Thymosin and thymopoietin assist in the maturation of:
A) alpha cells. B) chief cells. C) T lymphocytes. D) B lymphocytes.
Answer: C
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Answer the following statements true (T) or false (F)
1. Fluid makes up about 25% of the body weight of the average adult. 2. The percentage of body water increases slightly over the first 10 years of life. 3. No matter how dehydrated the body gets, it will continue to lose water through the lungs and skin. 4. One of the first signs of dehydration is the reduction in the production of saliva. 5. Proteins are considered negative ions.
When comparing the dermis with the hypodermis, the dermis
A. is a more vascular tissue than the hypodermis. B. and the hypodermis do not contain collagen. C. contains melanocytes; the hypodermis does not. D. is divided into two layers; the hypodermis is not. E. has more fat cells than the hypodermis.
Under the microscope, which cell type is visible in a tendon slide?
A. Muscle fiber B. Reticular cell C. Collagen cell D. Fibroblast E. Mast cell
Which of the following types of abnormal contractions of skeletal muscle may be caused by holding a position for a prolonged period?
a) spasm b) fasciculation c) tremor d) fibrillation e) cramp