke: Involuntary jerking of muscles, Fainting, coma or convulsions?

Back

coma or convulsions

Front

Which of the following is NOT a method to prevent heat related disorders? Rest, Appropriate consumption of electrolytes, Reduce intensity

Back

train in the heat of the day

Front

Which of the following is NOT a way to acclimatise to heat stress?
- Progressively increase duration
- Train in the environment
- Train for approx 100 mins for best results

Back

Full adaptation takes 15 to 18 days for most individuals