PHYL 141 Lecture Notes - Lecture 4: Thyroid, Intermediate Filament, Lamina Propria

• School: UH, UH Manoa, UHM
• Department: Physiology
• Course: PHYL 141
• Professor: Rachel Lindsey

Document Summary

Tissue group of cells that usually have a common embryonic origin & function together to carry out specialized activities. Histology science that deals with study of tissue. Pathologist physician who examines cells & tissues for any changes that might indicate disease to help other physicians make accurate diagnoses. Biopsy removal of a sample of living tissue for microscopic examination to help diagnose disorders (like cancer) & to discover causes of infections/inflammations. In the process, generates heat that warms body. Cell junctions contact points between plasma membranes of tissue cells that hold cell together & includes: (1) tight junctions, (2) adherens junctions, (3) desmosomes, (4) hemidesmosomes and (5) gap junctions. Weblike strands of transmembrane proteins that fuse together the outer surfaces of adjacent plasma membranes to seal off passageways between adjacent cells. Prevents contents of organs from leaking into blood/surrounding tissues by restricting movement of substances. Ex: cells of epithelial tissue that lines stomach, intestines & urinary bladder.