Bio 169 exam 2 - Study guides, Class notes & Summaries

____ are the smallest blood vessels. - Capillaries ____ is the amount of blood pumped out of each ventricle in one minute. - stroke volume ____ is the force per unit area exerted on he wall of a blood vessel by its contained blood. - Blood pressure ____ is the internal resistance to flow, and is related to the thickness of blood. - Blood viscosity ____ refers to the relaxation phase of heart activity. - Diastolic ____ transport blood away from the heart. - Arteries Because of ____, the my...

The heart is about the size of a ____. - fist The heart is enclosed in a double-walled sac called the _____. - pericardium The heart wall is composed of _____ layers. - 3 The _____ forms the bulk of the heart, and is the actual contractile layer (layer that contracts). - myocardium The ____ lines the heart chambers and covers the connective tissue skeleton of the valves. - endocardium The ____ forms most of the anterior surface of the heart. - left ventricle The atria have ____...

The ____ is located on the right atrial wall, and is responsible for setting the pace of the heart rhythm. - Answer sinoatrial node True or False: The atrioventricular bundle is the only electrical connection between the atria and ventricles. - Answer True Depolarization moves across the heart ____. - Answer in a wave The cardiac centers are located in the ____. - Answer medulla oblongata

What are antibodies composed of? heavy and light polypeptide chains Passage of antibodies from a pregnant mother to her fetus is an example of which type of immunity? passive immunity B lymphocytes develop immunocompetence in the.... bone marrow What are the 3 functions of the inflammatory response? 1. prevent the spread of injurious tissue to nearby tissue 2. dispose of cellular debris and pathogens 3. set the stage for repair to occur The redness and heat of an inflammed area is due to local s...

Bio 169 Final Exam Questions And Answers Graded A+ How long is the typical lifespan of red blood cells? Approximately 120 days. Hemoglobin consists of which components? Protein chains known as globin and iron. What are the two substances produced from the breakdown of red blood cells? Bilirubin and biliverdin. What roles does hemoglobin play in the body? It carries oxygen and carbon dioxide and helps regulate pH levels. What is true about erythropoietin? It is secreted by ...

BIO 169 Exam 1 Questions and Answers Already Passed What term is used to describe the body's ability to keep its internal conditions steady within a range of normal limits? Homeostasis Which chemical can function as a neurotransmitter in some parts of the body and as a hormone in others? Norepinephrine What are hormones called that act on the same cell that produces them? Autocrines Which type of local signaling molecules, derived from fatty acids, influence various tissue...

BIO 169 Final Exam Questions and Answers Already Passed What functions does the endocrine system perform? It oversees vital processes including reproduction, metabolic regulation, development, fluid and electrolyte balance, and stress management. What are paracrine signals, and what are their characteristics? These are local hormones that affect nearby cells by diffusing through the surrounding fluid. They are highly effective, secreted in minimal quantities as needed, and are rapid...

BIO 169 Exam 1 Questions and Answers Already Passed What is an essential aspect of factors that resist blood flow? All of the Above What term describes a network that permits an organ to be supplied by several arteries or to drain through multiple veins? Vascular anastomoses How should arteries be accurately described in terms of their role? They are the vessels that deliver blood away from the heart What effect does a drop in hematocrit have on the viscosity of blood and cons...

ATI Comprehensive Exit Exam - 180 Correct Questions & Answers 2022/2023 EXIT EXAM 1. A nurse is caring for a client who has given informed consent for ECT. Just before the procedure, the client tells the nurse she is considering not going forward with the treatment. Which of the following statements by the nurse is appropriate? a. “You don’t have to go through with the treatment.” b. “Most people who have this procedure feel better following the treatment.” c. “It’s okay to be nerv...