Answer: There are a total of 22 bones in the skull. The skull is not only made up of bones but also cartilages and ligaments. The facial skeleton does not include the teeth and the cartilage of the nose. The skull contains foramina or canals scattered throughout the skull bones.
C because the heart pumps normally with a constant pressure but when it is lower it needs to push harder to get the blood to where it needs to go causing it to malfunction
Answer:
This is True.
Explanation:
Biologists use the fluid mosaic model to describe membrane structure. The framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.
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One reason is that they die and new cells are needed to replace them. If you're cells didn't divide you would die with them. After a while, all cells in you're body are replaced and you are physically not the same man you were before because the set of cells is not the same one.
