Lab Practical Study Guide

1424 WordsJun 5, 20126 Pages
LAB PRACTICAL 2 * Skin * Comprised of all 4 main tissue types * Epithelial * Connective * Muscular * Nervous * Part of the integumentary system * Function: * Protection * Body temperature regulation * Vitamin D synthesis * Sensation to touch, pressure, pain and temperature * 2 main regions: * epidermis * 5 strata * corneum * top layer, cornified layer, layers of dead cells and soft keratin * lucidum * granulosum * spinosum * basale * deepest layer, contain melanocytes…show more content…
irregular shape * Exceptions: * Umbilical vein carries oxygenated blood from the placenta to the fetus * Umbilical artery carries deoxygenated blood from the fetus to the placenta * Pulmonary artery brings deoxygenated blood away from heart * Pulmonary vein brings oxygenated blood to the heart * Heart * Atrium = receives blood * Ventricles = generates force to propel blood through circ. System * Av valves separate atrium and ventricle * Right atrium and right ventricle = tricupsid valve * Left bicupside valve * 2 systems * pulmonary = low pressure, too and from lung * systemic = high pressure, to and from rest of body * Pulmonary System * Return blood from the body to the right atrium, low in oxygen * Arrives in 2 large veins * 1) superior (upper) vena cava * 2) inferior vena cava * right atrium contracts and sends deoxy blood to right ventricle * passes through right AV valve tricupsid * right ventricle contacts and sends blood to lungs via pulmonary artery * passes through pulmonary valve * right ventricle powers the movement of blood through the pulmonary circulation * blood that returns to the left atrium from lungs *
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