The region known as the primitive streak is the site of
A) migration of mesodermal cells to form the endoderm.
B) endoderm formation.
C) ectoderm formation.
D) migration of ectodermal cells to form the mesoderm.
E) amnion formation.
D
You might also like to view...
If a neuron is more positively charged than it is when resting, it is said to be ________.
A. refractory B. repolarized C. depolarized D. polarized
Identify the proper cassette size for use in a metacarpal series
What will be an ideal response?
In a physiology lab, the students designed an experiment to illustrate how the heart responds to changes in blood pressure. Everyone relaxed and then did a headstand. Which of the following observations are consistent with the change in the function of their hearts?
A. Decreased heart rate B. Increased stroke volume C. Increased heart rate D. Decreased stroke volume E. Both decreased heart rate and increased stroke volume
Atrial natriuretic peptide causes which of the following effects in principal cells?
A) increase in glomerular filtration rate B) efferent arteriole dilation C) afferent arteriole constriction D) decreased number of open sodium channels in the apical membrane E) decreased activity of the Na+/K+ pump in the basolateral membrane