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Movement of a body part toward the midline of the body is known as

A.

flexion

B.

extension

C.

abduction

D.

adduction

Answer and Explanation

The Correct Answer is D

Rationale:
A. Flexion refers to decreasing the angle between two body parts, such as bending the elbow or knee.
B. Extension is the opposite of flexion, involving an increase in the angle between body parts, such as straightening the arm or leg.
C. Abduction is the movement of a body part away from the midline of the body, like lifting the arm or leg sideways.
D. Adduction involves moving a body part toward the midline of the body, such as bringing the arms back down to the sides or crossing the legs together. This movement is essential for coordinated limb positioning and maintaining balance.


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Related Questions

Correct Answer is D

Explanation

Rationale:
A. 750 mL is higher than the normal daily loss through insensible perspiration and would typically only occur with conditions like fever or very hot environments.
B. 250 mL is too low; the body normally loses more than this each day through skin and respiratory evaporation.
C. 650 mL is close but still above the usual average range for a healthy adult at rest.
D. 500 mL is the approximate average fluid lost daily through insensible perspiration (skin and lungs), making this the correct answer.

Correct Answer is C

Explanation

Rationale:
A. Melanin production protects against ultraviolet (UV) radiation but does not directly prevent bacterial entry.
B. Sensory perception allows detection of touch, pressure, pain, and temperature, but it does not serve as a barrier against pathogens.
C. The skin acts as a physical and chemical barrier, preventing bacteria, viruses, and other pathogens from entering the body. Its intact epidermis, along with secretions such as sweat and sebum, helps maintain this protective function.
D. Filtration is a function associated with organs like the kidneys, not the skin.

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