Anatomical feature of an infant's skull, the soft spot where membranes cover the space between bones.

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Study for the Ivy Tech APHY 101 - Skeletal System Test. Enhance your learning with flashcards and multiple choice questions, each question includes hints and explanations. Prepare for success!

Multiple Choice

Anatomical feature of an infant's skull, the soft spot where membranes cover the space between bones.

Explanation:
The main idea here is recognizing the soft spot on an infant’s skull where the bones haven’t yet fused. That feature is called a fontanel. Fontanels are gaps between the skull bones filled by fibrous membranes, which allow the skull to be flexible for birth and to accommodate rapid brain growth in infancy. Over the first couple of years, these membranes are gradually replaced by bone, and the fontanels close—usually by about 18–24 months. Other terms describe different skull features: a notch is a small indentation at a bone edge, a meatus is a canal-like passage, and a sinus is a hollow air-filled cavity within a bone.

The main idea here is recognizing the soft spot on an infant’s skull where the bones haven’t yet fused. That feature is called a fontanel. Fontanels are gaps between the skull bones filled by fibrous membranes, which allow the skull to be flexible for birth and to accommodate rapid brain growth in infancy. Over the first couple of years, these membranes are gradually replaced by bone, and the fontanels close—usually by about 18–24 months. Other terms describe different skull features: a notch is a small indentation at a bone edge, a meatus is a canal-like passage, and a sinus is a hollow air-filled cavity within a bone.

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