To synthesize thyroid hormones, iodine is attached to

A. the amino acid tryptophan.
B. acetyl coenzyme A.
C. cholesterol.
D. the amino acid tyrosine.
E. the amino acid phenylalanine.


Answer: D

Anatomy & Physiology

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Which type of connective tissue is found in the papillary layer of the dermis and contains all of the cell types of connective tissue proper?

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Muscle spasms of the back often are due to the erector spinae contraction

Indicate whether the statement is true or false

Anatomy & Physiology

The indicators that are essential for human life include all of the following EXCEPT ________.

A. coloring B. heart rate C. respirations D. temperature

Anatomy & Physiology

______ occurs when the inside of the plasma membrane becomes more negative, and ______occurs when the inside of the plasma membrane becomes less negative.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology