Asked by Jenny Owens on Jul 21, 2024

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A mother of a 1-month-old infant asks the nurse why it takes so long for infants to learn to roll over. What is the reason for this?

A) A demyelinating process must be occurring with her infant.
B) Myelin is needed to conduct the impulses, and the neurons of a newborn are not yet myelinated.
C) The cerebral cortex is not fully developed; therefore, control over motor function gradually occurs.
D) The spinal cord is controlling the movement because the cerebellum is not yet fully developed.

Myelin

A fatty substance that encases and insulates nerve fibers, speeding up electrical impulses between neurons and crucial for proper nervous system functions.

Demyelinating Process

A pathological condition in which the myelin sheath of nerve fibers is damaged, disrupting neural conductivity.

Neurons

Nerve cells that are the basic building blocks of the nervous system, responsible for receiving, processing, and transmitting information through electrical and chemical signals.

  • Describe the implications of neurological findings in various age groups.
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IW
Isabel WatersJul 25, 2024
Final Answer :
B
Explanation :
The infant's sensory and motor development proceeds along with the gradual acquisition of myelin, which is needed to conduct most impulses. Very little cortical control exists, and the neurons are not yet myelinated. The other responses are not correct.