32 Questions
What is the primary function of sweating in the human body?
To regulate body temperature
What is the composition of sweat?
Primarily water and electrolytes
What is the pH of sweat?
Acidic, with a pH of 4-6
What type of stimuli can trigger sweat glands to secrete sweat?
Heat, emotional, and gustatory stimuli
What is the approximate percentage of proteins in sweat?
1%
How many sweat glands are distributed throughout the human dermis?
Some 4 million
What is the primary function of sweat glands in the body?
To regulate body temperature
Where are apocrine sweat glands primarily found in the body?
In the armpits and peri-anal region
What type of sweat glands are distributed over the entire body, with a few exceptions?
Eccrine sweat glands
What is the role of the hypothalamus in thermoregulatory sweating?
To control the body's internal temperature
What type of neurotransmitter is involved in the stimulation of eccrine sweat glands?
Acetylcholine
What is the main difference between apocrine and eccrine sweat glands in terms of their structure?
Apocrine glands have a shorter ductal portion
During which phase of life do apocrine sweat glands increase in size?
During puberty
What type of sweat glands are thought to arise from eccrine glands during puberty?
Apoeccrine sweat glands
What is the primary source of excessive perspiration in the body?
Eccrine sweat glands
What is the main function of acetylcholine in thermoregulatory sweating?
To stimulate the release of sweat
Which of the following factors is thought to increase thermoregulatory sweating?
Hyper-functioning of the hypothalamus during exercise
What is the characteristic of the secretory portion of apoeccrine sweat glands?
It has a wide section with a cell structure similar to apocrine glands
What is the characteristic of pathological sweating or hyperhidrosis?
It is always diurnal
Which of the following structures is involved in regulating involuntary movement?
Cerebral cortex
In which condition is excessive sweating most likely to occur at distinct anatomical sites?
Focal hyperhidrosis
What is the percentage of apoeccrine sweat glands in the armpit region of some focal hyperhidrosis patients?
45%
What is the maximum capacity of eccrine glands to produce sweat per day?
10 L
What is the rate of sweat production per hour when a person is exposed to heat or exercise?
1.4 L/hour
What causes the increase in sweat production during the initial phase of sweating?
Increase in the number of active sweat glands
What is the function of dark cells in eccrine glands?
Secrete glycoproteins
What triggers the series of electrolyte exchanges in eccrine gland cells?
Acetylcholine
What is the primary solution produced by the eccrine gland?
Isotonic solution
What is the function of apocrine glands in other mammals?
To produce odours that attract the opposite sex
What is the composition of the solution secreted by apocrine glands?
Fatty acids and proteins
What is the role of sodium pumps in the eccrine gland cells?
To push sodium electrolytes out of the cell
What is the result of the reabsorption of sodium chloride from the primary solution?
A hypotonic solution remains
Test your knowledge of the human body's sweat glands and the process of sweating. Learn about the composition of sweat, its functions, and how it helps regulate body temperature. Take this quiz to understand the physiology of sweating and its importance in human health.
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