The myosin in smooth muscle cells differs from that in skeletal muscle in that smooth muscle myosin requires phosphorylation before it can bind to actin
Indicate whether the statement is true or false.
TRUE
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Which of the following statements about bone growth is TRUE?
A. Most growth in long bones results from interstitial growth. B. In the epiphyseal plate, osteoblasts degenerate to form chondrocytes. C. Endochondral growth in long bones occurs at the epiphyseal plate. D. Bones can not grow by appositional growth. E. Appositional bone growth results in increased bone length.
Which of the following statements regarding the thymus is FALSE?
A) It has follicles similar to those in the spleen. B) It does not directly fight antigens. C) It functions strictly in T lymphocyte maturation. D) Its stroma consists of epithelial tissue.
What is the removal of a tissue sample from patients via surgery or needle to diagnose disease?
A. Biopsy B. Histology C. Autopsy D. Postmortem exam E. All of the choices are correct.
Thyroid hormone is somewhat unique in that it is a
A. biogenic amine that is lipid-soluble. B. protein hormone that is water-soluble. C. steroid hormone that is water-soluble. D. steroid hormone that is lipid-soluble. E. monoamine that is water-soluble.