Shafts of hair are composed of
A. dead dermal cells.
B. dead epidermal cells.
C. living epidermal cells.
D. living dermal cells.
Answer: B
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Which of the following are the two anticoagulants produced by the body?
A) protacyclin and heparin B) heparin and plasmin C) tissue plasminogen activator and plasmin D) antithrombin III and plasmin E) antithrombin III and heparin
Describe factors within the stomach and duodenum, and those outside the digestive system that affect gastric motility and emptying
What will be an ideal response?
Osteoporosis is most common in elderly women because of the lack of ________, which would otherwise inhibit ________.
A. exercise; osteoblast activity B. parathyroid hormone; osteocyte activity C. estrogen; osteoclast activity D. dietary calcium; estrogen production E. osteoblasts; osteoclast activity
The active sites to which cross-bridges attach are found on the
A. sarcoplasmic reticulum. B. actin myofilaments. C. Z disks. D. T tubules. E. myosin myofilaments.