the membrane potential to reach the threshold potential at which it fires the next action potential (pacemaker potential). Thus‚ the pacemaker potential is what drives the self-generated rhythmic firing. This is known as cardiac muscle automaticity.[2] Pacemaker potentials are fired by sinoatrial node (SAN)‚ but also by the other foci. However‚ the last ones have firing frequencies slower than the SAN’s. When other foci attempt to fire at their intrinsic rate‚ they can’t because they have been
Premium Action potential
| Fantastic Voyage | Battle of the Lung | | India Hornsby | HS 130‚ Section 03Unit 4 AssignmentKaplan UniversityMarch 27‚ 2012 | | Good morning everyone! Signing on‚ India Hornsby with ASAP Health. I will be reporting live inside Mrs. Frizzle. She has been under the weather for about two days now. A bacterium is invading the lower lobe of her right lung. It’s my job to pilot the invasion and do a live report on what I see. I will enter from the right femoral vein and follow a path
Premium Heart Blood Immune system
Anatomy‚ physiology‚ and injury treatment and prevention are all very important when dealing with sport and entertainment. Specifically‚ in the art of ballet. It is important to know your body and how it works. This will help you learn how to move it in a certain way to achieve a skill. It is also important to know how to treat injuries when they do occur and ways to possibly prevent them in the future. Many ballet dancers are given anatomy lessons to help them better understand how to move and
Premium Patient Nursing Health care
This essay will outline the functions of the main cell components‚ these consist of the nucleus‚ nuclear membrane‚ mitochondria‚ lysosomes‚ Golgi apparatus‚ cell membrane‚ ribosomes‚ cytoplasm and endoplasmic reticulum both rough and smooth. Images: [3] Every human body has billions of microscopic units called cells. Cells carry out numerous of chemical reactions and processes that make up the essence of life. The structure of cells varies in size and shape and has different functions. There
Premium Protein Cell Cell nucleus
Anatomy and Physiology of Central Nervous System and Complex Nervous Activity PSY 119 Spring 2015 Professor: Elena Molchanova‚ MD Office: Main Building‚ 209 Office phone: 663309 (*239) Email: molchanova_e@auca.kg‚ emolchanova2009@gmail.com Office hours: by appointment Course language: English Classes: Monday‚ Wednesday‚ Friday 9.00 – 9.45 Credits: 6 Prerequisites: no Course status: required Course materials Main textbook 1: Carlson‚ N. (2007). Physiology of Behavior‚ 9th edition (downloaded
Premium Nervous system Neuroscience Psychology
zona glomerulosa - releases mineral corticoids - aldosterone: anti-diuretic. Retain na+ --> leads to h2o retention (Low levels of aldosterone)-->. Hypovolemia- low blood volume-->. leads to low blood pressure 2. - zona fasciculata- glucocorticoids - cortisone‚ cortisol -resist stressors. -increase glucose in blood -increase protein synthesis : by releasing amino acids into blood -increase fatty acids in
Premium Immune system Lymphatic system
Week 2 LAB EXERCISE Introduction to Chemical Digestion Directions: a. Click the Contents button. b. Open the Digestive System File. c. Click Animations. d. Click Introduction to Chemical Digestion. Introduction 1. Explain the function of chemical digestion. The function is to break down food‚ using enzymes and other digestive chemicals to reduce food into particle nutrients molecules that be absorbed and move it through the digestive tract. Digestive Chemicals 2. What
Premium Digestion
My Anatomy and Physiology of Love I am on a deep REM sleep And I dreamt of you my precious that I keep I was in the lab and I am dissecting something What?! Me myself? It’s me I’m killing??! No‚ my dear it isn’t I am just diagnosing myself About my feelings for my conscious health This heart of mine beating lub dub for you Hoping you’ll hear it by your auditory nerves too. When I first saw you my optic nerves were cursed By your.. orbicularis oculi and oris With your personality
Premium Marriage Anatomy Biology
2. Compare the development of lymphocytes with other formed elements. B lymphocytes develop in red bone marrow‚ T lymphocytes develop in red bone marrow and mature in the thymus; the other formed elements develop in red bone marrow 3. What is erythropoiesis? Which factors speed up and slow down erythropoiesis? Erythropoiesis is the process by which red blood cells (erythrocytes) are produced. If you lose a lot of blood‚ erythropoiesis will speed up; anemia can cause erythropoiesis to slow down
Premium Immune system Red blood cell White blood cell
our body is exactly offset by their loss. When acid–base balance occurs‚ the pH of body fluids stays within normal limits. Stopping a reduction in pH is the main problem‚ because our body produces a variety of acids during normal metabolic tasks. 2. Why does maintaining fluid balance in older people require a higher water intake than in a normal‚ healthy adult under age 40? Water encompasses 55% in elderly people and is vital for cellular homeostasis and life. With respect to heat stress‚ water
Premium Kidney Blood Electrolyte