Lesson 5 - Blood Vessels Flashcards
blood flows from the… (7)
heart -> arteries -> arterioles -> capillaries -> venules -> veins -> heart
how thick are capillaries?
one cell thick
capillaries are the site of…(3)
gas, nutrient, and waste exchange with tissues
artery walls are generally……than veins? (2)
thicker and more elastic
veins generally…..than arteries? (2)
have larger lumen than arteries and have valves to prevent backflow
three layers of a blood vessels
- tunica intima
- tunica media
- tunica externa
tunica intima
single thin layer of endothelium (squamous cells) lining the lumen
the _____ _____ is continuous with the heart endocardium
tunica intima
_____ are solely composed of the heart endothelium
capillaries
tunica media
and..?
middle coat of smooth muscle and elastin
tunica media is under control of what portion of the nervous system?
sympathetic control; regulates diameter
tunica externa
outermost layer of areolar or fibrous connective tissue for support and protection
aorta (3)
where is it’s range?
(1) ascending from the left ventricle of the heart, (2) into the aortic arch, and (3) down into the thoracic cavity as the descending aorta
the ascending aorta branches into the… (2)
right and left coronary arteries
what do the R/L coronary arteries supply?
the myocardium
the aortic arch branches into… (3)
from left to right (looking at the front)
- brachiocephalic trunk
- left common carotid artery
- left subclavian artery
the R/L common carotid arteries branch into… (2)
- left and right internal carotid arteries
- left and right external carotid arteries
where do the R/L internal carotid artery serve?
brain
where do the R/L internal carotid arteries branch?
into the right and left ophthalmic arteries
where do the ophthalmic arteries serve?
the orbits
where do the R/L external carotid arteries serve?
head and neck
what do the R/L external carotid arteries branch into? (4)
right and left
- superficial temporal
- maxillary
- facial
- occipital
arteries
the R/L subclavian arteries branch into… (3)
v.t.c.
right and left
- vertebral
- thyrocervical trunk
- costocervical trunk
arteries
where do the R/L vertebral arteries serve? (3)
- cerebellum
- brain stem
- posterior cerebral hemispheres
where do the R/L thyrocervical trunk serve? (2)
tg.sm.
- thyroid gland
- scapular muscles
where do the R/L costocervical trunk serve? (2)
- deep neck
- upper intercostal muscles
what do the R/L costocervical trunk branch into?
upi
right and left upper posterior intercostal arteries
the R/L subclavian arteries become what?
the right and left axillary arteries
where do the R/L axillary arteries serve?
the upper limb
what do the R/L axillary arteries branch into? (5)
t.lt.s.ach.pch.
right and left
- thoracoacromial
- lateral thoracic
- subscapular
- anterior circumflex humeral
- posterior circumflex humeral
arteries
where do the R/L thoracoacromial arteries serve? (2)
- shoulder
- pectoral region
where do the R/L lateral thoracic arteries serve?
lateral chest wall
where do the R/L subscapular arteries serve? (2)
- scapula
- dorsal thorax
where do the R/L anterior/posterior circumflex humeral arteries serve? (2)
- shoulder
- deltoid
the axillary artery becomes what?
the brachial artery as it enter the arm
the R/L brachial arteries branch into.. (2)
right and left
- radial
- ulnar
arteries
where do the R/L ulnar/radial arteries serve?
forearm
what precise location does the brachial artery split into the radial and ulnar arteries?
the elbow
the R/L internal thoracic arteries branch into…
the R/L anterior intercostal arteries
where to the R/L anterior intercostal arteries serve? (2)
- mammary glands
- most of the thorax wall
the R/L costocervical trunk branch into…
the first two pairs of posterior intercostal arteries
where do the R/L posterior arteries serve?
intercostal space
between what vertebrae is the thoracic aorta found?
T5-T12
where does the abdominal aorta begin?
T12 or the diaphragm
the abdominal aorta: visceral branches (5)
two categories: ones with R/L (3) and those without (2)
ms.r.g. s/im.c.
R/L
- middle suprarenal
- renal
- gonadal
and the (no R/L)
- superior/inferior mesenterics
- celiac trunk
arteries
the abdominal aorta: parietal branches (3)
ip.l. ms.
R/L (2) no R/L (1)
R/L
- inferior phrenics
- lumbars
and the (no R/L)
- median sacral
arteries
the celiac trunk branches into the…(3)
- left gastric artery
- splenic artery
- common hepatic artery
where does the left gastric artery serve?
the stomach
where does the splenic artery serve?
the spleen
what does the common hepatic artery branch into? (2)
rg.g.
- right gastric artery
- gastroduodenal artery
where does the right gastric artery serve?
the stomach
where does the gastroduodenal artery serve?
the stomach
the common hepatic artery becomes…
the hepatic artery proper
where does the hepatic artery proper serve?
the liver
what specific location does the common hepatic artery become the hepatic artery proper?
the junction of the gastroduodenal artery
where does the superior mesenteric artery serve?
the small intestine
where do the R/L middle suprarenal arteries serve?
adrenal glands on the kidneys
where do the R/L renal arteries serve?
the kidneys
where do the R/L gonadal arteries serve?
the gonads; ovaries or testes
where does the inferior mesenteric artery serve?
lower large intestine
where do the R/L lumbar arteries serve?
lumbar region
what does the abdominal aorta divide into? (2)
R/L common iliac arteries
where to the R/L common iliac arteries serve? (3)
- pelvis
- lower abdominal wall
- lower limbs
the R/L common iliac arteries divide into… (2)
R/L
- internal iliac
- external iliac
arteries
the R/L internal iliac arteries branch into…(3)
s/ig.o.
R/L
- superior gluteal
- inferior gluteal
- and obturator
arteries
where do the R/L superior/inferior gluteal arteries serve?
gluteal muscles
where do the R/L obturator arteries serve? (3)
mt.eg.p.
- medial thigh
- external genitals
- perineum
the R/L external iliac arteries serve?
the anterior abdominal wall
the R/L external iliac becomes what other artery?
the femoral artery
where does the R/L external iliac arteries become the R/L femoral arteries?
the thigh
the R/L femoral arteries become what other artery?
the popliteal artery
what precise location does the femoral artery become the popliteal artery?
the knee
what does the R/L popliteal artery branch into? (2)
R/L
- anterior tibial
- posterior tibial
arteries
what do the R/L posterior tibial branch into?
the R/L fibular arteries
veins run _____ to most arteries
parallel
veins converge on the _____ _____
vena cavae
superior vena cava serves…
serves veins from the upper extremities and the head
the superior vena cava branches into (2)
- left brachiocephalic vein
- right brachiocephalic vein
where do the R/L brachiocephalic veins serve?
upper extremities
what do the R/L brachiocephalic veins branch into? (2)
ij.v.
R/L
- internal jugular
- vertebral
veins
the R/L internal jugular veins branch into… (3)
R/L
- superficial temporal
- facial
- subclavian
veins