An Individual with a "Double-Jointed" Thumb Can Pull It Back

question 18

Multiple Choice

An individual with a "double-jointed" thumb can pull it back towards the wrist much farther than normal. What does it mean to be "double-jointed?"

• A) The additional joint present doubles the range of motion.
• B) The joint capsules and ligaments are more stretchy and loose than normal.
• C) Articular cartilage at bone ends is replaced with hyaline cartilage.
• D) Greater than normal production of serous fluid lubricates the joint and extends it.

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Definitions:

Critical Periods

Specific times in an organism's development when it is particularly sensitive to certain environmental stimuli, which shape future behaviors and abilities.

Physical Contact

The act of touching or being in close proximity to another person or object, which can have psychological and emotional effects.

Mother-Infant Attachment

The emotional bond that forms between a newborn and their primary caregiver, pivotal for the child’s social and emotional development.

Breast-Feed

The act of feeding a baby with milk directly from the mother's breasts, providing essential nutrients and antibodies.