Week 1, Integument, thermoregulation and homeostasis Flashcards
The ________ glands in the axilla become active at the time of puberty.
apocrine sweat
Which of the following statements is CORRECT?
Answers:
a.
core temperature is maintained within a narrow range between 36.7°C and 37.2°C.
b.
core temperature is affected more by changes in ambient temperature than shell temperature.
c.
core temperature is maintained at a homeostatic level of 37.5°C.
d.
females always have a higher core temperature compared to males.
a.
core temperature is maintained within a narrow range between 36.7°C and 37.2°C.
The ________ in keratinocytes protects the epidermis and dermis from the harmful effects of sunlight.
melanin
Thermoreceptors
Answers:
are found within the dermis.
are free nerve endings.
for “cold” are structurally indistinguishable from those for “warm.”
are more numerous for cold than for warm temperatures.
All of the answers are correct.
All of the answers are correct.
The layer of the skin that provides a barrier against bacteria as well as chemical and mechanical injuries is the
epidermis.
Which of the following is formed in the skin when it is exposed to sunlight?
d.
vitamin D.
Which of the following happens if body temperature rises above normal?
Blood flow to the skin increases.
When you stand barefoot on the bathroom floor tiles in winter and you feel cold, heat is being lost by;
conduction.
The protein that reduces water loss at the skin surface is
keratin.
What part of the brain is involved in thermoregulation?
hypothalamus
In an environment that is cooler than your body, you lose heat in a process called
radiation.
How do nutrients reach the epidermis of the skin?
nutrients move by diffusion from the papillary blood vessels in the dermis into the epidermis
Which of the following individuals would lose heat the fastest in a cold room?
a newborn infant
Merocrine sweat glands
secrete a watery fluid directly onto the surface of the skin.
Nail production occurs at the nail
root.
