Blood volume is maintained by the
A) Kidney.
B) Liver.
C) Gallbladder.
D) Spleen.
Answer: A
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Which of the following structures is the richest in lipid content?
A. Dura mater B. Gray matter C. Arachnoid mater D. Pia mater E. White matter
__________ stimulates _________ secretion by means of an excitation-secretion coupling process
a. Phosphate, PTH b. Glucose, insulin c. Glucose, epinephrine d. Amino acids, growth hormone e. Fats, cortisol
The term "codon" refers to
A. a three-nucleotide sequence of DNA that codes for a protein. B. an amino acid that is coded for by three bases of DNA. C. a three-base sequence of mRNA. D. the part of a rRNA molecule where a new amino acid is added. E. the part of tRNA that is a triplet of bases that forms hydrogen bonds with complementary sequences.
Which of the following results from endodermal contributions?
A) all cardiovascular components B) brain and spinal cord C) dermis and hypodermis D) stem cells that produce gametes E) nephrons