Dopamine is secreted by the ________ and is deficient in ________ disease.

A. substantia nigra; Parkinson
B. medulla oblongata; Huntington
C. amygdala; Lou Gehrig's
D. cerebral cortex; Alzheimer


Answer: A

Anatomy & Physiology

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Organs are to systems as

a. cells are to organs b. tissues are to organs c. cells are to systems d. none of the above

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_____ reactions allow for the exergonic reactions to provide energy required for the endergonic reactions

Fill in the blank(s) with the appropriate word(s).

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Platelets form from large cells called __________.

a) thrombocytes b) lymphoblasts c) macrophages d) megakaryocytes

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The ________ becomes part of the umbilical cord, serves as a shock absorber for the embryo, and produces formed elements of blood and germ cells for the embryo. 

A. amnion B. chorion C. yolk sac D. allantois

Anatomy & Physiology