Ciências Anos 10–12

Tug of War

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Which of the following is NOT a primary function of the integumentary system?

A Protection against mechanical injury and pathogens

B Production of red blood cells

C Regulation of body temperature through sweating and vasodilation

D Synthesis of vitamin D when exposed to sunlight

A patient has a condition that reduces the number of melanocytes in the epidermis. What is the most likely consequence?

A Decreased ability to produce vitamin D

B Increased sensitivity to UV radiation and reduced skin pigmentation

C Excessive sweating and poor temperature regulation

D Increased susceptibility to skin infections

Which layer of the skin contains blood vessels, nerve endings, and glands?

A Hypodermis

B Dermis

C Stratum corneum

D Epidermis

During a severe burn, a patient loses a significant portion of their skin. Which of the following would be the most immediate concern?

A Loss of vitamin D synthesis leading to bone weakness

B Excessive hair growth in the affected area

C Inability to produce melanin leading to albinism

D Dehydration and infection due to loss of barrier function

Which of the following best explains why the integumentary system is considered a key component of the immune system?

A It regulates body temperature, creating an environment hostile to pathogens.

B It produces antibodies that neutralize pathogens.

C It contains Langerhans cells that phagocytose pathogens and present antigens.

D It synthesizes vitamin D, which directly kills bacteria.

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