No, the ear canals are not directly connected to the sinuses.
Osteons (also called Haversian systems) form the basic structural unit of bone. Inside osteons we find the haversion canal - a central canal that contains the bone's nerve and blood supplies. The haversion canals surround these blood vessels and nerve cells. Communication with osteocytes in lacunae ("small lakes") through canaculi ("small canals") is possibly due to intercommunication channels between the haversion canals.
NO
In compact bone, central canals are connected by tiny channels called perforating canals (or Volkmann's canals). These canals allow blood vessels and nerves to travel between the central canals, facilitating communication and nutrient exchange throughout the bone. This network is essential for maintaining the health and function of the bone tissue.
They connected the middle of the country with the coastal cities
No. Sheffield in inland however it is connected by canals.
They connected the middle of the country with the coastal cities.
Venice, Italy, is known for its intricate network of canals connecting various islands within the city. Suzhou, China, also has a famous canal system that has linked the city to other areas in the Jiangsu province for centuries.
by digging canals
I'm not familiar with the term "haversion canal." It could be a misspelling or a specific term within a particular context. Please provide more details or clarification for a more accurate response.
Lake Huron
Connected the middle of the country cities with other cities and ports on the coasts they facilitated the movement of vast quantities materiel and goods.