24 Questions
What is the primary factor that may increase Basal Metabolic Rate (BMR)?
Environmental temperatures
Which activity contributes to Basal Metabolism?
Maintaining body temperature
What happens when daily energy intake is less than total daily energy expenditure?
Weight increases
Which factor is NOT associated with an increase in Basal Metabolic Rate?
Diffusion
What is the primary determinant of weight stability in relation to energy balance?
Total daily energy expenditure equaling daily energy intake
What effect does an increase in metabolic rate have on respiratory rate?
It increases the respiratory rate to supply more oxygen to the cells.
What is the primary site of heat loss in the body?
Skin
How does a decrease in basal metabolic rate affect the respiratory rate?
It decreases the respiratory rate due to reduced oxygen demand.
Which process involves the diffusion or dissemination of heat by electromagnetic waves?
Radiation
What effect does vasoconstriction have on perfusion?
It decreases perfusion by constricting blood vessels and reducing blood flow.
What is the transfer of heat to another object during direct contact known as?
Conduction
What environmental or pathophysiologic alteration could result in an increase in respiratory rate?
Acid-base imbalance
What is the term for the process of liquid turning into vapor as a means of heat loss?
Evaporation
How does an increase in respiratory rate affect the exchange of gases in the lungs?
It decreases the exchange of gases due to reduced time for diffusion.
In response to core body temperature and environmental temperature, what controls the opening and closing of arterio-venous shunts located below the skin surface?
Sympathetic nervous system
What is the primary source of heat production?
Shivering
Which hormone is a primary source of heat produced by various mechanisms?
Epinephrine / norepinephrine
What is the function of contraction of pilomotor muscles?
Decreasing surface area of skin available for heat loss
What is the role of vasodilation in body temperature regulation?
Increasing heat loss
What term describes the process of decreasing the radius of arterioles?
Vasoconstriction
What is the term for the volume of blood ejected by the left ventricle in one contraction?
Cardiac output
In the context of blood pressure, what does systolic pressure represent?
Force of moving blood against the arterial walls when the ventricles contract
What is the term used to describe difficulty breathing with shallow, rapid respirations?
Dyspnea
What is the term for the long-term regulation of blood pressure by regulating extracellular volume through the kidneys?
Renin-angiotensin-aldosterone system
Test your knowledge on the physiology of respirations, including the rate and depth of inhalation and exhalation, environmental and pathophysiologic alterations, and factors affecting respiration. This quiz covers topics such as exercise, respiratory and cardiovascular diseases, fluid and electrolyte imbalances, acid-base imbalance, medications, trauma, pain, and emotions.
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