Nan, age 70, feels more out of breath while exercising. This is probably because
A) the blood flow to her circulatory system has increased.
B) her heart muscle is more responsive to signals from pacemaker cells.
C) her vital capacity has reduced significantly due to aging.
D) her T cells are becoming more effective and efficient.
C
You might also like to view...
When Dennis made breakfast, he poured milk on the counter, then emptied cereal from a box, and finally put a bowl down on top of it all. Dennis has ____.?
a. ?visual agnosia b. ?anosognosia c. ?ideational apraxia d. ?ideomotor apraxia
The major events of growth and sexual maturation associated with puberty typically are completed a year or two after puberty begins
Indicate whether this statement is true or false.
You conducted a t test for independent means, and found that the t score equaled 0. This means that
A) the two population means must be equal. B) the two population variances must be equal. C) the two sample means must be equal. D) the two sample variances must be equal.
An evaluation of Early Head Start found that between ages 3 and 5, the benefits of the program ________, suggesting the need for more intentional educational experiences extending through the preschool years
A) had greatly increased B) had not changed C) had only marginally improved D) had declined or disappeared