What is the largest organ in the human body by surface area?
A. Brain
B. Heart
C. Liver
D. Skin
The largest organ in the human body by surface area is the skin. It covers the enre external surface of the body and has an average surface area of about 20 square feet in adults.
Therefore, the Correct Answer is D.
More Questions on TEAS 7 Science
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Q #1: Which of the following is a characteristic of innate immunity?
A. It is highly specific to particular pathogens.
B. It is acquired over time through exposure to pathogens.
C. It provides immediate, non-specific protection.
D. It involves the production of antibodies.
Answer Explanation
Innate immunity is a fundamental aspect of the body's defense mechanism that operates from birth. It offers immediate protection against a wide range of pathogens, such as bacteria, viruses, and fungi, without requiring prior exposure to these invaders.
This defense system is non-specific, meaning it doesn't target a particular pathogen but rather provides a generalized response to various threats. Innate immunity includes physical barriers like the skin and mucous membranes, as well as cellular components such as phagocytes and natural killer cells. These elements work together to detect and neutralize potential threats swiftly, preventing infections from taking hold in the body.
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Q #2: Which of the following is NOT one of the four primary tissue types found in the human body?
A. Epithelial
B. Nervous
C. Connective
D. Exocrine glandular
Answer Explanation
Exocrine glandular is not one of the four primary ssue types found in the human body. The four primary ssue types are epithelial, nervous, connective, and muscle.
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Q #3: Which of the following substances is excreted by the kidneys to regulate blood pressure?
A. renin
B. erythropoien
C. calcitriol
D. urobilinogen
Answer Explanation
The kidneys secrete a number of hormones, which are important for normal functioning of the body.
If blood pressure falls, renin is secreted by the kidneys to constrict the small blood vessels, thereby increasing blood pressure. If the kidneys aren’t functioning correctly, too much renin can be produced, increasing blood pressure and sometimes resulting in hypertension (high blood pressure). This is why a number of people with kidney diseases also have high blood pressure.
