Unit 9- Blood Vessels Flashcards
Which arteries go to the intestine and branch into capillaries that can be identified as villi?
Mesenteric artery’s
Coronary arteries; Why doesn’t the heart not receive its nutrients from the blood that travels through it?
The muscle is too dense and thick and the blood is travelling through it too hard and fast
Mesenteric artery‘s branch off from the aorta as it travels _________. There is no corresponding _____________________
Travels posteriorly, no corresponding mesenteric vein
Renal Arteries and veins function
The arteries take blood away from the kidneys while the Renal veins take blood away from the kidneys and back to the posterior Vena cava
Jugular vein function
Conduct blood out of the head to the Superior Vena Cava
Why are the carotid artery‘s highly specialized?
They contain a number of different types of nerve endings that detect oxygen content and pressure receptors that detect blood pressure changes
Role of sphincter muscles
When triggered they can dilate or constrict to regulate blood pressure
Hepatic vein
Once the liver has done its thing to the blood the blood must return to the Venous system
What are the types of blood vessels?
Arteries
Veins
Capillaries
Function of the anterior Vena cava
Collects blood from the upper body
If all capillary beds are open at one time, how would it affect the blood pressure?
Decrease blood pressure
Function of carotid artery‘s
Maintains homeostasis
Function of the posterior vena cava
Collects blood from the lower body
Arterioles Leading into a particular organ or region are often equipped with
Sphincter muscles
The vein that does not contain valves
Jugular veins
Nerve endings are also called
Chemoreceptors
Jugular veins blood flow
Is through gravity
Subclavian artery’s and veins also branch from the __________. Travels under the ____________
Branch from the aorta. Travels under the clavicle
Capillaries have __________________ that can _________ and ___________ the vessel
Sphincter muscles, dialate, constrict
What blood vessel has thick muscular, elastic wall
Arteries
The match for the carotid artery
Jugular veins
Only artery in the body that carries deoxygenated blood
Pulmonary arteries
What is the pulmonary circuit comprised of?
The pulmonary trunk and arteries that deal strictly with the heart and the lungs
Veins function
Transports blood back to the heart
Features of arterioles and venules
All the same features as arteries but on a smaller scale
If all the capillary beds were closed, what would it do to the blood pressure?
Increase blood pressure
Efferent arteriole
The outgoing arteriole
The term afferent arteriole
The incoming arteriole
Carotid arteries
These branches of the aortic arch take the blood to the head including the brain
Location of arteries
Usually deep along bones
Mesenteric arteries function
Feeding the organs of the digestive system and picks up newly digested nutrients in the body
Aortic arch
The aorta leaves the left ventricle, loops over top of the heart creating this structure and descends along the inside of the backbone
Function of the coronary arteries and veins
Feeds the heart muscle
What is the anterior (superior) and posterior (inferior) vena cava?
Large vein that collects all the deoxygenated blood from the smaller veins to the heart (right atrium)
the largest vein of the body
Hepatic vein function
Carries blood from the liver to the posterior vena cava
Only vein in the body that carries oxygenated blood
Pulmonary veins
Iliac arteries and veins
When the dorsal aorta gets to the pelvic area it branches into two Iliac arteries, one goes down each leg
Coronary arteries and veins are
Relatively small blood vessels that can be seen on the surface of the heart
Function of both anterior and posterior Vena cava
Large vein that collects all the spent blood from the smaller veins to the heart
Location of capillaries
Everywhere; within a few cells of each other
Function of arteries
Transport blood away from the heart
Subclavian artery‘s and veins function
Branch to feed the arms (brachial artery) veins collect blood from the arms
The very first branches off the aorta
Coronary arteries
Functions of the capillaries
Interconnect arteries to veins
Iliac arteries and veins function
To supply the legs with oxygenated blood and return Deoxygenated blood to the posterior Vena cava
Femoral artery
Another branch off the Iliac arteries that feeds the upper leg
Which blood vessel contains a structure with very thin walls that are one cell thick
Capillaries
The renal arteries branch of the dorsal aorta as it passes through the….
Lumbar region of the body
Aorta function
Branches from this blood vessel feed the rest of the body
Major blood vessels carry oxygenated blood out of the heart
aorta
Veins structure
Thin walls; contain valves
What is the location of veins?
Often on the surface surrounded by skeletal muscles
Hepatic portal vein meaning
Hepatic means liver; portal indicates that there is a capillary bed on both end of it
Hepatic portal vein function
Brings blood from digestive tract to liver
