Absence of postural muscle tone is descriptive of or occurs during
A. slow-wave sleep.
B. paradoxical sleep.
C. both slow-wave sleep and paradoxical sleep.
D. neither slow-wave sleep nor paradoxical sleep.
B
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The iron of the heme unit of hemoglobin is transported in the blood by the protein ________ after the aged erythrocytes are phagocytized.
Fill in the blank(s) with the appropriate word(s).
Muscle cells have positively charged ____ ions in greater concentration outside the muscle cell than inside the cell
a. sodium b. potassium c. chloride d. calcium
The acetabular ________ is a lip of connective tissue that deepens the socket of the hip and helps stabilize the joint.
Fill in the blank(s) with the appropriate word(s).
The leading cause of death for children under 1 year of age is
A) motor vehicle accidents. B) falls. C) cardiac congenital malformations. D) sudden infant death syndrome. E) asthma.