peripheral vascular and lymphatic systems Flashcards
what are the walls of arteries like?
strong, touch and tense in order to handle the high pressure of the arterial system
//contain elastic fibers and muscle fibers
what is the role of the elastic fibres of the arterial walls?
stretching with systole and recoil with diastole
what is the role of the muscle fibres in the arterial walls?
//controlling the amount of blood delivered to the tissue //the muscle fibers are vascular smooth muscle
what action does the pressure wave caused by each heartbeat cause in the arteries
expansion and then recoil
//recoil propels blood through like a wave.
do all arteries have a pressure wave?
yes! its the pulse :D
what is a pulse?
an arterial pressure wave
what arteries are palpable?
temporal carotid brachial ulnar radial femoral popliteal dorsalis pedis posterior tibial
where is the temporal pulse palpated?
in front of the ear
where is the carotid pulse palpated?
in groove between sternomastoid muscle and trachea
where is the brachial pulse palpated?
runs in bicep-tricep furrow, palpable at antecubital fossa in the elbow, medial to the biceps tendon
where is the ulnar pulse palpated?
medial to ulna at wrist, deeper than radial
where is the radial pulse palpated?
medial to radius at wrist
where is the femoral pulse palpated?
near inguinal ligiment in groin
where is the popliteal pulse palpated?
posteriorly at base of thigh, behind knee
where is dorsalis pedis pulse palpated?
on top of the foot between first and second metatarsle
where is the posterior tibilal pulse palpated?
on posterior of ankle, inside of foot/leg
what is ischemia?
a deficiency in supply of oxygenated arterial blood to a tissue, cased by the death of distal tissue
a partial blockage may cause supply to be insufficient only during exercies, when ischemia may become apparent
what are veins?
lie parallel to artieris, but the boy has MORE VEINS than arteries
what do jugular veins do?
//empty unoxygenated blood directly into superior vena cava
//there is no valve between the right atrium and superior vena cava and so the jugular vein can give information about activity on the right side of the heart
//filling pressure and volume changes can be noted in jugular
which jugular vein is larger?
the internal jugular vein which lies deep and medial to the sternomastoid muscle
usually not visible but its diffuse pulsations may be seen in the sternal notch when the person is supine
which jugular vein is more superficial
both are vein, but…
EXTERNAL JUGULAR
