Blood vessels Flashcards
General Layers of an artery and vein
Tunica interna
tunica media
tunica externa
Layers of the artery
Inside->outside
Lumen is where blood flows
Tunica interna:
1. endothelium
2. basement membrane
3. internal elastic lamina
Tunica Media:
1. smooth muscle
2. external elastic lamina
Tunica externa
Layers of the vein
Internal->external
Lumen in the middle w/valve
Tunica interna:
1. endothelium
2. basement membrane
Tunica media:
smooth muscle
Tunica externa:
Layers of capillaries
Lumen
endothelium
basement membrane
how do lumens of veins and arteries differ
Artery lumen is round
Vein lumen isn’t as round like a long rubber band on a surface
how are the arteries and vein joined?
the tunica externa becomes capillaries that join both sides together
Does an artery or vein have a valve and where
Vein has a valve in the endothelium
does an artery or vein have internal elastic lamina and where
Arteries do, in the tunica interna
Does an artery or vein have and external elastic lamina and where
Arteries, last layer of the tunica media
arteriole layers
Lumen
endothelium
basement membrane
smooth muscle cells
capillary layers
lumen
endothelial cells
What blood system is called the blood reservoir
Systemic veins and venules
64% of blood
Input to the CV center for blood monitoring
all go to the CV (cardiovascular center of the brain)
Brain centers: cerebral cortex, limbic system, hypothalamus
proprioceptors: monitor joint movements
from baroreceptors: monitor blood pressure
chemoreceptors: monitors blood acidity H+, CO2, O2
CV center output
Vagus nerves (parasympathetic): heart decrease rate
Cardiac accelerator nerves (sympathetic): heart: increase rate and contractility
Vasomotor nerves (sympathetic): blood vessels: vasoconstriction
what is the right upper body side artery off of the aortic arch called
Brachiocephalic trunk
where does the left common carotid branch from
aortic arch
do the L and R common carotid arteries branch from similar arteries?
No: L off the aortic arch
R off of the right subclavian
Main Arteries of the arm->digits
subclavian
Axillary
(small artery) humeral circumflex
deep brachial
brachial
ulnar collateral
radial+ulnar
Anterior crural interosseous artery is between radial and ulnar deep
Palmar
Digit capillary
what arteries branch from brachiocephalic trunk
Right common carotid, right subclavian
where is the celiac trunk artery
under the stomach above the pancreas, right of the spleen: feeds hepatic, splenic, gastric arteries
What does the superior mesenteric artery feed
The large ascending colon and part of the small intestines through the: Middle colic, right colic, ileocolic, jejunals, ileals,
what does inferior mesenteric artery feed?
descending colon and rectum through: left colic, sigmoids, superior rectal
aorta ->leg
Aortic arch-> thoracic aorta->abdominal Aorta->R common iliac, Right external iliac (internal iliac goes to the butt), Right femoral, r popliteal, r anterior tibial, r fibular
which brachiocephalic has a L and R
Vein
how does blood from abdominal organs get to the heart
Splenic vein: Tributaries from stomach pancreas and large intestine
Superior mesenteric vein: tributaries from small intestine, some large intestine, stomach and pancreas
BOTH go to:
Hepatic portal vein->
Liver->
Hepatic veins->
inferior vena cava
where does blood flow after right coronary artery
posterior interventricular branch
Marginal branch
where does blood flow after the L coronary artery
Anterior interventricular branch
Circumflex branch
Upper right side including head
