Which primary germ layer gave rise to the cells that eventually became the central nervous system?:
a. endoderm
b. ectoderm
c. acrosome
d. mesoderm
Answer: b. ectoderm
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The primary auditory cortex is located in the ________.
A) terminate in the spinal cord B) carry proprioceptive inputs to the cerebellum C) give rise to conscious experience of perception D) are found in the dorsal columns of the spinal cord
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Indicate whether the statement is true or false
Which occurs during the secretion of hydrochloric acid by gastric epithelial cells?
A. Bicarbonate ions are secreted into the hepatic portal circulation. B. There is a decrease in the pH of blood in the hepatic portal circulation. C. Both H+ and K+ are actively pumped from the epithelial cell cytosol into the lumen of the stomach. D. Chloride ions are pumped from the cytosol of the gastric epithelial cells into the hepatic portal circulation blood. E. Vesicles containing H+/K+ -ATP-ase proteins are endocytosed into vesicles within the gastric epithelial cells.