Thyroid-stimulating immunoglobulin is
a. able to stimulate production of T3 and T4 secretion by the thyroid
b. inhibited by T3 and T4 in a negative-feedback fashion
c. found in all people but is present in excessive amounts in people with Grave's disease
d. both a and c
e. both b and c
A
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Radioisotopes contain
A. an insufficient number of neutrons.?B. an insufficient number of electrons.?C. an insufficient number of protons.?D. an excess of protons.?E. an excess of neutrons.
Which of the following is a deeper layer of skin?
a. epidermis b. dermis
Name the four chambers of the heart
A) superior atrium, inferior atrium, superior ventricle, inferior ventricle B) left superior chamber, right superior chamber, left inferior chamber, right inferior chamber C) superior lesser chamber, inferior lesser chamber, superior greater chamber, inferior greater chamber D) superior pulmonary chamber, inferior pulmonary chamber, superior systemic chamber, inferior systemic chamber E) left atrium, left ventricle, right atrium, right ventricle
Bronchoconstriction results from relaxation of smooth muscle in the walls of airways.
Answer the following statement true (T) or false (F)