Under what circumstances does a secondary oocyte complete meiosis II?
A. In response to stimulation by FSH during the second week of the menstrual cycle
B. In response to the LH surge at ovulation
C. Upon reaching the uterus
D. Upon fertilization
E. Upon entering the uterine tube
Answer: D
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Which of the following statements correctly describes the nodes of Ranvier?
A) They are areas of myelin-covered axonal membrane. B) They are surrounded by lipid-rich Schwann cells. C) They are often referred to as internodes of the axons. D) They contain a high density of voltage-gated channels.
Using the figure below, identify the labeled part.
1) Label A: ______________________________
2) Label B: ______________________________
3) Label C: ______________________________
4) Label D: ______________________________
5) Label E: ______________________________
6) Label F: ______________________________
7) Label G: ______________________________
8) Label H: ______________________________
9) Label I: ______________________________
10) Label J: ______________________________
A young child's cranium is relatively smaller compared to the rest of its body than that of an adult.
Answer the following statement true (T) or false (F)
During skeletal muscle contraction, to what do myosin heads bind?
A) myosin filaments B) actin filaments C) Z discs D) thick filaments E) the H zone