--%>
Assignment Help - homework help

Is epithelium vascularized

Is epithelium vascularized? How do oxygen and nutrients reach the epithelium? Why is this characteristic an important evolutionary acquisition?

E

Expert

Verified

Epithelia are not vascularized (that is, capillaries do not directly accomplish their cells). The epithelium exchanges substances through diffusion with the connective tissue located under it. Since the epithelia are not vascularized minuscule skin wounds or scratches which take place all the time do not trigger bleeding and do not expose the blood to contamination from exterior agents. This is a significant protective strategy introduced by evolution.

   Related Questions in Biology

  • Q : Modes of transmission-main

    What are the modes of transmission, main signs and symptoms and treatments of hepatitis C?

    		•
  • Q : What are Marketing segments Marketing

    Marketing segments are the groups of similar characteristics in market place who are interested in buying our products and services. At present our segments comprise of two categories in employees and college and university students. Marketing to each

    		•
  • Q : Where mRNA synthesis take place In

    In eukaryotic cells where does mRNA synthesis take place? To where do such molecules migrate?

    		•
  • Q : Define the term glycolysis Define the

    Define the term glycolysis? Name the products of such process?

    		•
  • Q : Morphological features of echinoderms

    Write down basic morphological features of echinoderms?

    		•
  • Q : Vitamin D and sunrays State the

    State the association between vitamin D and sunrays?

    		•
  • Q : Limitations of the structure of the USA

    Read the attached article and address the following questions in 2000 words APA formatted paper: 1. Critically examine the limitations of the structure of the U.S. Healthcare System.<

    		•
  • Q : Positive ions present in living beings

    Name the main positive ions present in living beings?

    		•
  • Q : Neo Freudian Personality Theory -

    There were several Freud's colleagues who disagreed with his rigid adherence to consider only the basic biological or instinctive as determinants. According to these neo-Freudian's, social relationships played a vital role in the formation and development of personality. For instance, Alf

    		•
  • Q : Disadvantages of Biodiesel

    DISADVANTAGES OF BIODIESEL: A) Energy required to produce Biodiesel and ethanol is high per unit of energy they produce by burning. B) Calorific value of bio diesel is less. Hen

    		•