The material that covers our teeth is known as ____________________
Fill in the blank(s) with correct word
dentin
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A red blood cell contains a large nucleus; it is thicker near the center and thin around the rim of the cell.
Answer the following statement true (T) or false (F)
Contractions of the dartos muscle ________
A) wrinkle the skin that covers the scrotum B) bring the testes closer to the body when body temperature increases C) result in the ejection of sperm from the penis D) draw the testes away from the body when temperature decreases
By what week of prenatal development will organogenesis be complete?
A) week 4 B) week 8 C) week 12 D) week 16
Define oxyhemoglobin
A) Oxyhemoglobin is hemoglobin that has less than 4 molecules of oxygen bound. B) Oxyhemoglobin is hemoglobin that has 4 molecules of carbon dioxide bound. C) Oxyhemoglobin is hemoglobin that has less than 4 molecules of carbon dioxide bound. D) Oxyhemoglobin is hemoglobin that has 4 molecules of oxygen bound. E) Oxyhemoglobin is hemoglobin with 4 molecules of oxygen bound and 4 molecules of carbon dioxide bound.