University:
Indiana University South Bend
Course:
ANAT-A 210 | Human Anatomy
Academic year:

2023
Views:

409

Pages:

2
Author:

Jonathan K.

CELLS No Cell basicS Date About 100 trillion cells in a human - Size and shape related to function -In general very small, but a range of sizes 1.8-140 mm in diameter, but typically 10-20 µm (µm = 1/1000 mm or 1/25.000 inch) - The Generalized Cell and its major parts 1. plasma membrane separates inside from outside 2. nudeus is the control center 8. cytoplasm is everything between the nucleus and the plasma membrane 1. The Plasma Membrane - Structure 1. Phospholipid bilayer is the basic structure 2. Cholesterol 3. Protein 4. Carbohydrates Basic Functions 1. Communication within body and with non-self cells 2. Devines boundaries and protects 3. Maintains chemical and electrical gradients 4. Selective permeability controls what gets in and out. Membrane Transport 1. Passive (cells does not use up its own energy). 2. Active (requires the cell to use its ATP) 17. Nucleus -Usually round, at all center 1. Double membrane 2. Has large nuclear pores 3. Contain's nucleoli parts to make ribosomes 4. Contains DNA 1. Organelles Endoplasmic reticulum (ER) 1. Membranous network of channels 2. Rough ER 3. Smooth ER - Golgi Complex 1. Stacked membranous sac 2. Processing, sorting, packaging of ER produc 3. Makes vesicles for transport to destinations inside cell or for secretion. -. Lysosomes 1. Sacs contain digestives enzymes Peroxisomes 1. Sacs contain oxidative enzimes 02 used to detoxify harmful substances Mitochondria Double-membraned, makes ATP via celluler respiration. - Vaults 1. Probably involved in transport between nucleus and cytoplasm Centrosome 1. Found near nucleus 2. Concists of centrioles (protein tubules) surrounded by a centrosomes matrix (a cloud of protan) 3. Organizing center for parts of the of the cytoskeleton.