Osteoclasts are
A. cells that secrete bone matrix.
B. cells that break down bone matrix.
C. immature bone cells that give rise to osteocytes.
D. mature bone cells that maintain the matrix.
Answer: B
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For each of the following species, list the term for an intact female. pig
What will be an ideal response?
The force per unit area that blood places on the inside wall of a blood vessel
A. is greater during diastole. B. is greater in the inferior vena cava than in the common iliac vein. C. is called the pulse. D. is called the blood pressure. E. increases the further the vessel is from the heart.
Between weeks 3 and 8 of development, a developing individual is considered a ________.
A. zygote B. blastocyst C. fetus D. embryo E. trophoblast
The lymphatic system can help cancer cells ________ since cancer cells may enter, circulate, and later exit porous lymphatic capillaries.
A. metastasize B. mutate C. die off D. revert to normal cells