________ secrete mucus.
A. Goblet cells
B. Fibroblasts
C. Adipocytes
D. Reticular cells
Answer: A
Anatomy & Physiology
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__________ bone is always surrounded by __________.
A. Compact; cartilage B. Compact; spongy bone C. Spongy; compact bone D. A diaphysis; an epiphysis E. Spongy; a medullary cavity
Anatomy & Physiology
In this close-up image of a lung, what structure does number 1 indicate?
A. Respiratory bronchiole B. Alveolar duct C. Alveolus D. Terminal bronchiole E. Bronchiole
Anatomy & Physiology
The only flagellated cells in humans are ________.
ova sperm goblet cells tumor cells
Anatomy & Physiology
Which of the following structures of the cardiac conduction system transmits electrical signals directly to the Purkinje fibers?
A. AV bundle B. AV node C. Internodal fibers D. Right and left bundle branches E. SA node
Anatomy & Physiology