When exposed to ultraviolet light, keratinocytes convert a steroid precursor into ________, a molecule that is crucial for regulation of calcium levels.

A. phosphorus
B. calcitonin
C. creatine
D. calcitriol
E. cholecalciferol


Answer: E

Anatomy & Physiology

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Which of the following waves of an ECG pattern is/are correctly described?

A) QRS complex—repolarization of ventricles B) P wave—depolarization of atria C) QRST complex—depolarization of ventricles D) T wave—depolarization of ventricles

Anatomy & Physiology

True or False? The distribution of blood volume in veins are arteries is very close to equal.

Answer the following statement true (T) or false (F)

Anatomy & Physiology

Which of the following is not considered an upper respiratory infection?

a. Rhinitis. b. Pharyngitis. c. Laryngitis. d. Bronchitis.

Anatomy & Physiology

Murphy, a male Golden Retriever, required a/an ________________________ (incision into the abdomen) to see if he had an intestinal obstruction

Fill in the blank(s) with correct word

Anatomy & Physiology