A metacarpal artery is any of the arteries supplying blood to the metacarpal region of the hand, typically referring to the continuation of the deep palmar arch that travels down each finger.

APR stands for Annual Percentage Rate. It is the yearly cost of borrowing money and reflects the annual cost of credit expressed as a percentage. APR includes not just the interest rate but also other charges and fees involved, giving borrowers a comprehensive measure to compare loans. It is used across various forms of credit, such as loans, credit cards, and mortgages.

Look backward is a phrase referring to the action of reviewing, recalling, or considering past events, experiences, or data. This could be for the purpose of analysis, drawing lessons, comparisons, reflections or understanding trends. It can also refer to a nostalgic or retrospective viewpoint.

Bedrid is an adjective referring to someone confined to bed due to illness or old age.