The sarcomere is the contractile unit of skeletal muscle fibres. The diagram shows a relaxed sarcomere. Which of the following would shorten when the sarcomere contracts? (1)
A.
region P only
B.
region R only
C.
regions P and R
D.
regions Q and R
Exam No：wbi15-01-que-20240608 Year：2024 Question No：4(a)(i)
Answer:
C
Knowledge points:
CH7 – Respiration, Muscles and the Internal Environment
Solution:
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