In Sensorimotor Substage 4, Infants

question 53

Multiple Choice

In sensorimotor substage 4, infants:

• A) think, using mental symbols.
• B) practice and extend their inborn reflexes.
• C) perform only secondary circular reactions.
• D) coordinate secondary circular reactions to achieve goals.

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Definitions:

Calcium

A mineral essential for life, important in bone health, muscle function, and nervous system signalling.

Dura mater

The tough outermost layer of the three membranes covering the brain and spinal cord, providing protection and support.

Meninges

The three membranes (the dura mater, arachnoid, and pia mater) that envelop the brain and spinal cord, providing protection.

Epidural space

The area between the dura mater and the vertebral wall, containing fat and small blood vessels, often involved in epidural anesthesia.