KNAT Practice Test Question from KNAT Tutor Lesson: Support & Movement
Please see the question below. Scroll down for the correct answer and video explanation.
KNAT Practice Test Answer Explanation
The correct answer is D. Several contractile units called myofibrils are found within a single muscle fiber. Smaller contractile units called sarcomeres make up a myofibril
For a review on the muscular system, watch the answer explanation video below.
[Source: KNAT Tutor Lesson: Support & Movement]