Haversian canals
Haversian canals .. Any of the tiny, interconnecting, longitudinal channels in bone tissue through which blood vessels, nerve fibers, and lymphatics pass.
Foramen
They are part of the microscopic structure of compact bone. Compact bone is solid, dense, and smooth.The structural unit of compact bone is the Haversian system or Osteon. These are elongated cylinders cemented together to form the long axis of a bone.Components of Haversian system consists of osteocytes (spider-shaped bone cells that lie in "lacunae") that have laid down a matrix of collagen and calcium salts in concentric lamellae (layers) around a central Haversian canal containing blood vessels and nerves.Each system has communicating canals within compact bone with other systems.
None. The sea squirts have a unique tube shaped heart with vessels occasionally called channels, but no chambers.
Epithelium
I think the document itself is called a charter but it is actually called the mayflower compact
The smallest blood vessels are called capillaries.
Compact bone is the outer region of all the bones in your body.There are two basic parts of each of your bones:There is an outer hard layer of bone called either compact bone or cortical bone. this layer is much more dense.There is an inner layer of bone called either cancellous bone or trabecular bone. This is a softer bone and contains bone marrow and much more blood vessels than the cortical (compact) bone.
The word is compact.
The Haversian canals carry blood vessels and nerves to and from the bone.
Compact bone is the outer region of all the bones in your body.There are two basic parts of each of your bones:There is an outer hard layer of bone called either compact bone or cortical bone. this layer is much more dense.There is an inner layer of bone called either cancellous bone or trabecular bone. This is a softer bone and contains bone marrow and much more blood vessels than the cortical (compact) bone.
Bronchioles