Arteries arterioles

A highly complex network of arteries, arterioles, and capillaries penetrates the dermis from below and extends up to the surface of, but not actually into, the epidermis. A matching venous system siphons the blood and returns it to the central circulation. Blood flow through the vasculature is linked to the production and movement of lymph through a complementary dermal lymphatic system. The dermis is laced with tactile, thermal, and pain sensors. 

Distinguish among arteries, arterioles, capillaries, and veins in terms of their anatomical characteristics and their functions... 

Blood vessel A tube in the body through which blood circulates. Blood vessels include a network of arteries, arterioles, capillaries, venules, and veins. [NIH]... 

IHC shows constitutive and inducible CYPIBI in artery smooth muscle cells, leptomeninges, cerebral arteries/arterioles, and ependymal cells (Granberg et al., 2003). 

The main indication for an inhibition of a-adreno-ceptors is an increased blood pressure. Drugs like prazosine, doxazosine or terazosine block selectively O 1-adrenoceptors, resulting in a relaxation of resistance arteries, arteriols and venules. This subtype selectivity, leaving the Q 2-iiiediated autofeedback control unaltered, may be the cause for... 

Mechanism of Action An antihypertensive that inhibits calcium ion entry across cell membranes of cardiac and vascular smooth muscle decreases heart rate, myocardial contractility, slows SA and AV conduction. Therapeutic Effect Dilates coronary arteries, peripheral arteries/arterioles. 

Smooth muscles are present in tissues requiring sustained contraction, rather than rapid contraction and relaxation. Smooth muscles regulate the flow of blood through arteries, arterioles, and veins, where they control the size of the lurnen of the vessel They occur in the gastrointestinal tract, where they are responsible for... 

Cerebral blood volume (CBV) is defined as the total volume of blood in a given unit volume of the brain. This definition includes blood in the tissues, as well as blood in the large capacitance vessels such as arteries, arterioles, capillaries, venules, and veins. CBV has nnits of milliliters of blood per 100 g of brain tissue (mL/100 g). 

The cardiovascular system consists of the heart and blood vessels. The heart is primarily composed of myocardial cells made np of mitrochondria. The blood vessels consist of arteries, arterioles, capillaries, and veins. Although the heart is not a common target organ, many chemicals can affect it, either by damaging the myocardinm or by acting indirectly through the blood vessels or nervous system. Some of the general toxic effect of chemicals on the cardiovascnlar system are briefly discussed in this section. 

Equations 16 and 23 [or (1.15) and (1.22)] can be used to simulate either a segment of a blood vessel or the entire blood vessel itself. In small blood vessels, the inductance L is very low compared to the resistance term R, and therefore the inductance term can be neglected in small arteries, arterioles, and capillaries. Since there is no oscillation of pressure in the capillaries, the inductance term can be neglected in vessels downstream of the capillary (i.e., venules, veins, and vena cava, etc.). 

Site Ascending aorta Descending aorta Abdominal Femoral aorta artery Carotid artery Arteriole Capillary Venule Vena cava, inferior Pulmonary artery, main... 

NOS I is predominantly localized in macula densa cells, while NOS III is found endothehal cells of arteries, arterioles and glomerular capillaries (Bachmann etal. 1995). In order to characterize the promoters active in the macula densa and to study the regulation of NOS I expression in these cells, Oberbaumer etal. (1997) cloned the 5 ends of NOS I from rat kidney by RT-PCR. They found that the two alternative first exons of brain NOS I were not contained in the main NOS I mRNA from kidney. 

Renal Artery Blood vessel that carries blood from the aorta into the kidney. Inside the kidney, the renal artery branches into kidney tissue until the smallest artery (arteriole) leads to a glomerulus, where filtration can begin. 

Blood vessels either delivering oxygenated blood - arteries, arterioles, capillaries or returning with carbon dioxide -veins and venules, display highly nonlinear elastic and anisotropic mechanical behavior and exhibit complex material properties [1,2],... 

The main feature of SSc is overproduction and accumulation of collagen and some other extracellular matrix proteins in the skin and other organs. The fibrosis is usually preceded by vascular injury involving small arteries, arterioles and capillaries in the skin, lungs, gastrointestinal tract, kidneys and heart. 

---