Which of the labeled structures in the diagram is formed as the result of cartilage being replaced by bone after the cessation of bone growth?
a) A
b) B
c) C
d) D
e) E
d
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__________ is a hormone that is frequently involved with reproductive processes, that is also part of a positive feedback loop
Fill in the blank with the correct word.
Match the structure with the description.
a. right atrium b. right ventricle c. left atrium d. left ventricle e. tricuspid valve f. mitral valve g. aortic semilunar valve h. pulmonary semilunar valve i. aorta j. pulmonary artery k. pulmonary vein l. inferior vena cava 1 _____ Blood passing through the tricuspid valve enters this chamber 2. _____ Valve that prevents blood from falling back into the left ventricle 3. _____ Chamber that pushes blood through the aortic semilunar valve when contracted 4. _____ Valve through which the left ventricle pushes blood into an artery 5. _____ Blood vessel from which blood empties into the right atrium 6. _____ Blood vessel that returns blood to the right atrium 7. _____ Chamber that blood from the pulmonary vein enters 8. _____ Valve that prevents blood from falling back into the right ventricle 9. _____ Valve that blood in the left ventricle passes through 10. _____ Blood vessel into which blood in the right ventricle is pushed 11. _____ Valve that blood in the right ventricle passes through 12. _____ Heart chamber into which blood from the superior vena cava enters
Sperm cells are stored for maturation in the
a. anterior pituitary b. ductus deferens c. epididymis d. Leydig cells e. urethra
Arbor vitae refers to ________
A) cerebellar gray matter B) cerebellar white matter C) ascending tracts D) flocculonodular lobe