Q. What is the primary function of the kidneys in maintaining homeostasis?
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A.
Regulating blood pressure
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B.
Producing hormones
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C.
Filtering waste from the blood
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D.
Maintaining electrolyte balance
Solution
The kidneys filter waste products from the blood, which is essential for maintaining homeostasis.
Correct Answer:
C
— Filtering waste from the blood
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Q. What is the primary mechanism by which the body maintains blood pH within a narrow range?
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A.
Respiratory regulation
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B.
Renal regulation
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C.
Buffer systems
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D.
All of the above
Solution
The body uses respiratory regulation, renal regulation, and buffer systems to maintain blood pH within a narrow range.
Correct Answer:
D
— All of the above
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Q. What is the primary role of the autonomic nervous system?
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A.
Controlling voluntary movements
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B.
Regulating involuntary bodily functions
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C.
Processing sensory information
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D.
Coordinating muscle contractions
Solution
The autonomic nervous system regulates involuntary bodily functions such as heart rate, digestion, and respiratory rate.
Correct Answer:
B
— Regulating involuntary bodily functions
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Q. What is the role of the liver in metabolic homeostasis?
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A.
Producing bile
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B.
Storing glucose as glycogen
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C.
Detoxifying substances
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D.
All of the above
Solution
The liver is involved in multiple metabolic processes, including bile production, glucose storage, and detoxification.
Correct Answer:
D
— All of the above
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Q. Which of the following is a primary function of the endocrine system?
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A.
Transporting nutrients
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B.
Regulating metabolism
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C.
Providing structural support
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D.
Facilitating movement
Solution
The endocrine system regulates metabolism through the release of hormones that influence various bodily functions.
Correct Answer:
B
— Regulating metabolism
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Q. Which of the following is NOT a function of the integumentary system?
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A.
Protection against pathogens
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B.
Regulation of body temperature
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C.
Production of insulin
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D.
Sensation
Solution
The integumentary system does not produce insulin; that function is performed by the pancreas.
Correct Answer:
C
— Production of insulin
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Q. Which organ system is primarily responsible for gas exchange in the body?
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A.
Circulatory system
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B.
Respiratory system
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C.
Digestive system
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D.
Nervous system
Solution
The respiratory system is responsible for gas exchange, allowing oxygen to enter the blood and carbon dioxide to be expelled.
Correct Answer:
B
— Respiratory system
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Q. Which part of the brain is responsible for regulating body temperature?
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A.
Cerebellum
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B.
Hypothalamus
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C.
Medulla oblongata
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D.
Cerebrum
Solution
The hypothalamus plays a crucial role in thermoregulation by maintaining the body's temperature set point.
Correct Answer:
B
— Hypothalamus
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Q. Which physiological process is primarily responsible for the reabsorption of water in the kidneys?
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A.
Filtration
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B.
Secretion
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C.
Reabsorption
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D.
Excretion
Solution
Reabsorption is the process by which the kidneys reclaim water from the filtrate back into the bloodstream.
Correct Answer:
C
— Reabsorption
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