Neurotransmitters

question 235

Multiple Choice

Neurotransmitters:

• A) are chemical messengers that are secreted into the bloodstream primarily by endocrine glands.
• B) are present in extremely small quantities in the brain.
• C) are constantly changing their basic molecular shape as the human brain adapts to new experiences.
• D) compete with sodium and potassium ions for the receptor sites on the surrounding neurons.

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Definitions:

Stop-buy Orders

An order to purchase a security when its price reaches a specific level, used to limit loss or enter a market as prices rise.

Short Sales

The selling of a security that is not owned by the seller, with the intention of buying it back later at a lower price.

Maintenance Margin

The minimum amount of equity that must be maintained in a margin account after a purchase has been made, to ensure account stability against market fluctuations.

Margin Loan

A loan from a brokerage firm that allows investors to borrow money to buy securities, using the securities as collateral.