* not completed

. Integrity of the skin is vital for normal fluid balance

True correct incorrect

False correct incorrect

* not completed

. The skin is made up of three principal layers

True correct incorrect

False correct incorrect

* not completed

. The epidermis consists of five distinct layers of cells

True correct incorrect

False correct incorrect

* not completed

. The majority of cells of the epidermis are keratinocytes.

True correct incorrect

False correct incorrect

* not completed

. The synthesis of melanin by melanocytes is controlled by a hormone.

True correct incorrect

False correct incorrect

* not completed

. Three distinct types of glands are found within the skin.

True correct incorrect

False correct incorrect

* not completed

. The most important regulator of blood flow to the skin is body temperature.

True correct incorrect

False correct incorrect

* not completed

. Regarding the regulation of body temperature:

In a temperate climate under normal conditions, the greatest loss of body heat occurs through radiation. correct incorrect

During water immersion, heat is mainly lost via radiation correct incorrect

The thalamus is the centre for integrating thermal information and regulating body temperature. correct incorrect

As the skin possesses thermoreceptors, its temperature is regulated more closely than the core temperature. correct incorrect

* not completed

. Regarding sweating and heat loss:

Heat loss through sweating is controlled by the parasympathetic nervous system. correct incorrect

The efficacy of sweating as a mechanism of heat loss is increased in a tropical rain forest. correct incorrect

Profuse sweating can lead to heat exhaustion. correct incorrect

Sweat is secreted by the apocrine glands correct incorrect

* not completed

. Vasoconstriction of arterio-venous anastomoses in the skin diverts blood to the superficial vessels and promotes heat loss from the body.

True correct incorrect

False correct incorrect

* not completed

. Which of the following apply to a woman who moves from a temperate to a tropical area to live?

During the first few weeks in the tropical area her sweat rate will rise. correct incorrect

The salt content of her sweat will fall. correct incorrect

Her rate of urine production will fall. correct incorrect

The rate at which aldosterone is secreted from her adrenal cortex will fall. correct incorrect

* not completed

. Which of the following statements apply to a 4-year old girl who has a temperature of 39.5°C when measured in the ear canal? Please select all that apply.

Her metabolic rate will be increased by around 20% correct incorrect

She will shiver as her temperature rises correct incorrect

She will say that she feels hot correct incorrect

She will sweat as her temperature rises correct incorrect