Describe the trophoblast
A) The trophoblast is the cell layer surrounding the blastocyst.
B) The trophoblast is the fluid-filled chamber filled with amniotic fluid.
C) The trophoblast is a solid ball of cells.
D) The trophoblast is the inner cavity within the blastocyst.
E) The trophoblast is a pre-embryo at the four-cell stage.
Answer: A
You might also like to view...
During an annual physical, your nurse took a urine and blood sample to ensure that your protein levels were normal. When the results came back, she informed you that there was an excessive amount of protein found in your urine
Which of the following would most likely be true? A) Blood cells were pushed from the capillaries. B) Proteins were trapped in the inner layer of the nephron. C) Proteins crossed over into the glomerular capsule. D) The glomerular filtrate is extremely dilute.
Keratolytics promote the loosening of the outer layers of the epidermis
a. true b. false
Oxygen-poor blood travels from the right atrium into the right ventricle through the ________ valve.
A) bicuspid B) aortic C) mitral D) tricuspid E) pulmonary
Place the classes of vertebrae in order as they are situated in the vertebral column from superior to inferior. 1. cervical vertebrae 2. coccygeal vertebrae 3. lumbar vertebrae 4. sacral vertebrae 5. thoracic vertebrae
A) 1, 3, 5, 4, 2 B) 1, 5, 3, 2, 4 C) 1, 3, 5, 2, 4 D) 1, 5, 3, 4, 2