IPHY 3410 Lecture Notes - Lecture 2: Goblet Cell, Microvillus, Neuron

• School: CU-Boulder
• Department: Integrative Physiology
• Course: IPHY 3410
• Professor: Leif Saul

Document Summary

-ex: goblet cell: secretes mucus tissue: ability to regenerate quickly, avascular= not associated with blood vessels. Innervated= associated with nerve cell process: functions, absorption and secretion. -both are active (cell uses energy, mitochondria involves) -usually involves microvilli= extension to increase surface area: diffusion and filtration. -filtration= plasma (fluid component of blood) leaks across capillary walls. -cilia drive fluid along surface of epithelium: propulsion, sliding, protection. By shape: squamous vs. cuboidal vs. columnar. Simple columnar: nonciliated: lines most of digestive tract. Even more room for organelles (er and mitochondria) -goblet cell (example): secrete mucus to digestive and respiratory tracts: ciliated: lines small bronchi (air tubes in lung) -also lines of uterine tube: moving egg from one position to another position: all cells attached to basement membrane, so not truly stratified, undifferentiated cells don"t reach apical surface, nuclei occur at different levels, so tissue looks stratified .