ANP 1105 Lecture Notes - Lecture 1: Desmosome, Cardiac Muscle, Passive Transport

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

Document Summary

Structural organization of the human body: cytology is the study of cells. Intermediate filaments: protein fibers: microtubules: cylindrical structures of tubulin proteins, form bases for cilia and flagella, organize mitotic spindle in cell division, composed of 9 triplets of microtubules. Other cellular inclusions: storage of nutrients, wastes, cell products, lipid droplets, glycogen granules, protein crystals, etc. Cilia: propels substances across cell surfaces, composed of 9 pairs of microtubules surrounding a central pair. Increase surface area for absorption: extensions of plasma membrane, contain bundle of actin filaments. Nuclear envelope: separates cytoplasm and nucleoplasm, regulates substance transport in and out of nucleus, composed of double membrane. Atoms are composed of protons, neutrons, and electrons: molecules are a combination of atoms, and are the smallest amount of a substance that can exist alone, organelles are a combination of molecules that associate in specific ways. Organelles are the basic components of living cells.