Term
| the tunics of the 3 blood vessels |
|
Definition
arteries: thick tunica media
Capallaries: only a tunica intima
veins: thin tunica media |
|
|
Term
|
Definition
| arteries, capallaries, and veins |
|
|
Term
| the three layers of blood vessels |
|
Definition
| endothelium, subendothelial layer, and internal elastic lamina |
|
|
Term
|
Definition
| lines interior/lumen, endothelium, decreases friction of blood flow |
|
|
Term
|
Definition
| bulky, middle coat,smooth muscle and elastic tissue, changes diameter |
|
|
Term
|
Definition
| outer coat, fibrous CT, supports |
|
|
Term
| why do arteries have a thick tunica media |
|
Definition
| they have to withstand a lot of pressure when the heart forces blood out |
|
|
Term
| what is special about veins? |
|
Definition
| they are 2-5 times the size of arteries, they have a thin tunica media, and there is no pressure |
|
|
Term
| what is secial about capallaries? |
|
Definition
| only have a tunica intima, this is also where diffusion takes place, & oxygen exchane |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| which way does blood flow in veins |
|
Definition
|
|
Term
| how do we get the blood in the veins back the hert? |
|
Definition
|
|
Term
| What 3 things affect blood pressure |
|
Definition
| diameter, length, and viscosity |
|
|
Term
|
Definition
| can change in unhealthy people, the bigger diameter is the lower blood pressure is |
|
|
Term
|
Definition
| usually constant, the longer it is the higher blood pressure is |
|
|
Term
|
Definition
| thickness of fluid, usually constant, thicker blood is the higher blood pressure is |
|
|
Term
| 3 types of capallaries and where you find them |
|
Definition
continuous: muscles and skin
fenestrated (cells w holes): kidneys, endcrine glands, small intestines
sinusoids:irregular shaped lumens, sluggish, bone marrow, liver, and lymphoid tissue |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| in a network of streams is the reconnection of two streams that previously branched out, such as blood vessels or leaf veins |
|
|
Term
|
Definition
| blood pools in feet and legs, inefficient venous return, overworked valves give way, veins become twisted and dilated |
|
|
Term
| what is pulse pressure and what does it indicate? |
|
Definition
| the difference between systolic and diastolic pressure, and it represents the force that your heart generates each time it contracts |
|
|
Term
|
Definition
mean arterial pressure, pressure that propels blood to the tissues
diastolic+pulse pressue/3 |
|
|
Term
|
Definition
| pressure during conntraction |
|
|
Term
|
Definition
| lowest level of arterial pressure |
|
|
Term
|
Definition
| constant moderate constriction, the brain controls this |
|
|
Term
| what are baroreceptors, and where are they found |
|
Definition
| help adapt to high or low blood pressure quickly, they are found in the blood vessels, they are a type of mechanoreceptor |
|
|
Term
|
Definition
| ADH= higher BP, higher H2O, higher blood volume= mild vasoconstriction |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| what is chronic hypotension |
|
Definition
| low blood viscosity, may be due to poor nutrition, addisons disease, or hypothyroidism |
|
|
Term
|
Definition
| major cause of heart failure, progressive disease that wears and tears on heart and arteries |
|
|
Term
| what is myogenic and metabolic controls for reperfusion? |
|
Definition
| response due to lack of stretch in blood vessels, and response due to accumulation of metabolic wastes in tissues |
|
|
Term
|
Definition
| large scale blood loss, weak pulse initial sign, drop in bp late sign, must replace fluid volume quickly |
|
|
Term
|
Definition
| walls of vessels harden and block lumen, increases bp |
|
|
Term
| what do lymphatic vessels resemble |
|
Definition
|
|
Term
| where do you put lymph back into the blood stream? |
|
Definition
| capallaries to vessels to ducts, and to the venous system |
|
|
Term
| where do you find lymph nodes in the body? |
|
Definition
| clustered along the lymphatic vessels |
|
|
Term
| what is a splenectomy, and why do we not do them anymore, especially on children? |
|
Definition
| removal of spleen when hemoragging, we dont do this anymore because it causes the liver to get tired because it takes over all the duties, and we dont do it on children because it has something to do with their immune systen maturing |
|
|
Term
|
Definition
| found in the inestines, and it acts as the 2nd barrier with lymph nodules |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| A colorless fluid containing white blood cells, which bathes the tissues and drains through the lymphatic system into the bloodstream. |
|
|
Term
|
Definition
first line of defense: skin and mucous membrane
second line of defense: cells and chemicals |
|
|
