ANP 1105 Lecture Notes - Lecture 4: Aponeurosis, Troponin, Basophil

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Jacqueline Carnegie

Document Summary

Secrete products onto body surfaces (skin) or body cavities. Secretes mucous, sweat, oil, salivary gland, liver (bile), pancreas (digestive enzymes) Unicellular (goblet cell): lining of intestine and respiratory tract amid columnar cells produce mucin which forms mucus in water (slimy protective coating) Multicellular: epithelium derived duct and secretory unit (acinus) made of secretory cells most have supportive connective tissue around secretory unit, blood vessels and nerve bers. Duct structure: simple (unbranched duct) vs compound (branched ducts) Secretory structure: alveolar ( ask like) vs tubular (tubuloalveolar) Merocrine: products secreted by exocytosis (pancreas, sweat, and salivary glands) Holocrine: products secreted by rupture sebaceous (oil) glands of skin. Pseudostrati ed columnar: cells vary in height, not all reach the cell surface. Nuclei seen at di erent layers gives false impression that there are several layers. Secretion of mucus, propulsion of mucus by ciliary action. Nonciliated: male"s sperm carrying ducts and ducts of large glands. Ciliated: lines trachea, most of upper respiratory tract.