Sonic muscles are able to shorten even more than most muscles because of perforations in their __________ that allow the thick filaments to pass into adjacent sarcomeres
Fill in the blank with the correct word.
Answer: Z-disks
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What structure sends the electrical impulse to stimulate the atria to contract?
A. Purkinje fibers B. Sinoatrial node C. Atrioventricular node D. Atrioventricular bundle
The genotypes and phenotypes that result from a cross of AA and Aa (A = normal pigmentation and a = albinism) are
A. phenotypes:all normal; genotypes:50% homozygous dominant and 50% heterozygous. B. phenotypes:50% normal and 50% albino; genotypes:all heterozygous. C. phenotypes:all albino; genotypes:50% heterozygous and 50% homozygous recessive. D. phenotypes:75% normal and 25% albino; genotypes:75% heterozygous and 25% homozygous.
Identify three sources where research articles can be found
What will be an ideal response?
With a resting potential of -70mV and a threshold of -60mV, which of the following is a likely result of facilitation?
A. -95 mV B. +30 mV C. -67 mV D, -55 mV