| Date | November 2021 | Marks available | 1 | Reference code | 21N.1.HL:.tz0.30 |
| Level | Higher Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 30 | Adapted from | N/A |
Question
Which describes central fatigue?
A. Fatigue that originates from physiological changes in the brain or spinal cord
B. Fatigue that results from a decrease in the total number of cross bridges that can form between the actin and myosin
C. Fatigue that results from decreased glycogen stores in the muscle
D. Fatigue that results from a build-up of phosphate in the muscle
Markscheme
A
Examiners report
A large number of candidates managed this question on central fatigue with ease, and it was a good discriminator.
