When follicular cells of the thyroid are stimulated to secrete thyroid hormone (TH), they take up TH precursors from the inside of the follicle, transport and enzymatically modify them within a lysosome, and release TH to the blood.
Answer the following statement true (T) or false (F)
True
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Which may be involved in an autonomic reflex?
A. Smooth muscle contraction B. Cardiac muscle contraction C. Secretion by glands D. All of the choices are correct. E. None of the choices is correct.
Which muscle is the primary dorsiflexor of the foot at the ankle?
A. Tibialis anterior B. Extensor hallucis longus C. Fibularis brevis D. Extensor digitorum longus E. Gracilis
Stenosis of the aortic valve is associated with all of the following except:
A) turbulence as the blood exits the heart. B) murmurs heard with a stethoscope. C) thrills felt on the surface of the chest. D) acute occurrence. E) left ventricular hypertrophy.
The term "myotomy" means incision into:
A) joints B) tendons C) muscles D) spinal cord