ANATOMY 328 Lecture Notes - Lecture 33: Fibrinogen, Polycythemia, Viscosity
Document Summary
Vessel wall layers: tunica intima, endothelium, tunica media, tunica externa, vasa vasorum. Arteries: elastic arteries, muscular arteries, distributing arteries, arterioles, vasoconstriction, vasodilation. Capillaries: capillary bed, metarteriole, thoroughfare channel, continuous capillaries, fenestrated capillaries, sinusoids (sinusoidal) capillaries. Blood: hematopoiesis, formed elements, plasma, erythrocytes, blood type. List of terms: surface antigens (a & b, antibodies, rh factor, anemia. Blood is pushed into it, so it needs to be able to absorb the blow and return to its shape. Coordinate immune cell activity, attacks pathogens and abnormal or infected cells, produces antibodies infection. Bp; and as they dilate, they decrease bp: capillaries, venulues, smallest of veins, low pressure, travel with arterioles, medium-sized veins, tend to travel with muscular arteries, larger veins travel with larger arteries. If veins have very low pressure, how does blood get back to the heart against gravity: 1. Respiratory pump: differences in thoracic pressure brings blood back to heart.
