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What does the epiblast give rise to?

From which region do sensory placodes originate during embryonic development?

Which of the following signaling centers, when ectopically placed in the embryo, can induce the formation of a secondary body axis?

What is the difference between totipotent and pluripotent cells?

Match the numbers on the image with the appropriate answer choice below. 

During muscle contraction, which ion is crucial for initiating the interaction between actin and myosin due to the exposure of the active binding site on actin?

The stretch-shortening cycle is a(n) ___________ contraction followed by a(n) ____________ contraction and results in higher levels of power production.

Between each pair below, choose the one, on average, that would produce the most force: Pennated vs. Fusiform Muscle: [1] Small vs. Large Muscle CSA: [2] Type I vs. Type II Muscle Fiber: [3] Lengthened muscle vs. Optimal length: [4] Maximal velocity vs. Minimal velocity: [5] Using vs. not using the SSC: [6]

The notochord plays an important role in:

Based on the steps of the cross-bridge cycle, what would you expect to happen if no ATP is present?