Blood Vessel

carry blood away from the heart; from the heart to another body organ

What are the three types of arterial vessels

largest arteries in the body; closest to the heart; elastic to allow stretch as blood leaves the heart and moves through these arteries

medium arteries; distribute blood to body regions; more muscular to control the distribution of blood to the body parts

smallest arteries; enter the organs; contain precapillary sphincter to control the pressure of the blood entering the capillary

the smallest blood vessels present inside the tissues as beds of many individual capillary vessels

What are the two types of capillaries?

What capillaries have solid endothelium with no holes between the cells; found throughout the body?

What capillaries have "holey" endothelium with spaces/pores between the cells; found in the urinary system?

the middle layer of the blood vessel wall; made of smooth muscle; it is the layer that can contract and constrict the blood vessel or relax to dilate the blood vessel

the outer layer of the blood vessel wall; made of dense fibrous CT; holds the shape of the blood vessel

the inside layer next to the lumen (opening of blood vessel that blood moves through); made of simple squamous epithelium which is endothelium in the cardiovascular system due to its special properties

opening of blood vessel that blood moves through

Which arterial Vessel has the highest BP= 120mmHg

Which Arterial Vessel has a BP=100mmHg

What arterial vessel has BP= 90mmHg

tube system that carries blood through the body

Circulation of the heart

present in the arteriole; controls the pressure of the blood entering the capillary

return blood to the heart; from the body organs to the heart

made of endothelium and tunica adventitia; may contain smooth muscle

What are the two types of venous vessels?

smallest veins; collect blood from capillaries for return to the heart; have small amounts of smooth muscle scattered along the              

largest blood vessels in the body; collapse when empty of blood; contains all 3 tissue layers , with less smooth muscle than arteries; hold the reserve volume of blood (venous reservoir)

valves in veins that close to prevent backflow of blood

pressure across blood vessels:
Artery-
Arterioles-
Capillaries-
Venules-
Veins-

Special vessels found only in the fetus to bypass organs that are not active during development

connection between the aorta and pulmonary trunk; function=to bypass the lungs

home in the interatrial septum between the Right and Left atria; function= to bypass the fetal lungs ( connects the right atrium to the left atrium)

connection between the portal vein to the liver and the inferior vena cava; function= to bypass the liver

2 vessels that carry deoxygenated blood from the fetus to the placenta; function= to pick up oxygen at the placenta and get rid of wastes

1 vessel that carries oxygenated blood from the placenta to the fetus; function= delivers blood with oxygen to the fetus

When are the special vessels found only in the fetus suppose to close off?

swollen areas of veins around the valve; due to blood collection behind the valve; this blood cannot move from behind the valve

swollen area of weakened arterial wall; may be life threatening if it bursts, due to tissue damage and  lack of oxygen

hardening of the arteries due to plaque build up on the inner arterial wall; arteriosclerosis involves a coronary artery; atherosclerosis involves any artery

which arterial vessels have most control over BP