Tight junctions Samenvattingen, Aantekeningen en Examens

What is the ECM? ANS Extracellular matrix a network of proteins and polysaccharide chains that are secreted by cells What are the two forms of the ECM? What are they each? ANS ECM of connective tissue= fibrous polymers like collagen Basal Lamina= flexible, thin mat of specialized ECM that underlies epithelial cell sheets and tubes What are the two ways that cells are attached in tissue? ANS either to the basal lamina or to the ECM and to each other What are the 4 main types of junct...

Testbank for Biology 2nd Edition from OpenStax Collegeable of Contents Chapter 1 ................................................................................................................................. 2 Chapter 2 ................................................................................................................................. 2 Chapter 4 ................................................................................................................................. 5 Cha...

1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student? a. A single circular chromosome b. A nucleus c. Free-floating nuclear material d. No organelles ANS: B The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus; thus, the nucleus should be observed. A single circular chromosome is characteristic of prokaryotic cells, whic...

Which intercellular junction allows for the rapid movement of small molecules or ions to flow from one animal cell to the next? a. gap junctions b. tight junctions c. adhesion junctions d. desmosomes e. plasmodesmata > ANSWER: gap junctions When a lysosome fuses with a vacuole, a. they both disappear. b. they both return to the Golgi apparatus. c. protein synthesis begins. d. division begins. e. its contents are digested. > ANSWER: its contents are digested According to cell...

Tunica Intima correct answersinternal-contains endothelium Tunica Media correct answers(middle)-layers of elastin and smooth muscle cells, where vasoconstriction/dilation occurs Tunica Externa correct answers(external)-loosely woven collagen fibers, also contains nerves/elastin fibers/lymph vessels Elastic Arteries correct answers(Conducting)-located near the heart, aorta and branches, largest in diameter Muscular Arteries correct answers(Distributing)-majority of 'named' arteries,...

VTNE: Pharmacology Questions and Answers 100% Pass Who regulates controlled drugs? The FDA (Food and Drug Administration) and the DEA (Drug Enforcement Administration) C-I Schedule I drugs have the most abuse potential and no current medically acceptable use Marajuana, heroin C-II Schedule II drugs have a high abuse potential and are prone to cause severe dependence Written prescription only (except in emergencies with written script within 72 hrs) No refills Morphine, oxycodone, amphetamines,...

NURS 5315 Advanced Pathophysiology TEST 2 ELSEVIER QUESTIONS AND ANSWERS. Chapter 7 Innate Immunity Questions 1. 1.ID: 80 Which of the following is an example of a physical barrier? A. Antibacterial fatty acids B. Lysozymes in tears C. Epithelial cells Correct Epithelial cells form tight junctions that are a physical barrier to entry for organisms. Sebaceous glands in the skin secrete antibacterial and antifungal fatty acids. Earwax and lysozymes in tears are examples of biochemical secr...

Understanding Pathophysiology 7th Edition Test Bank Chapter 1. Cellular Biology MULTIPLE CHOICE 1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student? a. A single circular chromosome b. A nucleus c. Free-floating nuclear material d. No organelles ANS: B The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus; thus, the nucleus...

Portage Learning BIOD 101 Module 1 Problem Set Essential Biology I with Lab 202 Bowman 4/6/22, 10:26 PM Module 1 Problem Set: Essential Biology I with Lab-2021- Bowman Answer: Matter is anything that takes up space, by having a volume, and has mass. Matter can exist in a solid, liquid or gaseous (vapor) state. All matter is made up of certain basic substances called elements (See section 1.1 in module). Your Answer: Matter is anything that takes up space, by having a volume, and has ma...

What does an Aquastat do? - correct answer Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? - correct answer Automatic safety control (normally closed). Senses water level in the boiler. If level drops the switch opens and shuts off the gas valve. in series with gas valve.,What does a water flow switch do? - correct answer Automatic safety control (normally open). Senses water flow an...

Question 1 Correct 1.00 points out of 1.00 Flag question Question text In an ecosystem, energy Select one: a. comes ultimately from bacteria b. cycles along with chemical nutrients c. typically flows from producers through a series of consumers d. typically flows from consumers to producers to decomposers Question 2 Correct 1.00 points out of 1.00 Flag question Question text Life is organized in a hierarchical fashion. Which of the following sequences correctly lists that hierarchy from least in...