Blood Vessels Flashcards
Functions of Blood Vessels?
R-egulate BP E-xchange nutrients, waste products, gases in the tissues D-irect blood flow to tissues C-arry Blood T-ransport Substance
carry blood away from the heart
thick w/ a lot of elastic
Arteries
carry blood towards the heart
thin with less elastic
Veins
Exchange occurs between blood and tissue fluids
Capillaries
Blood Flow Step by Step
Arteries -> Arterioles -> Capillaries -. Venules -> small veins -> Veins -> HEART
Inner most layer of the BV?
Tunica Intima (simple squamous)
Middle Layer of BV?
Tunica Media (smooth muscles with elastic and collagen)
outermost layer of BV?
Tunica Adventitia (connective Tissue)
2 types of arteries
Elastic Arteries
Muscular Arteries
artery that is:
largest in diameter
Thickest walls
Elastic Arteries (aorta,pulmonary trunk)
arteries that is:
medium to small size
thick in diameter
with smooth muscle cells
CAN CONTROL BLOOD FLOW TO BODY REGIONS
Muscular Arteries
BV that regulates the blow flow to different regions of the body?
Muscular Arteries
BV that prevents blood pressure from falling rapidly
Elastic Arteries (recoils when stretch)
Artery -> Arterioles ->_______ -> Venules -> Small Veins -> Veins -> Heart
Capilliaries- branches of small network like structure
smooth muscle that regulates the flow of blood through capillaries
Precapilliary Sphinchers
Capillaries is made up of?
Simple Endothelium surrounded by delicate loose connective Tissue
T or F
6 tunics are present in the small veins
False
3 tunics lang Dzai
contains the valves
Large Veins
collect blood from small veins and deliver to large veins
Medium Sized Veins
predominat layer of Large Veins?
Tunica Adventitia
exit lungs and carry oxygen-rich blood to the left atrium
pulmonary veins
Blood Vessels that carry blood from RV to Lungs and Back to the LA of the Heart
Pulmonary Circulation
circulation carries blood from the LV to the tissues of the body and back to the RA
Systemic Circulation
Parts of The Aorta
Ascending (superiorly to LV)
Aortic Arch ( 3 major Arteries that carry blood to head and Upper Limb)
Descending ( extends through thorax -> abdomen -> pelvis
Thoracic ( thorax -> diaphgram)
Abdominal (to iliac arteries (arteries from lower limb)
Arteries of Head and Neck? 6
Branches of Aortic Arch
Brachiocephalic Artery
Left & Right Common Carotid Artery
Left & Right Subclavian Artery
2nd branch of Aortic Arch?
Left & Right Common Carotid Artery
1st Branches of aortic arch?
Brachiocephalic artery
3 branches of Aortic Arch?
brachiocephalic artery
left & right common carotid artery
left & Right subclavian artery
supplies blood to the right side of the head and neck?
Brachiocephalic Artery
&
Right Common Carotid Artery
Supplies blood from left side of head ad neck
Left common carotid artery
Supplies the blood to upper limbs?
Left & Right Subclavian artery
Arteries of Upper Limbs? (4)
Axillary
Brachial
Ulnar
Radial
artery in which where the pulse is taken
supply blood to forearm and hand
Radial Artery
continuation of axillary artery
where blood pressure measures is taken here
Brachial Artery
continuation of subclavian artery
blood supply deep in clavicle
axillary artery
artery near the elbow
Ulnar Artery
9 Abdominal Arteries
Celiac Trunk Superior Mesenteric Inferior Mesenteric\ Renal Hepatic Testicular Ovarian Inferior Phrenic Lumbar
supply blood to colon
Inferior mesenteric arteries
supply blood to small intestines and upper portion of colon
superior mesenteric artery
supply blood to stomach, pancreas, spleen, liver, upper doudenum
Celiac Trunk
Artery of Abdominal (9)
Celiac Trunk Artery Superior Mesenteric Artery Renal Artery Inferior Artery Hepatic Artery Ovary Artery Testes Artery Inferior Phrenic Artery Lumbar Artery
supply blood from leg and foot
Anterior and Posterior Leg
2 types of Veins
SVC
IVC
returns blood from head, neck,thorax, RIGHT upper limb
Superior VC
returns blood from abdomen, pelvis, lower limb
Inferior VC
drain blood from brain, face and neck
Internal Jugular vein
drain blood from head and neck (subclavian veins)
external jugular vein
Veins of Upper Limbs
Brachial
Cephalic
Median cubital
this veins forms brachiocephalic veins
subclavian veins
join to form superior vena cava
brachiocephalic veins
empty into axillary vein
brachial veins
empty into axillary vein and basilic vein
cephalic Veins
connects to cephalic vein & basilic vein
near elbow
media cubital veins
Veins of Upper Limbs
Brachial
Cephalic
Median cubital
Veins of thorax? 5
Left & Right Brachiocephalic Veins Azygos Veins Internal Thoracic Veins posterior intercostal veins Hemiazygos veins
drains blood of thorax into SVC
Left & Right Brachiocephalic
drains blood from thorax in SVC
L&R Brachiocephalic Veins & Azygos Veins
empty into brachiocephalic Veins
Internal Thoracic Vein
receive blood from azygos vein on left side
hemiazygos vein
drain blood from posterior thoracic
drain azygos vein on right SIDE
Posterior Intercostal veins
Veins in Abdomen and Pelvis? 3
Common Illiac vein
External illiac vein
Internal
drains blood from lower limbs
empty in common iliac vein
external into common iliac =vein
drains blood from pelvis and abdominal
Internal Iliac Vein
Liver is a major processing center for substances absorbed by intestinal tract
HEPATIC PORTAL SYSTEM
vascular system that begins with cappilaries in viscera and ends with capillaries in liver
uses splenic vein and supperior mesenteric
portal system
Veins of Lower Limbs?(3)
Femoral
Great Saphenous
Popliteal
drain blood from the thigh and empty into the external iliac
Femoral vein
measure of force blood exerts agains BVW
BP
normal blood pressure?
120/80mmHg
normal blood pressure?
120/80mmHg
sounds produce in blood pressure?
Korotkoff sounds
difference between systolic and diastolic BP
Pulse Pressure
where can you felt the pulse pressure points?
near Large Arteries
Body Locations to Evaluate Pulses
Superficial Temporal Artery Facial Artery Carotid Artery Axillary Artery Brachial Artery Radial Artery Femoral Artery Popliteal Artery Dorsalis Pedis Artery Posterior Tibial Artery
T or F
Most exchange across capillary wall’s occurs by ACTIVE TRANSPORT
False
Most exchange occurs by DIFFUSION
T or F
Blood Pressure, capillary permeability and osmosis affect movement of fluids across capillary walls
True
Blood -> ____?
Tissue
T or F
Fluid gain in tissues is removed by lymphatic system
True
At the ________end,
movement of FLUID OUT OF CAPILLARY is GREATER than Movement INSIDE due to OSMOSIS is?
Arterial end
at the __________ end,
movement INTO CAPILLARY IS GREAT THAN movement of FLUID OUT
Venous end
how many fluids leaves the capillary?
nine-tenths (capillary)
one-tenth (Lymphatic)
Local control is achieved by relaxation and contraction of ?
Precapillary Sphincters
T or F
Spinchers Relaxes = Bloow flow increases
True
what controls the precapillary sphincters?
metabolism needs of tissues
T or F
Blood Pressure INCREASE when OXYGEN INCREASE
False
kasiiii
BLOOD PRESSURE INCREASE WHEN OXYGEN level decreases
T or F
Sphincter are relaxed if the concentrated CO2 increase and pH decrease
True
2 nervous control of Blood Flow
Vasomotor Center (symphathethic) (controls blood vessel diameter) Vasomotor Tone (partial constricction of BV) -increase vasomotor tune would cause BV to constrict and blood pressure to go up
adequate blood pressure is required to maintain blood flow through BV
Mean Arterial Pressure -calculated average of arterial pressure in various vessels in our body
Formula or MAP?
MAP= [SBP+ 2(DBP) /3]
it is equal to heart rate (HR) X the stroke Volume (SV)
Cardiac Output
Resistance to blood flow in all blood vessels
Peripheral Resistance
T or F
MAP changes in response to changes in HR, SV, or PR
True
Value of MAP at birth
70mmHG
MAP at age of adolescence to middle age
95mmHg
MAP of Old Age ?
110 mmHg
what does adrenal medulla secretes in the blood?
epinephrine and norephinephrine
vasoconstriction and Vasodilation
Adrenal Medullary Mechanism