Blood Vessels pt 1

Systemic blood vessels transport blood from the _____ ventricle through the body to the ______ atrium

left; right

Which function does the circulatory system share with the heart?

Regulates blood pressure

the lining of the capillary is called the

endothelium

Name an organ that would be most likely to contain fenestrated capillaries

kidneys

Arteries can constrict or dilate as needed because of the smooth muscle found in the _________

tunica media

which vessel is strong and elastic?

arteries

Valves similar to the semilunar valves of the heart are found in medium and large

veins

may contain valves and are lined with endothelium

veins

tissue layers that make up the blood vessel walls

tunics

space within the blood vessel where blood flows

lumen

capillaries have only this tunic

tunica intima

this tunic has smooth muscle and affects blood pressure/rate of blood flow

tunica media

thickest tunic, extremely strong and elastic

tunica externa

most arteries we discuss are this type, like aorta, brachiocephalic, carotid, subclavian

elastic

elastic (conducting) arteries function as a

pressure buffer

pressure is high in these arteries that expand during systole and recoil during diastole

elastic (conducting)

axillary, brachial, radial, and intercostal are examples of

Muscular (Medium/Distributing) Arteries

three classifications of arteries are

elastic (conducting), muscular (medium/distributing), arterioles

which type of artery has thick walls with 25-40 layers of smooth muscle?

muscular (medium/distributing)

smooth muscle in _______ arteries allows vessels to partially regulate _______ _______ to different regions of the body

distributing blood supply

small, narrow branches of arteries that carry blood to capillaries

arterioles

pulmonary circulation starts at the ______ ventricle and ends at the _______ atrium

right; left (SLRPRL)

coronary circulation supplies the myocardium with ________ and _______

oxygen nutrients

coronary arteries deliver ___________ blood

oxygenated

coronary veins remove ___________ blood and waste

deoxygenated

order of blood flow

heart → elastic arteries → muscular arteries → arterioles → capillaries → venules → medium veins → large veins → heart (hema-c-vml)

pulmonary arteries carry _______ blood to the lungs

deoxygenatedco

coronary arteries supply ______ muscle

heart

arterioles control ________ ______ to tissues

blood flow

the aorta is an example of an ________ artery

elastic

an anastomosis is a connection between ______ providing an alternate route for _______ _____, such as the circle of willis

vessels; blood flow

capillary type known for tight junctions in skin and smooth muscle

continuous

capillary type that contains pores, in kidneys and intestines

fenestrated

capillary type with large openings, in liver, spleen, bone marrow

sinuosoidal

how many tunics do veins have and which is thinner?

3, tunica media thinner

a vein not returning directly to the heart is a

hepatic portal vein

site of exchange between blood and tissues

capillaries

hepatic portal system carries ________-rich blood from digestive organs to the _____

nutrient, liver

HP system drains stomach, intestines, spleen, pancreas, using __________ veins

capillary

some capillaries are designed as

barriers

blood enters capillary beds from an _______ and exits via a

arteriole, venule

blood flow into and through the capillary beds is regulated by

precapillary spincters