Which two organ systems work to correct pH imbalances in the body?
A) urinary and endocrine B) digestive and respiratory
C) endocrine and nervous D) respiratory and urinary
Answer: D
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During the third week of development, what is the result of gastrulation?
A. It converts the epiblast into a hypoblast. B. It converts the hypoblast into endoderm. C. It forms the primitive streak. D. It forms the neural tube. E. It forms the amniotic cavity.
The internal clock of mammals appears to be located in the
A) choroid plexus. B) suprachiasmatic nucleus. C) pituitary gland. D) brain stem. E) pons.
The chemical signal that makes platelets sticky upon aggregation is
a. ADP b. ATP c. prostacyclin d. thromboxane e. thrombopoietin
Which of the following is not a component of the limbic system?
A) amygdaloid body B) cingulate gyrus C) globus pallidus D) hippocampus E) fornix