The follicular cells produce two iodine-containing hormones derived from the amino acid __________: tetraiodothyronine (T4) and __________
Fill in the blank(s) with correct word
tyrosine; tri-iodothyronine (T3)
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The omental bursa:
A) is a completely sealed-off recess of the peritoneal cavity. B) is located anterior to the stomach. C) can contain pancreatic fluid following rupture of the pancreas. D) has medial and lateral recesses. E) contains the portal vein.
Where are unmyelinated nerve fibers surrounded by Schwann cells?
A. In the PNS B. In the CNS C. In the PNS and CNS D. Nowhere. Unmyelinated nerve fibers are never surrounded by Schwann cells.
The three main anatomical regions into which the ear is divided are
A) malleus, incus, and organ of Corti. B) external ear, middle ear, and inner ear. C) external ear, tympanum, and stapes. D) ceruminous gland, cochlea, and utricle. E) None of the answers are correct.
Megakaryocytes produce
A) proteins. B) membranes. C) platelets. D) enzymes. E) All of the answers are correct.