how is blood capillaries formed
Answers
During early embryonic development new capillaries are formed through vasculogenesis, the process of blood vessel formation that occurs through a de novo production of endothelial cells which then form vascular tubes.
ɢ☺oᴅ ᴍᴏʀɴɪɴɢ ᴅᴇᴀʀ
ᴅᴜʀɪɴɢ ᴇᴀʀʟʏ ᴇᴍʙʀʏᴏɴɪᴄ ᴅᴇᴠᴇʟᴏᴘᴍᴇɴᴛ ɴᴇᴡ ᴄᴀᴘɪʟʟᴀʀɪᴇs ᴀʀᴇ ғᴏʀᴍᴇᴅ ᴛʜʀᴏᴜɢʜ ᴠᴀsᴄᴜʟᴏɢᴇɴᴇsɪs, ᴛʜᴇ ᴘʀᴏᴄᴇss ᴏғ ʙʟᴏᴏᴅ ᴠᴇssᴇʟ ғᴏʀᴍᴀᴛɪᴏɴ ᴛʜᴀᴛ ᴏᴄᴄᴜʀs ᴛʜʀᴏᴜɢʜ ᴀ ᴅᴇ ɴᴏᴠᴏ ᴘʀᴏᴅᴜᴄᴛɪᴏɴ ᴏғ ᴇɴᴅᴏᴛʜᴇʟɪᴀʟ ᴄᴇʟʟs ᴡʜɪᴄʜ ᴛʜᴇɴ ғᴏʀᴍ ᴠᴀsᴄᴜʟᴀʀ ᴛᴜʙᴇs.ɪᴛ ᴄᴏɴsɪsᴛs ᴏғ ᴄɪʀᴄᴜʟᴀʀʟʏ ᴀʀʀᴀɴɢᴇᴅ ᴇʟᴀsᴛɪᴄ ғɪʙᴇʀs, ᴄᴏɴɴᴇᴄᴛɪᴠᴇ ᴛɪssᴜᴇ, ᴀɴᴅ sᴍᴏᴏᴛʜ ᴍᴜsᴄʟᴇ ᴄᴇʟʟs. ᴛʜᴇ ɪɴɴᴇʀ ʟᴀʏᴇʀ ( ᴛᴜɴɪᴄᴀ ɪɴᴛɪᴍᴀ ) ɪs ᴛʜᴇ ᴛʜɪɴɴᴇsᴛ ʟᴀʏᴇʀ, ᴄᴏᴍᴘʀɪsᴇᴅ ᴏғ ᴀ sɪɴɢʟᴇ ʟᴀʏᴇʀ ᴏғ ᴇɴᴅᴏᴛʜᴇʟɪᴜᴍ sᴜᴘᴘᴏʀᴛᴇᴅ ʙʏ ᴀ sᴜʙᴇɴᴅᴏᴛʜᴇʟɪᴀʟ ʟᴀʏᴇʀ. ᴄᴀᴘɪʟʟᴀʀɪᴇs ᴄᴏɴsɪsᴛ ᴏғ ᴀ sɪɴɢʟᴇ ʟᴀʏᴇʀ ᴏғ ᴇɴᴅᴏᴛʜᴇʟɪᴜᴍ ᴀɴᴅ ᴀssᴏᴄɪᴀᴛᴇᴅ ᴄᴏɴɴᴇᴄᴛɪᴠᴇ ᴛɪssᴜᴇ.