Identify the primary inspiratory muscles
A) diaphragm and external intercostal muscles
B) diaphragm and internal intercostal muscles
C) internal and external intercostal muscles
D) diaphragm and the rectus abdominis muscles
E) scalenes and serratus anterior
Answer: A
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__________ are the photoreceptors responsible for color vision.
Fill in the blank(s) with the appropriate word(s).
Negative feedback operates to maintain a controlled factor in a relatively steady state, whereas positive feedback moves a controlled variable even further from a steady state
Indicate whether the statement is true or false
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