CROSS-SECTIONAL VIEWS OF AN ARTERY AND OF A VEIN ARE SHOWN HERE. IDENTIFY EACH; ON THE LINES TO THE SIDES, NOTE THE STRUCTURAL DETAILS THAT ENABLED YOU TO MAKE THESE IDENTIFICATIONS:
STRUCTURAL DETAILS:
ARTERY: ROUND AND THICK
VEIN: THIN AND SQUIGGLY
CHARACTERISTICS OF TUNICA INTIMA
INNERMOST TUNIC, THIN TUNIC OF CAPILLARIES
CHARACTERISTICS OF TUNICA MEDIA
ESPECIALLY THICK IN ELASTIC ARTERIES, CONTAINS SMOOTH MUSCLE AND ELASTIN
CHARACTERISTICS OF TUNICA EXTERNA
MOST SUPERFICIAL TUNIC, HAS A SMOOTH SURFACE TO DECREASE RESISTANCE TO BLOOD FLOW
WHY ARE VALVES PRESENT IN VEINS BUT NOT IN ARTERIES?
Veins need valves to create pressure to pump the blood to the heart. Blood flows away from the heart and, therefore, the pressure is not required. Helps against gravity.
NAME TWO EVENTS OCCURING WITHIN THE BODY THAT AID IN VENOUS RETURN.
1. Respiratory "Pump". Pressure changes that occur in the thorax during breathing.
2. Muscular "Pump". Contraction and Relaxation of skeletal muscles surrounding the veins
WHY ARE THE WALLS OF ARTERIES PROPERTIONATELY THICKER THAN THOSE OF THE CORRESPONDING VEINS?
Because the blood is pumped directly into arteries so there is more pressure on the arteries
THE ARTERIAL SYSTEM HAS ONE OF THESE; THE VENOUS SYSTEM HAS TWO
BRACHIOCEPHALIC
THESE ARTERIES SUPPLY THE MYOCARDIUM
CORONARY
TWO PAIRED ARTERIES SERVING THE BRAIN
EXTERNAL CAROTID, INTERNAL CAROTID
LONGEST VEIN IN THE LOWER LIMB
GREAT SAPHENOUS
ARTERY ON THE DORSUM OF THE FOOT CHECKED AFTER LEG SURGERY
DORSALIS PEDIS
SERVES THE POSTERIOR THIGH
FEMORAL
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SUPPLIES THE DIAPHRAGM
PHRENIC
FORMED BY THE UNION OF THE RADIAL AND ULNAR VEINS
BRACHIAL
TWO SUPERFICIAL VEINS OF THE ARM
BASILIC, CEPHALIC
ARTERY SERVING THE KIDNEY
RENAL
VEINS DRAINING THE LIVER
HEPATIC
ARTERY THAT SUPPLIES THE DISTAL HALF OF THE LARGE INTESTINE
INFERIOR MESENTERIC
DRAINS THE PELVIC ORGANS
INTERNAL ILIAC
WHAT THE EXTERNAL ILIAC ARTERY BECOMES ON ENTRY INTO THE THIGH
DEEP ARTERY OF THE THIGH, FEMORAL
MAJOR ARTERY SERVING THE ARM
SUBCLAVIAN
SUPPLIES MOST OF THE SMALL INTESTINE
SUPERIOR MESENTERIC
JOIN TO FORM THE INFERIOR VENA CAVA
COMMON ILIAC
AN ARTERIAL TRUNK THAT HAS THREE MAJOR BRANCHES, WHICH RUN TO THE LIVER, SPLEEN, AND STOMACH
CELIAC TRUNK
MAJOR ARTERY SERVING THE TISSUES EXTERNAL TO THE SKULL
COMMON CAROTID
THREE VEINS SERVING THE LEG
ANTERIOR TIBIAL, FIBULAR, POSTERIOR TIBIAL
ARTERY GENERALLY USED TO TAKE THE PULSE AT THE WRIST
RADIAL
WHAT IS THE FUNCTION OF THE CEREBRAL ARTERIAL CIRCLE (CIRCLE OF WILLIS)?
PROVIDES ALTERNATE PATHWAYS FOR BLOOD TO REACH BRAIN TISSUE IN THE CASE OF IMPAIRED BLOOD FLOW IN THIS SYSTEM.
THE ANTERIOR AND MIDDLE CEREBRAL ARTERIES ARISE FROM THE __1__ ARTERY. THEY SERVE THE __2__ OF THE BRAIN.
1. INTERNAL CAROTID
2 CEREBRUM
TRACE THE PATHWAY OF A DROP OF BLOOD FROM THE AORTA TO THE LEFT OCCIPITAL LOBE OF THE BRAIN, NOTING ALL STRUCTURES THROUGH WHICH IT FLOWS?
subclavian artery, vertebral artery, basilar artery, posterior cerebral artery
LABEL ARTERIES
LABEL ARTERIES
LABEL ARTERIES
LABEL ARTERIES
LABEL ARTERIES
LABEL ARTERIES
LABEL ARTERIES
LABEL ARTERIES
TRACE THE PATHWAY OF A CARBON DIOXIDE GAS MOLECULE IN THE BLOOD FROM THE INFERIOR VENA CAVA UNTIL IT LEAVES THE BLOODSTREAM. NAME ALL STRUCTURES (VESSELS, HEART CHAMBERS, AND OTHERS) PASSED THROUGH EN ROUTE.
RIGHT ATRIUM -> RIGHT VENTRICLE -> PULMONARY TRUNK -> RIGHT OR LEFT PULMONARY ARTERY -> LOBAR ARTERY -> PULMONARY CAPILLARY BEDS IN LUNGS -> AIR SACS OF LUNGS.