When there is a decrease in blood calcium levels, osteoclast activity
a. Stays the same
b. Decreases
c. Increases
Answer: c. Increases
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Combinations of atoms that contain two or more different elements are called
A) molecules. B) compounds. C) mixtures. D) isotopes. E) None of these is correct.
The text mentioned several specializations that allow vipers to eat large prey. The large, heavy-bodied African vipers in the genus Bitis, such as the puff adder (Bitis arietans), provide particularly clear examples of these specializations
List as many of these specializations as you can, and explain how they work together.
Match each of the terms with the correct definition, description, or function.
a. diaphysis b. epiphyses c. periosteum d. endosteum e. medullary cavity f. osteoclast g. osteoblast h. canaliculi i. lacuna j. epiphyseal plate k. diarthrotic l. hematopoiesis m. synarthrotic n. articulations o. amphiarthrotic 1. _____ Bone-forming cells 2. _____ Hollow shaft of the long bone 3. _____ A bone can grow as long as this remains 4. _____ Thin layer of connective tissue that lines the medullary canal 5. _____ Small canals that carry nutrients to bone cells 6. _____ Tough connective tissue surrounding the shaft of long bones 7. _____ Hollow part of the bone where marrow is stored 8. _____ Bone-resorbing cells 9. _____ Small spaces in the bone matrix where bone cells are located 10. _____ Ends of long bones 11. _____ Type of joint that allows no movement 12. _____ Refers to the process of blood cell formation 13. _____ Type of joint that allows for free movement 14. _____ Another term for joints 15. _____ Type of joint that allows for slight, limited movement
The middle layer of the heart wall that is made of cardiac muscle tissue is the ________.
Fill in the blank(s) with the appropriate word(s).