Lecture Flashcards
PASS
What are the 3 tunics of the blood vessels?
- Tunica Intima
- Tunica Media
- Tunica Externa
Elastic Arteries
AKA: Conducting Arteries
Largest Arteries-conduct blood from heart to muscular arteries.
EX: brachiocephalic,common carotid, subclavian
Muscular Arteries
AKA: Distributing Arteries
EX: Brachial artery, anterior tibial artery, coronary artery
Describe each Tunic
- Tunica Intima: Smooth surface, endothelium
- Tunica Media:Smooth muscle, vasocontriction, vasodilation.
- Tunica Externa: Anchors
What is the general function of capillaries?
Exchange between blood and tissue. ONLY place where exchange occurs.
Name the 3 types of capillaries found within the body.
Continuous, Fenestrated, Sinusoid
Describe and state the location of the capillaries in the body.
Continuous- found in most regions of the body, its a form of continuous lining.
Fenestrated- Contains pores in the endothelial lining. found where much fluid transport happens.
Sinusoid- Endothelial lining with large gaps. Found in the bone marrow, spleen, and some endocrine glands.
State whether each vessels are elastic or muscular arteries
a. Brachial artery- Muscular
b. Common carotid- Elastic
c. Coronary artery- muscular
d. Subclavian Artery- Elastic
e. Aorta- Elastic
f. Anterior tibial artery- muscular
g. Brachiocephalic artery- elastic
Increase in oxygen demand the precapillary sphincter will?
Dilate
Decrease in oxygen demand the precapillary sphincter will?
Constrict
What is the movement of blood through capillary bed?
Areriole-Metarteriole-Capillary Bed-Venule
What are varicose Veins?
loss of valve strength or weakening of walls of vein.
Blood pools
Hydrostatic Pressure
Force exerted by a fluid
Hydrostatic Pressure is the cause of?
Filtration
Colloid Osmotic Pressure
The pull on water due to the presence of protei soultes.
Colloid Osmotic Pressure
The pull on water due to the presence of protein solutes.
Colloid Osmotic Pressure is the cause of?
Rebsorption
Define Net Filtration
Difference between net hydrostic pressure and net colloid osmotic pressure
Edema
The increase in movement of fluid into tissues.
What is the cause of a edema?
Fluid build up
Blood Pressure
Force of blood against vessel wall
Systolic Pressure
Occurs when ventricles CONTRACT
Diastolic Pressure
Occurs when ventricle RELAX
Pulse Pressure
Pressure in arteries added by heart contraction
How do you calculate Pulse Pressure??
Systolic Pressure-Diastolic Pressure
How do you calculate MAP?
Pulse Pressure divided by 3 Plus Diastolic
