Muscles contract when calcium ions are released from the sarcoplasmic reticulum of the muscle cell
Indicate whether the statement is true or false
TRUE
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Newborn infants receive a single injection of vitamin K at birth because
A) newborns cannot absorb any of the vitamin K from breast milk or formula. B) the trauma of labor and delivery depletes the newborn's vitamin K stores. C) breast milk is a poor source of vitamin K. D) newborns do not have enough bacteria in their small intestine to make vitamin K.
Several types of blood lipoproteins are synthesized in the:
a. liver. b. spleen. c. pancreas. d. adrenal glands.
In a healthy person, sodium consumed in excess of body needs is predominantly
A. excreted in the feces. B. metabolized in cells. C. stored in the liver. D. excreted by the kidneys.
Which of the following is true of type 1 diabetes?
A) It is classified as an autoimmune disease. B) It is characterized by hypoglycemia. C) It typically develops during middle age. D) It is highly associated with obesity.