Blood vessels such as arteries and veins have connective tissue and certain types of smooth muscle cells. The endothelium is what lines most blood vessels. The basal lamina is usually the outermost layer. Vascular smooth muscles are what we usually call the muscles in the lining of blood cells.
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~kaikers
Answer:
5...i think
Explanation:
around the age of 5 your brain starts to develop the lost because your able to do more then when you were 3 or 4
Answer:
The answer is sex.
Explanation:
It is between two people.Pregnancy happens when a man's sperm fertilizes a woman's egg. During sex, semen is ejaculated from the man's penis into the woman's vagina. When the sperm reaches the egg it begins to fertilize. over the course of nine months the fetus will grow into a baby.
