### container | vessel:

Blood vessel
* All blood vessels have three layers called tunics.
* Many blood vessels nourish the optic nerve with blood rich in oxygen and nutrition.
* Most blood vessels carry blood
  - have capillaries
  - move blood
  - possess sympathetic vasoconstrictor nerves but lack vasodilator nerves
  - pump blood
* Most blood vessels supply heart muscles
* Some blood vessels affect blood pressure
  - are evident in among the cells
* Some blood vessels are near skin surfaces
  - bring blood
  - can narrow
* Some blood vessels carry calcium
  - nicotine
  - nourishment
* Some blood vessels cause blockage
  - damage
  - renal damage
  - connect arteries
  - enter channels
* Some blood vessels fill with red wax
  - form scars
  - have walls
  - lead to damage
  - look like books
* Some blood vessels pass through canals
  - central canals
  - cord
  - umbilical cord
  - regulate nutrition
  - show blockage
  - sit on tops
* Some blood vessels supply arms
  - brain structures
* Some blood vessels support horny sheaths
  - thin sheaths
* Some blood vessels surround pancreases
  - renal tubules
* absorb the sugars and amino acids across villus border.
* allow water to pass through to replenish the space outside our cells.
* appear in the yolk sac.
* are also frequently targets of disease in the kidney
  - arranged vertically along the tissue junctions
  - intricate networks of tubes that transport blood throughout the entire body
  - often intact presumably due to their particular basal lamina
  - part of circulatory systems
  - similar to garden hoses, some are larger and some are as small as one cell
* are the first indicator of the formation of the circulatory system
  - suppliers of oxygen, nutrients, and regulatory factors
  - tiny tubes that carry blood through the body
* are tubes of different sizes that transport blood to and from the heart
  - various diameters through which the blood is transported
* are visible beneath the intestinal mucosa, which glistens from mucous secretions
  - in the lesion
* become edematous, with hemorrhage and clotting leading to tissue necrosis
  - less elastic
  - more visible
  - wider and more elastic, blood pressure decreases and new capillaries form
* being pinched can impair the circulation into one or both upper extremities.
* bring nourishment and minerals to the bone.
* can vary and some people have extra blood vessels or are missing blood vessels.
* carry blood from the heart to the entire body and then back to the heart
  - throughout the body, which moves because of the beating of the heart
* collapse and pressure is put upon the organs surrounding the stomach.
* collect blood and take blood to gills
  - food for the growing embryo from the energy-rich yolk material
* connect to the placenta.
* consist of several kinds of cells.
* constrict in an attempt to divert the blood to better-oxygenated areas of the lung.
* cover all but the midventral part of the yolk.
* develop rapidly.
* dilate so the blood can circulate more quickly, closer to the skin's surface.
* dilate, the flow of blood to the skin increases and the muscles relax.
* emerge perpendicular to the falciform process to run on the surface of the retina.
* enter and leave the thymus via the connective tissue septae
  - the central nervous system through holes in the meningeal layers
* form and grow into the perichondrium, transporting stem cells into the interior.
* get stiffer with age.
* going to the penis dilate, and blood fills the penis causing it to become engorged.
* grow into matrix, and cells give rise to osteoblasts that form superficial bone.
* have a lining of a layer of cells
  - thin lining composed a single layer of a special type cell
  - elastic fibers
* indicate a viable embryo.
* invaginate into the ventricular system forming the choroid plexus.
* leak and are no longer able to carry blood to organs
  - fluid and blood into the retina, causing loss of vision
* lose a certain amount of elasticity with aging.
* penetrate it to supply blood to the nerve fibers and surrounding tissue.
* provide a closed transport system for blood leaving and returning to the heart
  - for a continuous route for blood leaving The heart to return to the heart
* relax and high blood pressure drops
  - pressure goes down
* remain somewhat dilated, providing oxygen-rich blood.
* reorganize thru the new dura membrane.
* run through a bone, and nerves surround it.
* run throughout and marrow fills the spaces between the tissue
  - the spongy bone, and marrow fills the spaces between the bone tissue
* rupture because of being softened.
* spread and bring life to what is becoming living tissue.
  - tissues with oxygen and nutrients necessary for survival and growth
* surround and penetrate the perichondrium, becoming the periosteum
  - the renal tubule, and urine forms in it
* swell or shrink, muscles know and head pain in the result.
* transfer heat to other vessels.
* traverse the dome and cast shadows on the underlying structures.
* warm the air and mucus moistens it.