NUR 3129 Pathophysiology Exam 1 Study Guide- NUR 3129 Path Exam 1 Best Guide.

10 NUR 3129 Path Exam 1 study guide Chapter 2 Osmosis Diffusion – movement of particles Facilitated diffusion pg 24 Neurons impulse transmission /afferent (also called sensory neurons to take info to CNS)/efferent (Carries info away from the CNS) nerves pg 37 Determination of cell membrane potential ions/intracellular ions(K) vs extracellular ions pg 24 • Know normal numbers. • When K goes up (in ECF), interventions will be taken to put it back in the cell • K in charge of membrane potential • Membrane potential is due to the different charges on the two sides of the cell due to the difference concentration of ions Functions of cell membranes pg 16 • barrier; semi-permeable structure. allows ions to cross membrane • provides receptors for hormones and enzymes • Aids in the regulation of cell growth and proliferation • Participates in the electrical events that occur in nerve and muscle cells Chapter 3 Atrophy all types pg 41-42 • Disuse: reduction in skeletal muscle use • Denervation: form of disuse atrophy, occurs in muscle of paralyzed limbs • Loss of endocrine stimulation: form of disuse atrophy; i.e loss of estrogen during menopause Hypoxia/ischemia pg 50-51 • Ischemia: impaired oxygen delivery and impaired removal of metabolic end products such as lactic acid o Reduced blood flow o Local tissue injury • Hypoxia: reduced oxygen in the cells o Inability of the cells to use oxygen • Vasoconstriction causes limited blood flow so the two