StudyGuideFinal - Biology Study Guide 1. Tissues a....

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology Study Guide 1. Tissues a. Epithelial – covers a body surface or lines a body cavity o Characteristics: high cellularity, supported by connective tissue, specialized contacts, avascular, regenerative, polarity, innervated o Specializations: apical end – cilia are mobile, create fluid movement; microvilli used for absorption, increase surface area Basal surface Connective tissue – capillary supply blood; nerve endings b. Connective Tissue o Characteristics: common origin, various degrees of vascularity, ECM, special cells o Functions: structural framework for the body, transport nutrients and waste, provide protection for vital organs, support and interconnection, insulate, store energy & produce impt cells of blood and lymphatic tissues, contribute to body defense/repair c. Muscle Tissue o Highly cellular and vascularized, contractile, excitable d. Nervous Tissue o o 2. Body Fluid Compartments – separated by a semi-permeable membrane a. Intracellular Fluid – 60% b. Extracellular Fluid – subdivided with a leaky epithelium o Plasma – vascular o Interstitial fluid – RBC, WBC, platelets too large to cross epithelium 3. Fick’s Law a. Rate of diffusion is proportional to (SA)(Conc Grad)(Mem Permeability) / (Mem thickns) b. Factors affecting rate of diffusion: lipid solubility, molecular size, cell membrane thickness, concentration gradient, membrane SA, composition of lipid layer 4. Transport a. Active Transport – requires input of energy o Primary (direct) active transport – energy from ATP/GRP o Secondary (indirect) – energy from potential energy stored in conc. gradient b. Facilitated Transport – passive – down a concentration gradient o Simple diffusion, facilitated diffusion (glucose, amino acids), osmosis (water)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/07/2008 for the course BIO 416K taught by Professor Findell during the Fall '08 term at University of Texas at Austin.

Page1 / 4

StudyGuideFinal - Biology Study Guide 1. Tissues a....

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online