Using fig. 21-4 be able to explain the organization of a capillary bed.
Note red is blood coming from arteries. BLUE IS BLOOD COMING FROM VEINS
Solid arrows indicate consistence blood flow, dash arrow indicate variable opposing blood flow
Start from left. Collateral = more than one artery
Collateral artery is connecting to the MET Arteriols, or the Met arteries leading into the capillaries
The capillaries take blood from to the small venules
The venules take blood flow to the Venule
Venule to the veins
What causes Aneurysms
is a bulging, weak area in the wall of an artery
Exceed the capacity of the elastic components of Tunica
Two things that you learned in this class that makes Capillaries unique
From arteries and veins.- Capillaries do not have Tunica Media, nor Tunica External
2. Capillaries are the only blood vessels whose walls permit exchange
Names of two major types of Capillaries
- CONTINUOUS CAPILLARIES
2. FENESTRATED CAPILLARIES
MUSCULAR ARTERIES ARE ALSO KNOW AS
PROVIDE EXAMPLES
DISTRIBUTION CAPILLARIES THE LUMEN DIAMETER 0.4 CM OR 0.16 inches Medium size
Examples: External carotid arteries of the neck
Brachial artery of the arm
Mesenteric arteries of the abdomen
Another name for Distribution arteries?
Muscular arteries
TWO MAJOR FORMS OF ARTERIOSCLEROSIS ARE?
1, FOCAL CALCIFICATION: DEPOSITION OF CALCIUM SALTS
2. ATHEROSCLEROSIS: FATYY DEGENERATION
THE DIFFERENCE BETWEEN VASOCONSTRICTION AND VASODILATION?
VASOCONSTRICTION: SOMETHING IS WRONG WITH THE BLOOD
VASODILATION: OPEN UP VESSEL INCREASE IN DIAMETER OF ARTERIOLES DUE TO
RELAXATION.THE THREE DISTINCT LAYERS OF YOUR ARTERY WALL AND VEINS?
- TUNICA INTIMA (INSIDE)
2. TUNICA MEDIA (MIDDLE)
3. TUNICA EXTERNAL ( NEAREST TO OUTSIDE)
IF ALL THE CAPILLARIES IN MY BODY WERE PLACED END TO END.
KNOW THEIR COMBINED LENGTH IN MILES.
MORE THAN 25,000.00 MILES
THE FIVE GENERAL CLASSES OF BLOOD VESSELS ARE?
- ARTERIES
2. ARTERIOLES
3. CAPILLARIES
4. VENULES
5. VEINS
THE MEANING OF THE TERMS: ARTERIAL ANASTOMOSIS
AND ANGIOGENESIS
ARTERIAL ANASTOMOSIS : THE JOINING OF BLOOD VESSELS
ANGIOGENESIS: THE FORMATION OF NEW BLOOD VESSELS
THE DIFFERENCE BETWEEN SYSTOLIC PRESSURE /DIASTOLIC PRESSURE
AND HYPERTENSION/ HYPOTENSION.
- SYSTOLIC PRESSURE: THE PEAK OF BLOOD PRESSURE DURING VENTRICULAR SYSTOLE
- DIASTOLE PRESSURE: THE MINIMUM BLOOD PRESSURE AT THE END OF VENTRICULAR
DIASTOLE - HYPERTENSION: ABNORMALLY HIGH BLOOD PRESSURE
- HYPOTENSION: ABNORMALLY LOW BLOOD PRESSURE
THE NAMES OF TWO LOCAL VASODILATORS
A. LACTID ACID
B. NITRIC OXIDE (NO)
C. ELEVATED LOCAL TEMPERATURE
D. DECREASE TISSUE OXYGEN LEVELS OR INCREASE CO2 levels
