A significant change in vertebrate hearts began when
a. the ancestors of whales returned to the oceans.
b. flight evolved in birds.
c. reptiles moved onto land.
d. air-breathing fish evolved.
e. amphibians transitioned to life on land and in water.
D
Anatomy & Physiology
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During its mitotic phase a cell is
A. duplicating its DNA. B. growing in size. C. dividing. D. undergoing maintenance.
Anatomy & Physiology
Roughly 98% of the potassium content of the body lies within which of the following?
A) lymph B) cerebrospinal fluid C) cytosol D) serous fluids E) aqueous humor
Anatomy & Physiology
Normally, the uterus is angled anterosuperiorly within the body, a position referred to as ________.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
The pH of the blood is slightly basic. Which of the following describes this pH?
A. 4.7 B. 7.4 C. 12.6 D. 6.4
Anatomy & Physiology