Vessels and Circulation (Ch 23) Flashcards
What are the arteries of the thorax/abdomen?
Right coronary artery Left coronary artery Pulmonary trunk and lungs Right and left pulmonary arteries Ascending aorta, aortic arch, descending aorta, abdominal aorta
What are the veins of the thorax/abdomen?
superior vena cava
inferior vena cava
brachiocephalic vein
What are the arteries of the head/neck?
3 Branches of the aortic arch: Brachiocephalic trunk Right common carotid* Right subclavian* Left subclavian* Left common carotid artery* * Right and left common carotids have 2 branches Internal carotid artery External carotid artery
What are the veins of the head/neck?
Internal jugular vein
external jugular vein
What are the arteries of the upper limb?
Right and left subclavian arteries (to arm) Axillary artery (was subclavian) Brachial artery (was axillary artery) Radial and ulnar arteries Superficial Palmar Arch
What are the veins of the upper limb?
Basilic vein
Median cubital vein
Cephalic vein
What are the arteries of the pelvis/lower limb?
Common iliac arteries Internal iliac arteries External iliac arteries External iliac becomes: femoral artery (in thigh) Deep femoral Anterior tibial artery Posterior tibial artery
What are the veins of the pelvis/lower limb?
Great saphenous vein
Small saphenous vein
What are veins?
vessels that carry blood to the heart
-for the most part, run parallel to arteries with same name
Superior Vena Cava
(major systemic vein) drains head/upper limbs
Inferior Vena Cava
(major systemic vein) drains abdomen, pelvis, lower limbs
What are the major systemic veins?
Superior and Inferior Vena Cava
- all other veins drain into these
- venous blood returns to right atrium
What veins feed into the superior vena cava?
- L Subclavian + L Internal Jugular = L Brachiocephalic vein –> Superior Vena Cava
- R Subclavian + L Internal Jugular = R Brachiocephalic vein –> Superior Vena Cava
What are the tributaries to the Internal Jugular Vein?
- Superficial Temporal Vein: drains scalp
2. Facial Vein: drains face
Internal Jugular Vein
main drainage for head/face
Azygos Vein
main drainage for thorax (including intercostal veins) –> drains into superior vena cava
What are the veins of the superficial arm?
- Cephalic Vein
- Basilic Vein
- Median Cubital Vein
Cephalic Vein
drains later part of upper limb –> joins axillary vein to form subclavian vein
-superficial to muscles/deep to skin
Basilic Vein
drains upper medial side of arm + joins brachial vein = axillary vein
Median Cubital Vein
connects cephalic and basilic veins
-in inner-elbow (draw blood here)
What are the veins of the pelvis/lower limb?
- Popliteal Vein
- Great Saphenous Vein
- Femoral Vein
- External Iliac Vein
- Internal Iliac Vein
- Common Iliac Vein
Popliteal Vein
posterior of knee
-becomes femoral at popliteal fossa
Great Saphenous Vein
runs superficially along medial side of thigh
-joins femoral vein superiorly (through fascia)
Femoral Vein
runs down femur
-joins external iliac vein on way to heart
External Iliac Vein
in pelvis –> common iliac
Internal Iliac Vein
feeds into upper pelvis (small) –> common iliac
Common Iliac Vein
made of external iliac + internal iliac
-drains into inferior vena cava
What are the veins of the foot/leg?
- Great Saphenous Vein
- -> all others match their arteries (popliteal, fibular, anterior/posterior tibial)
What are the major systemic arteries exiting the heart?
- Aorta
- aortic arch + branches (brachiocephalic trunk, L common corrupted artery, L subclavian artery)
What are the branches of the brachiocephalic trunk?
- R Subclavian artery
- R Common Carotid
- -> supply R head, neck, and upper limbs
Right Subclavian Artery
feeds upper R limb
Right Common Carotid Artery
blood supply to head/neck
Aorta
exits from L ventricle
-aortic arch + branches supply head, neck, and upper limbs with blood
Left Common Carotid Artery
superior through neck, supplies blood to head/neck
Left Subclavian Artery
laterally, supplies L upper limb
What are the three branches off the aorta?
- Brachiocephalic Trunk
- Left Subclavian Artery
- Left Common Carotid
What are the arteries of the head?
- Internal Carotid Artery
- External Carotid Artery
- facial artery
- maxillary artery
- superficial temporal artery
Internal Carotid Artery
supplies brain, eyes, and internal skull structures
External Carotid Artery
supplies structures external to skull
Facial Artery
supplies the facial region
Maxillary Artery
supplies teeth, nasal cavity, etc
Superficial Temporal Artery
continuation of the external carotid
-supplies is of head/parotid gland
What are the arteries of the upper limb?
branches of the Subclavian Artery feed upper limbs, chest, and shoulder muscles
- Axillary Artery
- Brachial Artery
- Deep Brachial
- Ulnar Artery
- Radial Artery
- Superficial Palmar Arch
- Deep Palmar Arch
Axillary Artery
formed from subclavian at axilla
-supplies blood to chest/back
Brachial Artery
formed from axillary artery at mid-bicep
-supplies blood to most of arm muscles
Deep Brachial Artery
branches off brachial artery
-supplies triceps
Ulnar Artery
formed from brachial artery
-supplies medial forearm
Radial Artery
formed from brachial artery
-supplies lateral forarm
Superficial Palmar Arch
formed from ulnar artery
-supplies superficial hand
Deep Palmar Arch
formed from radial artery
-supplies deep hand
What are the arteries of the pelvis and upper portion of lower limbs?
- R and L Common Iliac Arteries
- Internal Iliac Artery
- External Iliac Artery
- Femoral Artery
- Deep Femoral Artery
- Popliteal Artery
Common Iliac Arteries
formed from abdominal aorta at the lumbar vertebrae
-branches into internal and external iliac arteries
Internal Iliac Artery
branched off of common iliac artery
-supplies pelvic region
External Iliac Artery
branched off of common iliac artery
-turns into femoral artery –> supply lower limb
Femoral Artery
formed from external iliac artery at inguinal ligament, travels down femur
-supplies lower limb
Deep Femoral Artery
branches off femoral artery superiorly
-supplies thigh muscles
Popliteal Artery
continuation of femoral artery, posterior, contained in popliteal fossa
-supplies knee
What are the arteries of the leg?
- Popliteal Artery
- Anterior Tibial Artery
- Posterior Tibial Artery
- Fibular Artery
- Dorsalis pedis Artery
Anterior Tibial Artery
branch off of popliteal artery
-supplies anterior lower leg
Posterior Tibial Artery
branch off of popliteal artery
-supplies posterior lower leg
Fibular Artery
formed from posterior tibial artery
-supplies lateral region of lower leg
Dorsalis Pedis Artery
formed from anterior tibial artery, superficial to food
-supplies food (take pulse here)
Small Saphenous Vein
travels along the posterior calf, drains into the popliteal vein
What is the Pulmonary Circuit?
movement of blood from the heart to the lungs for oxygenation and back to the heart again
What is the Systemic Circuit?
movement of blood from the heart to the body to provide oxygen and nutrients, bringing deoxygenated blood back to the heart
What is the path of Coronary Circulation?
- Lungs
- Pulmonary Vein
- L Atrium –> mitral valve
- L Ventricle –> aortic semilunar valve
- Aorta –> BODY CIRCULATION
- Superior/Inferior Vena Cava (from body)
- R Atrium (tricuspid valve)
- R Ventricle (pulmonary semilunar valve)
- Pulmonary artery –> LUNGS
Coronary Arteries
emerge from aorta,
RIGHT: branches off into posterior interventricular artery
LEFT: branches off into anterior interventricular artery
-supply blood to the heart and deliver oxygen to heart muscles
Anterior Interventricular Artery
branches off L coronary artery, runs between L/R ventricles
- supplies anterior surface of ventricles
- also called Left Anterior Descending Artery (LAD)
Posterior Interventricular Artery
branches off R coronary artery
-supplies posterior side of ventricles
Coronary Veins
drain directly into R atrium via coronary sinus
1. Great Cardiac Vein
Great Cardiac Vein
runs alongside anterior interventricular artery (LAD)
Cardiac Sinus
large vein on posterior side of heart that drains directly into the right atrium
-great cardiac veins drains into here
Intercostal Arteries and Veins
supply/drain area around ribcage
-veins drain into azygos vein
Vertebral Artery
branch off of subclavian artery
What are the three layers of blood vessels?
- Tunica Intima
- Tunica Media
- Tunica Externa
Tunica Intima
simple squamous epithelium, very smooth
*deepest layer of blood vessel
Tunica Media
smooth muscle
*middle layer of blood vessel
Tunica Externa
connective tissue
*most superficial layer of blood vessel
Blood vessels
profuse the tissues
Arteries
- carry oxygen rich blood AWAY from the heart
- thicker walls (esp. tunica media)
- smaller lumen (hollow passageway)
- three types
What are the three types of arteries?
- Elastic- near heart, large
- Muscular- supply organs, middle sized
- Arterioles- connect to capillaries, smallest
Capillaries
- bring oxygen and nutrients to surrounding tissues, pick up gas/wastes
- good for diffusion
- smallest vessels –> RBCs travel single file
Veins
- carry de-oxygenated blood TO the heart
- thicker tunica externa
- larger lumen
- less elastic –> prone to collapse under pressure
- increase in size closer to the heart
Venous Return
returning of blood to the heart (usually against gravity)
- One-way valves- prevent back flow
- Muscular Pump- skeletal muscles squeeze veins during contraction
- Respiratory Pump- inhalation increases pressure on veins
Varicose Veins
veins no longer straight because valve become incompetent, blood pools
Anastomoses
network of interconnected arteries and veins (NOT capillaries) that provide alternate pathway for circulation
-found in joins and GI circulation