The First System in the Body to Become Visibly Differentiated

question 20

Multiple Choice

The first system in the body to become visibly differentiated during development is the

• A) digestive system.
• B) cardiovascular system.
• C) respiratory system.
• D) nervous system.
• E) reproductive system.

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Definitions:

Sign Test

An assessment method without parametric assumptions, designed to check for differences in the median of matched data points.

Randomized Block Experiment

An experimental design that groups subjects into blocks based on certain characteristics before randomly assigning treatments within each block to reduce variation.

Interval

A range of values between two points, often used in statistics to describe the confidence levels of estimations or predictions.

Chi-Squared Distributed

Describes a statistical distribution where the sum of the squares of a number of independent standard normal random variables is chi-squared.