A blastocyst is a(n)
A) extra-embryonic membrane.
B) solid ball of cells.
C) hollow ball of cells.
D) portion of the placenta.
E) origin of the urinary bladder.
Answer: C
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About 95% of the body is composed of water
Indicate whether the statement is true or false
The rapid increase in ventilation and heart rate that occurs at the onset of exercise:
A. is not altered by training. B. is an anticipatory neural response. C. is driven by arterial blood gas changes. D. reflects an adjustment period where oxygen delivery and consumption are matched. E. is due to the exceeding of the anaerobic threshold.
The ________ is the inner lining of the uterus
A) perimetrium B) myometrium C) germinal epithelium D) uterine lumen E) endometrium
What does "D" represent on the diagram?
A. myosin myofilament B. actin myofilament C. sarcomere D. Z disk E. cross-bridge