Which two organ systems are involved in directly regulating blood pH?
A) Lymphatic and digestive
B) Urinary and respiratory
C) Skeletal and cardiovascular
D) Urinary and digestive
Answer: B
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In the cell-mediated immune response, T cells secrete ________, which activate additional components of the immune system.
A. histamine B. complement C. collagen D. cytokines E. antibodies
Cyanosis is caused by an increased blood concentration of
A. deoxyhemoglobin. B. oxyhemoglobin. C. carbon monoxide. D. carbon dioxide.
Which type of RNA links the genetic information in the nucleus with the cytoplasmic sites of protein synthesis?
A) transfer RNA B) coding RNA C) ribosomal RNA D) codon RNA E) messenger RNA
ADH (antidiuretic hormone)
A. is produced by cells of the anterior pituitary. B. travels on axons to its target tissue. C. is stored and released from the posterior pituitary. D. travels in the blood from the hypothalamus to the posterior pituitary. E. has the uterus as its primary target.