At rapid heart rates,
a. the lengths of systole and diastole shorten equally.
b. the length of systole stays almost constant, but the length of diastole shortens considerably.
c. the length of systole increases at the expense of diastolic time shortening.
d. diastolic time lengthens, and systolic time shortens.
e. none of these answers.
B
You might also like to view...
If a substance has a pH that is greater than 7, it is
A) neutral. B) acidic. C) alkaline. D) a buffer. E) a salt.
Which of the following is NOT part of the vulva?
A. Mons pubis B. Clitoris C. Labia majora D. Vagina
Name the process that changes the shapes of bones to adjust to bone stress, replaces old bone matrix and facilitates the repair of broken bones.
A. Osteomalacia B. Bone remodeling C. Appositional bone growth D. Bone reabsorption
Which is true of free nerve endings?
A) They are classified as proprioceptors. B) They respond to stretch. C) They respond to pain and temperature. D) They lie deepest in the dermis.