Which of the following statements regarding the thymus gland or its hormone is NOT true?
A) The thymus secretes thymosin.
B) Thymosin is important for proper development of the immune system.
C) At puberty, the thymus gland begins to shrink.
D) The thymus gland is located in the mediastinum just below the heart.
D) The thymus gland is located in the mediastinum just below the heart.
The thymus gland is located in the mediastinum anterior and superior to the heart,
not below the heart. The other statements are true.
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Which neurotransmitter, produced by the midbrain raphe nuclei, has major effects on mood?
A. Serotonin B. Acetylcholine C. Gamma-aminobutyric acid (GABA) D. Norepinephrine E. Dopamine
Of the following HLA ?-chain loci, which one exhibits the highest degree of polymorphism?
a. HLA-A b. HLA-B c. HLA-C d. HLA-DP e. HLA-DR.
Corticosteroids are hormones produced by the adrenal medulla
Indicate whether the statement is true or false
A report from the Brooking Institute suggested that the debate over how to address the drug problem is based on
a. the strength of the military c. speculation, not on fact b. the strength of the police force d. the amount of money available to address the problem