Two of the four globin chains in the hemoglobin molecule are called alpha chains and the other two are called ________ chains.

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


beta

Anatomy & Physiology

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Which is reabsorbed under hormonal control by the proximal tubule?

a. sodium. b. amino acids. c. glucose. d. all of these answers. e. none of these answers.

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Subunits of skeletal muscle fibers that are composed of sarcomeres are called ________.

A. transverse tubules B. myofilaments C. sarcolemmas D. myofibrils

Anatomy & Physiology

Apnea is the slowing of respiration as occurs during sleep

Indicate whether the statement is true or false.

Anatomy & Physiology

The larynx, trachea, bronchi, and bronchioles all make up the

A) upper respiratory tract. B) lower respiratory tract. C) internal respiratory tract. D) alveoli of the respiratory tract. E) respiratory mucosa.

Anatomy & Physiology