OCR GCSE Biology Practice Exam 2026 – Comprehensive All-in-One Guide to Exam Success

Question: 1 / 1090

What is the result of triceps contraction?

Lower arm moves up

Lower arm moves sideways

Lower arm moves down

The result of triceps contraction primarily leads to the lowering of the lower arm, which is the action that occurs when the triceps muscle contracts. The triceps, located at the back of the upper arm, is responsible for extending the elbow joint. When the triceps contract, they pull on the forearm bones, specifically the ulna, which causes the lower arm to move downward.

In contrast, the other options do not accurately describe the action that occurs when the triceps contract. The lower arm does not move upward or sideways since those movements would require the action of other muscles, such as the biceps for upward movement or certain shoulder muscles for sideward movement. Similarly, the arm does not remain still because the contraction of the triceps is an active process that results in movement. Hence, the most precise outcome of triceps contraction is indeed the lower arm moving down.

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Lower arm remains still

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