The marvelous Mucosa. If a toxin can make its way into the Submucosa, it has access to the circulatory system and lymphatic system there.
The flap of tissue that prevents blood from flowing backward is called a valve. Valves are found in veins and in the heart to ensure that blood flows in one direction and does not pool or backflow.
Blood itself is a tissue and consists of red cell, white cells, and platelets and belong to the cardiovascular system
Muscle tissue is not a type of connective tissue. Connective tissue includes types such as adipose tissue, cartilage, bone, and blood.
Toxins are not considered biological agents, as they are typically produced by living organisms but do not have the ability to replicate on their own like viruses, bacteria, and blood cells.
The connective tissue that has a jelly-like matrix is called "mucous connective tissue." This type of tissue contains fibroblasts and ground substance rich in hyaluronic acid, giving it a gel-like consistency. Mucous connective tissue is found in the umbilical cord of embryos.
The blood-brain barrier prevents various substances that could be poisonous to brain tissue (toxins), as well as many agents of infection, from crossing from the blood stream into the brain tissue.
Astrocytes are most responsible for preventing pathogens and toxins from entering the brain through blood.
It stops bacteria entering the blood.
the valves
valve
your skin of course!
valve
Venous valves .
Venous valves .
Isehemia is the medical term meaning holding back blood from tissue. Ischemia prevents tissue from getting enough oxygen.
a flap of tissue that prevants blood from flowing backward is
The blood brain barrier blocks chemicals from entering brain tissue.