Answer:
humerus
Explanation:
ik it is for sure not the last two
A. Pacemaker cells located in the atria fire before the pacemaker cells in the ventricles. B. It takes time for hormones to diffuse from the atria to the ventricles to trigger contraction. C.The electrical signal generated in the right atrium is delayed at the AV node before passing to the ventricles. D.The ventricular muscle cells contract more slowly than the atrial muscle cells.
Answer:
EAR (Estimated Average Requirement) is the standard used to estimate daily nutrient needs of half of all healthy individuals.
Explanation:
Estimated Average Requirement (EAR) is basically the daily intake value of a nutrient that is estimated to meet the nutrient requirement of half the individuals which are healthy in a gender group and a life stage.
It is the level of intake for a nutrient at which the needs of 50% of the population will be met. Because the needs of the remaining population will not be met by this amount. It is basically derived from a group estimate.
