A long bone is covered externally with a sheath called the ________, whereas the marrow cavity is lined with the ________.
A. diaphysis; epiphysis
B. periosteum; endosteum
C. endosteum; periosteum
D. compact bone; spongy bone
E. epiphysis; diaphysis
Answer: B
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Which of the following is/are not part of the axial skeleton?
A. The sternum B. The parietal bone C. The clavicles D. The vertebrae E. The ribs
Which of the following statements best describes angular movements?
A) They allow movement only in one plane. B) They allow movement in several planes. C) They occur only between bones with flat articular processes. D) They change (increase or decrease) the angle between two bones.
Using the figure above, identify the labeled part.
1. Label A: ______________________________
2. Label B: ______________________________
3. Label C: ______________________________
4. Label D: ______________________________
5. Label E: ______________________________
6. Label F: ______________________________
7. Label G: ______________________________
8. Label H: ______________________________
Recent fossil evidence shows a placoderm with a developing embryo inside her body. How might we have been able to speculate that placoderms were viviparous in the absence of such evidence?
What will be an ideal response?