Ten-Month-Old Russell's Propensity to Tug at the Velcro Straps on His

question 241

Multiple Choice

Ten-month-old Russell's propensity to tug at the Velcro straps on his hat, remove his hat, and get the other children at the day care centre to repeat the same actions themselves is an example of a(n)

• A)behaviour problem.
• B)immaturity level in his development.
• C)expert baby who is able to teach skills and information to other infants.
• D)problem with how he is dressed for daycare.

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Definitions:

Axoaxonic Synapse

A type of synapse in which an axon terminal of one neuron connects to another neuron's axon, potentially modulating neurotransmitter release.

Connexin Proteins

A family of proteins that form gap junctions, allowing direct communication between cells through the exchange of ions and small molecules.

Hemichannel

A type of membrane channel that allows the exchange of ions and small molecules between the intracellular space and the extracellular environment.

Gap Junction

Area of contact between adjacent cells in which connexin proteins in each cell form connecting hemichannels, which, when open, allow ions to pass between the two cells; also called an electrical synapse.