PPT-Excitable Tissues

and Resting Membrane Potential Part 2 Action potential Action Potential An action potential can be thought of as the firing of the neuron Action potentials will propagate down the length of a neurons axon. Excitable Tissue able to gener ate Action Potentials APs eg neurons muscle cells B Neurons nerve cells a components 1 soma cell body metabolic cent er vital always present contains cell nucleus information integration 2 dendrites branches from the s Here however we confine atten tion to cells that perform their functions by undergoing a macroscopic transition in response to an external stimulus Mostly the transitions are reversible although in some cells they occur but once Examples of repetit Figure 1. CD3+CD4+ live61%40%CD3+CD4+ no discriminationStat5(pY694) Alexa Fluor Tidbit Title: Understanding membrane potentia. l. Facilitators:. Thomas Torello, Harvard University . Cynthia Wagner, UMBC. Howard Sirotkin, Abhay Deshpande: Stony Brook University. Thomas Abbott, Kristen Kimball: UCONN. - cium channels (VGCCs; also known as Ca V s) respond to a depolarization of membrane potential by allowing Ca 2+ entry. This response provides Ca 2+ for many processes, including neurotransmitter Basic reference: Keener and . Sneyd. , Mathematical Physiology. So far we concentrated on Na. +. (and K. +. ), as those are the ions that are most important for the control of cell volume and the membrane potential.. 9/21. Review the origins of the four primary tissue types. What extracellular fibers are found in connective tissue?. What is the function of connective tissue?. What are characteristics of the ten different connective tissues?. Biology Department. Plant Tissues. Tissues can be classified into . :. Meristematic. tissues. . Permanent . tissues. I . . Meristematic. . tissues. They are usually called meristems. . They . are young tissues of the embryo or the mature plant which . How do cells, tissues, organs, and organ systems explain the complexity of living things?. Essential. Question:. Turn to a seat partner and discuss the characteristics of living things. .. Let’s Review. Connect body parts, widely distributed. Functions. Protect, Support, Bind. Characteristics. Varied blood supply. Contain an extracellular matrix. Extracellular Matrix. Produced by connective tissues. Dr.Duran Kala. 4-. 2. Tissues and Histology. What is a Tissue?. A collection of similar cells and noncellular substances (extracellular matrix) secreted by the cells. Tissue Level of Organization. Epithelial . Fitua. Al-. Saedi. The . human . body is composed of four main types . of . tissues . :. . 1. . Epithelial . tissues . 2. . Connective . tissues. 3. Muscular . tissues. 4. . Nervous . tissues. A.  . What is ? Your nervous system coordinates your mind and body: it learns, adapts and responds to everyday experiences, allowing you to grow, adapt and function well. system is dynamic and plastic. It LO: to learn how tissues in a leaf have adapted to perform their function. Starter:. Recap – what are the functions of each tissue type?. Epidermal. Mesophyll. Xylem and phloem. Plant Organs and Tissues.