Free HESI-A2 Web TestEngine Demo

Q41 Single choice

In order for the actin filaments to bind to the myosin head, what must occur first?

A
The sarcomere has to shorten.
B
Calcium ions must bind to troponin molecules.
C
Tropomyosin has to attach to the actin binding sites.
D
Magnesium ions must be released by the sarcoplasmic reticulum.
E
The Z line has to be lengthened to expose the actin binding site.

Previous Check answer

Question map41 / 93

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93

Current Correct Answered Incorrectly Reviewed 0 Remaining 93

Marked Questions0

No marked questions.

Answered Incorrectly0

No incorrect answers.

HESI-A2 Web TestEngine demo