I was talking to my science teacher about the body specifically the red bone marrow.
She said that blood is created in the red bone marrow. Does that mean that if you were to cut a fresh bone open it would bleed?
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2$\begingroup$ What research have you done before asking it here? Bone marrow is a solid spongy tissue, and won't bleed. $\endgroup$ – another 'Homo sapien' Apr 10 '17 at 8:19
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$\begingroup$ @another'Homosapien' but don't harvasian canals have blood vessels and nerves? $\endgroup$ – YAHB Apr 10 '17 at 13:48
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$\begingroup$ @another'Homosapien' Yes. Harvesian canal. It ought to bleed right? $\endgroup$ – YAHB Apr 10 '17 at 13:54
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$\begingroup$ @Homosapien. I looked at the make-up of a bone. $\endgroup$ – Dragon born Apr 11 '17 at 19:43
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1$\begingroup$ No one really knows where the term dry as bone came from, many assume it comes from sun bleached bone which was the easy way to dry bone for other uses. $\endgroup$ – John Apr 13 '17 at 20:07
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Yes, bones too bleed if they get damaged (break or bruise). This is because bones are highly vascularised organs and breaking of bones will indeed rupture the blood vessels causing bleeding. Main artery which supplies blood to bone is nutrient artery , others are epiphyseal, metaphyseal and periosteal arteries. Skeletal system receives about 15.6% of cardiac output. Since bones contain very low percentage of water ( about 31% ) comapred to others like skin(64%),brain and heart (73%) and lungs ( 83%). So the saying "as dry as bone " stills holds well.
Sources:
1-https://www.mananatomy.com/basic-anatomy/blood-supply-bones
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$\begingroup$ You can also have bone bruises, which I believe are the result of bleeding inside the bone. $\endgroup$ – jamesqf Apr 10 '17 at 19:23
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2$\begingroup$ Thanks for the information. It feels good to actually "know" people that will help me with questions. If you ever need anything tell me and I'll try to help. $\endgroup$ – Dragon born Apr 11 '17 at 18:15
