What happens to most of the secreted T4?
a. it is phagocytized by target tissues.
b. it is converted into T3 after being peripherally stripped of one of its I atoms.
c. it is the major biologically active form of thyroid hormone at the cellular level.
d. it is split to form two DIT molecules, which are excreted in the urine.
e. it is permitted to exert its full biological effect as a result of epinephrine's permissive actions.
B
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The QRS complex on an ECG tracing represents
A) atrial depolarization. B) atrial repolarization. C) ventricular depolarization. D) ventricular repolarization. E) ventricular contraction.
Mice have a gestation length of:
a. 10 days c. 21 days b. 20 days d. 30 days
A concave lens is used to correct for a myopic eye
Indicate whether the statement is true or false
Microvilli are ____________ than cilia.
Fill in the blank(s) with correct word