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Vascular Anatomy > Quiz 1 upper & lower arterial > Flashcards

Quiz 1 upper & lower arterial Flashcards

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1
Q

Circulatory system

A

transportation and distribution of essential substances to tissues and removal of by-products of metabolism

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2
Q

T or F:

veins and arteries at the foot are located distally?

A

True.

It is suppose to relate to the trunk (heart).

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3
Q

Pulmonary circulation

A

Right ventricle propels blood to the

lungs for O2 and CO2 exchange. Carries deoxygenated blood from RV to alveoli in lungs Returns oxygenated blood to LA

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4
Q

Systemic circulation

A

Left ventricle propels blood to all other tissues of the body. Arteries and arterioles carry oxygenated blood from LV to systemic capillaries Veins and venules return deoxygenated blood to RA. All systemic arteries branch from the aorta. Bronchial arteries are also part of systemic
All veins drain into SVC, IVC or coronary sinus

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5
Q

Flow of Blood through the heart

A

SVC/IVC -> Right Atrium -> Tricuspid Valve -> Right Ventricle -> Pulmonary Artery (to the lungs) -> Pulmonary Veins (4) –> Left Atrium -> Mitral Valve -> Left Ventricle -> Aorta (rest of body)

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6
Q

Pulmonary Trunk

Pulmonary Circulation

A

Emerges from RV (anterior heart). Passes superiorly, posteriorly and to left
Divides into 2 branches: Rt. and Lt. pulmonary a.
**After birth, PA only arteries to carry deoxygenated blood

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7
Q

Pulmonary veins (n=4)

A

Exit lungs
Carry oxygenated blood to LA
**After birth, PV only veins to carry oxygenated blood

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8
Q

Intima (tunica intima)

A

Innermost layer Thin lining of endothelial and elastic fibers
**Most susceptible layer to damage due to direct contact with blood flow (trauma)
Present in all vessels

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9
Q

Media (tunica media)

A

Middle layer Smooth muscle cells and elastic fibers
Responsible for round shape of arteries
Assists in passively contracting with diastole to propel blood toward heart (

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10
Q

Adventitia (tunica externa or adventitia)

A

Outermost layer

Longitudinal collagen fibers (fibrous tissue) ! Also contains nerves and vasa vasorum

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11
Q

Vasa Vasorum

A

Blood supply to the blood vessel itself is from the
vasa vasorum and intima. These are vessels that feed the vessel.Vasa vasorum can only reach so far into vessel. Rest of blood supply to vessel comes from intma. Therefore, any intimal damage decreases blood flow getting to the vessel itself

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12
Q

Arteries

A

Medium sized arteries Relatively thick walls
Large amount of smooth muscle
Distribute blood to various parts of body
Ex: brachial artery, radial artery

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13
Q

Arterioles

A

Delivers blood to capillaries

  • *Key role in regulating blood flow from arteries to capillaries
  • *Change in diameter significantly affects BP. Known as resistance vessels
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14
Q

Vasoconstriction

A

Contraction of arteriolar smooth muscle Increases resistance

Decreases blood flow to capillaries

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15
Q

Vasodilation

A

Relaxation of arteriolar smooth muscle Decreases resistance

Increases blood flow to capillaries

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16
Q

Capillaries

A

Many capillaries arise from each arteriole Connects arterioles to venules (Called microcirculation) Blood flow velocity becomes quite slow in the capillaries
Consist of short tubes with walls one cell thick Thin walls and slow blood flow (Steady Flow). Ideal conditions for exchange of substances between blood and tissues.

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17
Q

Capillary Function

A

Even though the smallest, capillaries are the most important vessel functionally
Prime function Transport essential materials to 

and from cells. Since this occurs at the capillary,
these structures are functionally important

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18
Q

Blood Volume - Systemic

A 
Systemic - 83%
Greatest in veins and venules – 67%
Capillaries – 5%
Aorta, arteries and
arterioles – 11%
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19
Q

Blood Volume - Pulmonary

A

Pulmonary - 17%

Equally divided among arterial, capillary and venous channels

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20
Q

Venules

A

Several capillaries unite

Collect blood from capillaries and drain into veins

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21
Q

Veins

A

Distensible to adapt to variations in blood volume and pressure
Cannot stand high pressure Lumen is larger than corresponding artery Collapse under extrinsic pressure

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22
Q

Venous Sinus

A

Vein with thin endothelial wall, no smooth muscle
Surrounding dense connective tissue replaces tunica media and externa. Examples:
Dural venous sinuses, Blood from brain to heart , Coronary sinus, Main vein of heart
Receives almost all venous blood from myocardium

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23
Q

Fetal Circulation:

Ductus Venosus

A

Bypasses fetal liver
Fetal umbilical vein to IVC shunt
Nothing to process
Becomes ligamentum venosum

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24
Q

Fetal Circulation:

Ductus Arteriosus

A

Bypasses fetal lungs
Connects PA to descending aorta
Becomes ligamentum arteriosum

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25
Indirect Testing
Looking at one part of the body to evaluate a different part of the body Ex: Pressure testing: sampling the PTA to evaluate the SFA
26
Direct Testing
The transducer is evaluating whatever is beneath it | Ex: Duplex imaging
27
Conventional Angiography
Oldest method Uses ionizing radiation and x-ray contrast Involves arterial stick into femoral artery Most invasive of the tests
28
Computed Tomography Angiography (CTA)
Uses x-ray contrast 
 and ionizing radiation
29
Magnetic Resonance Angiography (MRA)
Uses very strong magnetic field and RF signal Contraindications: Metallic implants (e.g.: aneurysm clips, pacemaker), h/o welding
30
What chamber pumps blood to the head & body?
Left Ventricle
31
What chamber receives blood from the pulmonary veins?
Left Atrium
32
Blood entering the right atrium is?
deoxygenated
33
Blood gets to the lungs via the
pulmonary arteries
34
how many pulmonary veins are there?
4
35
Abdominal Aorta
Supplies trunk & LE blood Potential source of LE symptoms Emboli thrombosis Slightly&to&left&of&midline& Bifurcates at 4th lumbar vertebra At region of umbilicus Divides into Lt. and Rt.common iliac arteries (CIA) Largest artery in body
36
Common Iliac Arteries
Originate from aortic BIF. Varies in length. Diameter 13-15 mm. Divides into Internal Iliac Artery (feeds pelvis). External Iliac Artery - supplies LE. becomes CFA.
37
Internal Iliac Arteries
AKA: hypogastric a. Primary arteries of pelvis. Begin at BIF of iliac arteries. Distributes to Pelvis, Buttocks, external glands.
38
External Iliac Arteries
Larger than internal iliac arteries. distributes to lower limbs. descend along medial border of psoas major muscles. becomes CFA at inguinal crease.
39
Common Femoral Artery
Level of inguinal ligament (canal). Divides into Profunda Femoris or DFA & Superficial femoral SFA. other branches hard to see due to lieing behind peritoneum & overlying bowel gas.
40
Profunda Femoris/ Deep Femoral Artery
runs posterolateral to the SFA. Supplies blood to thigh. Important collateral pathway (if SFA occluded). Gives off branches: Medial & Lateral circumflex artery. (descending branch collateral btw SFA & DFA)
41
Superficial Femoral Artery
Medial course down thigh. Becomes Popliteal artery at level of adductor canal- "Hunter's Canal" (above knee) Supreme genicular a./ descending genicular originates (pop beaches) are important collateral pathways in the event of obstruction
42
Popliteal Artery
runs posterior to knee- popliteal fossa. (alot of branches). Supplies-> knee joint & gastrocnemius & soleus muscles. BIF below knee: (1st) Anterior Tibial & Tibioperoneal Trunk.
43
Anterior Tibial Artery
Prox ATA runs anterolateral through interossseous membrane to anterolateral aspect of upper calf. Continues running to lower calf. Becomes dorsalis pedis over dorsum of foot.
44
Tibioperoneal (TP Trunk)
AKA: tibial-peroneal trunk. varies in length. BIF: Posterior tibial artery (PTA) & Peroneal artery.
45
Posterior Tibial Artery
follows medial course along calf. runs behind medial malleolus distally
46
Peroneal Artery
Lies deeper than PTA against border of fibula. runs toward later malleolus distally. often spared in presence of tibial artery disease. identification useful if distal bypass surgery considered.
47
Distal Foot
Supplied by dorsalis pedis artery (Branch of ATA) & the medial & lateral plantar arteries which are the terminal branches of the PTA. Dorsalis pedis & Plantar arteries join to form Plantar Arch (supplies arteries to toes)
48
Collateral Pathways
alternative pathways carry blood around diseased segment. reverse flow observed in major branches distal to area of disease, resupply blood flow to main vessels. hard to follow on US.
49
The aorta, once is passes through the diaphragm is called?
Abdominal Aorta
50
The EIA, once it passes through the inguinal canal, is called
Common Femoral Artery
51
what vessels form the plantar arch?
The dorsalis pedis & medial & lateral plantar arteries
52
The vessel that lies between the fibula and tibia is the
Anterior Tibial
53
The vessel that lies posterior to the medial malleolus is the
Posterior Tibial a.
54
The vessel that lies deep to the PTA is the
Peroneal a.
55
The vessel that is a branch of the ATA & lies along the dorsum of the foot is
Dorsalis Pedis (DPA)
56
Thoracic Aorta
Ascending, Arch, Descending Brachiocephalic Trunk (innominate) Left Common Carotid a. Left subclavian
57
Subclavian Arteries
Run between anterior & middle scalene muscles & passes between clavicle & first rib. Becomes Axillary artery. Distribution-> brain & spinal cord, neck, shoulder, thoracic viscera & wall, scapular mescles
58
Subclavian Arteries Branches:
Vertebral a.- 1st branch Thyrocervical trunk- superior SA branch, divides almost at once. Internal Thoracic (mammary a.)- jsut inferior to thyrocervical. freq used for coronary artery bypass surgery.
59
Thoracic Outlet
where subclavian artery, brachial plexus (nerve bundle) & subclavian vein exit the chest.
60
Axillary Artery
Subclavian artyer passes between clavicle & first rib to become axillary a. distribution -> shoulder, thoracic & scapular muscles, humerus. Becomes brachial artery as it crosses lower margin of tendon of teres Major muscle (top of arm)
61
Brachial Artery
Runs distally on medial side of arm between triceps & biceps muscles. runs medial to lateral over inner elbow then divides 1-2 cm below elbow to become radial & ulnar arteries. "Deep" artery, but palpable. Main blood supply of arm.
62
Deep Brachial Artery (branch)
divides from main trunk in upper arm. important collateral if brachial artery is occluded distally
63
The Brachial a. crosses the _______ fossa at the elbow.
antecubital fossa
64
Ulnar Artery
Larger branch of brachial artery. divides deep beneath flexor tendons in upper forearm. Runs along medial(ulnar) side of forearm. runs deep then comes superficial. branches supply Superficial Palmar Arch.(more of rigid curve) Common interosseous artery- collateral.
65
Radial Artery
Runs along lateral aspect of forearm through wrist & hand. Palp at wrist. Supplies Deep Palmar Arch.(gentle arch) begins opposite neck of radius, travels laterally to thumb.
66
Palmar Digital Arteries
Fingers are supplied by Palmar digital arteries. usually communicating arteries between the superficial & deep palmar arches. in some people, only one wrist artery will supply the palmar arch sms.

Vascular Anatomy (3 decks)

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