Which of the following can regulate the skeletal system?
A. Estrogen
B. Calcitonin
C. Testosterone
D. All of the choices are correct.
Answer: D
Anatomy & Physiology
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The adrenal medulla secretes mostly ________.
A. epinephrine (adrenaline) B. endorphins C. acetylcholine (ACh) D. norepinephrine (noradrenaline) E. dopamine
Anatomy & Physiology
High blood glucose levels cause an increased secretion of ________.
A. erythropoietin B. calcitonin C. insulin D. glucagon E. growth hormone
Anatomy & Physiology
The amino acids that must be consumed in the diet are called essential. Nonessential amino acids
Anatomy & Physiology
In contrast to mammals, the lungs of birds are comparatively
a. small and inelastic. b. large and inelastic. c. small and more elastic. d. large and more elastic.
Anatomy & Physiology