The blastodisc (bilaminar germinal disc) of the early embryo consists of the
A. cytotrophoblast and the epiblast.
B. epiblast and the trophoblast.
C. hypoblast and the cytotrophoblast.
D. hypoblast and the trophoblast.
E. hypoblast and the epiblast.
Answer: E
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The concentration of calcium in the cytosol of most resting cells is very much lower than the concentration of extracellular calcium.
Answer the following statement true (T) or false (F)
Triploblastic animals are
A) Acoelomate. B) Pseudocoelomate. C) Coelomate. D) Partially coelomate.
Nitroglycerine causes vasodilation of blood vessels due to its effects on levels of ________.
A. prostacyclin B. nitric oxide C. bradykinin D. histamine
Found in the urinary bladder, ________ resembles ________, but the apical cells are rounded, not flattened.
A. urothelium; stratified squamous epithelium B. urothelium; simple cuboidal epithelium C. stratified squamous epithelium; pseudostratified epithelium D. simple columnar epithelium; pseudostratified epithelium E. stratified squamous epithelium; stratified columnar epithelium