Lab exam 2 - vessels Flashcards
*look at blood vessel slide and label tunica externa, tunica media, tunica intima and lumen
do it now
why is it good that arteries have thickened vessel walls
it can withstand high pressure, control blood flow and maintain blood pressure
why is it good that veins have thin vessel walls
ensure blood only flows one way
does blood pressure increase or decrease in cold temp. why?
increases
cold temp causes blood vessels to narrow. More pressure is needed to push blood through the blood vessels
does your blood pressure increase or decrease after exercise, why
immediately after= high bp cause body has not been able to ‘rest’ from the exercise
decreases after 5/10 minutes after exercise=force on the blood vessels is decreased
risks of having high bp
stroke, heart attack, anurysm, blocked arteries, kidney problems
risk of low bp
fatigue, dizziness, dehydration, bradycardia, heart failure
what artery(s) are felt when taking HR on the neck and wrist
neck: corotid
wrist: radial
do you expect BP to be higher or lower when taking it on the tibial artery (ankle) as opposed to the brachial artery (arm)
tibial BP will be higher cause it is further from the heart=needs extra resistance to travel
Circulatory pathways: Aorta to right thigh
ascending aorta
aortic arch
decsending aorta
common iliac
external iliac
Circulatory pathways: left fingers to right atria
digital
palmar venus arches unlar/median vein antibrachial/radial viens
median cubidal
basilic
brachial
axillary
subclavian
brachiocephalic
superior vena cava
right atria
Circulatory pathway: Right jugular to left carotid
external/internal jugular vien
brachiocephalic vein
superior vena cava, right atrium right ventricle
pulmonary trunk
pulmonary artery
lungs
pulmonary veins
left atrium
left ventricle
ascending aorta
aortic arch
brachiocephalic trunk
left common carotid
name the superficial veins of the arm (6) and locate them on yourself
digital
palmar venous arches
median antebrachial vein
basilic vein
median cubital vein
cephalic vein
location of digital veins
drain the fingers and leads to the palmar arches of the hand
location of palmar venous arches
drain the hands and fingers and lead to the radial vein, unlar vein, and the median antebrachial vein
location of median antebrachial
vein that intertwines with the palmar venous arched and leads to basilic vein
location of basilic vein
arises from the median antebrachial vein, intersects with the median cubital vein and continues into the upper arm to the axillary vein
location of median cubital vein
located in antecubital region, a frequent site from which to draw blood
location of cephalic vein
superficial vessel in the upper arm, leads to axillary vein
whats an artery/vien pair that do not share a common name
carotid artery and jugular vein
whats an example of an artery that carries deoxygenated blood
pulmonary artery
Case study:
a) excessive bleeding, lower leg and foot are pale and cold, no tibial pulse. what arterial injury is this?
b) if the fracture was to the humerus instead what artery would be involved/symptoms would be expected
a) embolus- deep vein thrombosis
b) anterior humeral circumflex artery
Case study: post surgery there is a blood clot that blocks the mesentaric artery, what region would become ischemic
blocks small intestine
why is an emboli most commonly cause an ishemic event in extremities
they break free and travel
what medical condition results from blocked arteries
ischemic stroke
what medical condition results from the coronary arteries supplying the heart
heart attack- Athersclerosis
Pathway of blood thru vena cava
Both the superior vena cava and inferior vena cava empty blood into the right atrium. Blood flows through the tricuspid valve into the right ventricle. It then flows through the pulmonic valve into the pulmonary artery before being delivered to the lungs
Pathway of blood through the four pulmonary veins
pulmonary veins, left atrium, left ventricle, aorta, arteries, arteriorles, capillaries, venules, veins, vena cavae.
Orbicularis oris blood supply from heart vessels involved
The arterial blood supply of the orbicularis oris is mostly derived from the superior and inferior labial branches of facial artery, mental and infraorbital branches of maxillary artery and the transverse facial branch of superficial temporal artery.
Pathway of blood from heart to diagphragm
The blood supply to the diaphragm is from the superior phrenic, musculophrenic, inferior phrenic, pericardiacophrenic, and lower internal intercostal arteries. The superior phrenic arteries arise from the thoracic aorta
Pathway of blood to right bicep brachii
Brachiocephalic trunk
Right subclavian
Right axillary
Right brachial
The common carotid artery (3 types) function + where does it go hoe
common carotid artery divides into internal and external carotid arteries. The right common carotid artery arises from the brachiocephalic artery and the left common carotid artery arises directly from the aortic arch.
external carotid artery supplies blood to numerous structures within the face, lower jaw, neck, esophagus, and larynx. These branches include the lingual, facial, occipital, maxillary, and superficial temporal arteries.
internal carotid artery initially forms an expansion known as the carotid sinus, containing the carotid baroreceptors and chemoreceptors. Like their counterparts in the aortic sinuses, the information provided by these receptors is critical to maintaining cardiovascular homeostasis
