A 40 year old female would have a maximum heart rate of 220 beats a minute.
260 beats a minute.
180 beats a minute.
90 beats a minute.

i think its 180 but did you know some 40 yr old women have a heart beat of 0 bpm after having sexual intercourse?

1. h

2.a

3. i

4. d

5. b

6.f

7.g

8.e

9.c

i hope that this is

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.