physiology

Human Physiology : How Does the Body Make Blood? Several parts of blood, including red blood cells, white blood cells and platelets, are made inside bone marrow. Find out where blood plasma comes from with information from a science teacher in this free video on physiology and the human body. Expert: Janice Creneti Bio: Janice Creneti has a BS in secondary science education and a BA in biology from Boston University. Filmmaker: Christopher Rokosz

Physiology of Flight: Spatial Disorientation airboyd.tv Courtesy Federal Aviation Administration Civil Aerospace Medical Institute.

Human Physiology : What Is the Cell Cycle? The cell cycle is a series of events that cells go through to reproduce and create more cells. Learn about the stages of the cell cycle with information from a science teacher in this free video on physiology and the human body. Expert: Janice Creneti Bio: Janice Creneti has a BS in secondary science education and a BA in biology from Boston University. Filmmaker: Christopher Rokosz

Lipoprotein Physiology: Chylomicron (2/4) Chylomicron physiology

17. Renal Physiology (cont.) Frontiers of Biomedical Engineering (BENG 100) Professor Saltzman continues his description of nephron anatomy, and the specific role of each part of the nephron in establishing concentration gradients to help in secretion and reabsorption of water, ions, nutrients and wastes. A number of molecular transport processes that produces urine from the initial ultra-filtrate, such as passive diffusion by concentration difference, osmosis, and active transport with sodium-potassium ATPase, are listed. Next, Professor Saltzman describes a method to measure glomerular filtration rate (GFR) using tracer molecule, inulin. He then talks about regulation of sodium, an important ion for cell signaling in the body, as an example to demonstrate the different ways in which nephrons maintain homeostasis. Complete course materials are available at the Open Yale Courses website: open.yale.edu This course was recorded in Spring 2008.

Heart Physiology (Length-tension plot: part 5/6) Length-tension curve of the heart and skeletal muscle

Mr.Ford's Anatomy & Physiology: Lesson 02:09 part 1 Lipids Lipids are one of the macromolecules needed for us to survive. In this video we take a look at what lipids are, and what they do for us. This video was broken into two parts. For the complete Lesson 2 videos, as well as interactive exam reviews and class notes please visit us at

Human Physiology : How Does the Eye See Color? Rods and cones exist on the eye's retina, and it's the job of the cones to help the eye see color. Find out how color changes depending on its wavelength with information from a science teacher in this free video on physiology and the human body. Expert: Janice Creneti Bio: Janice Creneti has a BS in secondary science education and a BA in biology from Boston University. Filmmaker: Christopher Rokosz

Heart Physiology (Starling law: part 4/6) Heart rate and frank-starling law

14. Cardiovascular Physiology (cont.) Frontiers of Biomedical Engineering (BENG 100) Professor Saltzman describes the blood flow through the systemic and pulmonary circulatory system. More specifically, he describes, with the help of diagrams, the events that lead to blood flow in the body as a function of contraction/relaxation by specific chambers of the heart, and the effect of four valves which help direct flow. Important terms and concepts such as systole/diastole pressures, cardiac output (CO) as a function of heart rate (HR) and ejection volume (EV), and the action potential propagation that stimulates heart muscle contraction are discussed. Complete course materials are available at the Open Yale Courses website: open.yale.edu This course was recorded in Spring 2008.

Plant Physiology: Respiration () Plant Respiration - FREE TRIAL -

Heart Physiology (Ventricular filling: part 1/6) AV septum

Anatomy and Physiology (Intro) Chapter 20 podcast introducing anatomy and physiology. Tissue types, homeostasis, and feedback loop are all covered. Images from 'Biology: Concepts and Connections' (6th Ed.) by Campbell, Reece, Taylor, Simon, Dickey; Pearson Education

Vascular Physiology (Capillary: part 1/6) Blood

Plant Physiology: Phototropic Response () ****CLICK HERE for RELATED CONTENT**** Tropism - FREE TRIAL -

Anatomy & Physiology Review of Skeletal Muscle Tissue Video i recorded off a cd-rom. Sorry with the background noises, my laptop was making all sorts of weird noises at random times. Hope this helps!

Lipoprotein Physiology: Overview (1/4) Lipoprotein physiology

Mr.Ford's Anatomy & Physiology: Lesson 01:07 Body Cavities In this video we take a look at how we divide up the body as well as how the abdominopelvic cavity is divided into different areas. For the complete Lesson 1 videos, as well as interactive exam reviews and class notes please visit us at

Human Physiology : What Is a Nucleotide? Nucleotides are little components that make up DNA, and they are connected by phosphate molecules. Learn about the components of nucleotides, which includes phosphate groups, sugar molecules and nitrogen bases, with information from a science teacher in this free video on physiology and the human body. Expert: Janice Creneti Bio: Janice Creneti has a BS in secondary science education and a BA in biology from Boston University. Filmmaker: Christopher Rokosz

Lipoprotein Physiology: HDL (4/4) High-density lipoprotein

Physiology of Lipoprotein Metabolism Reducing the Atherogenic Burden Molecular Disease Branch National Heart, Lung and Blood Institute National Institutes of Health Bethesda, Maryland

Google I/O 2008 - Anatomy and Physiology of an Android Anatomy & Physiology of an Android Patrick Brady (Google) Android has been designed as a modern mobile platform that will enable applications to take full advantage of the mobile device capabilities. This session will break down the various components of the Android platform, examine how they work, and give developers a deeper understanding of the underlying technologies that drive the Android platform.

Exercise Physiology - ATP, CP etc yet more classroom craziness

Exercise physiology - oxygen uptake VO2 max...and all those shenanigans

Physiology Tour Emergent properties of the cells within the body.

15. Cardiovascular Physiology (cont.) Frontiers of Biomedical Engineering (BENG 100) Professor Saltzman talks about electrical conductivity in the heart: that is, the generation and propagation of electrical potential in heart cells. He describes the role of ion channels and pumps in transporting sodium, potassium, and calcium ions to create action potential. This propagation of signal from the sinoatrial node through different tissues, which can be replaced by a pacemaker, eventually stimulates contraction of muscle fibers throughout the heart. Next, he describes the electrocardiograph and how each wave trace corresponds to the events caused by depolarization/repolarization of different heart tissues. Complete course materials are available at the Open Yale Courses website: open.yale.edu This course was recorded in Spring 2008.

Physiology : neuromuscular junction - motor unit Check out the high definition version of this video here : blip.tv 1- The body movements are controled by muscles. 2- while contracting, the muscle is reduced in length and join closer the 2 bones on which it is inserted. 3- However,it's the nervous system that controls the muscle contraction by the means of nerves. 4- Each nerve contains thousands of nerve fibers arranged in dendrites which carry out sensory information and axons that convey motor impulses. 5- Each motor neuron innervates several muscle fibers, 6- this association define what is called a motor unit. 7- In general, the fewer the muscle fibers are in a motor unit the more the movement is precise. 8- for example in the temporalis muscle there are 1000 muscle fibers per motor unit while in the external ocular muscles there are only 5, this reflects the accuracy of the eye movements. 9- The intensity of the muscle contraction is proportional to the number of motor units recruited. 10- A neuron gives several endings that sometimes scatter throughout the thickness of a muscle, 11- each terminal is intended to stimulate a single muscle fiber in a specific place: the neuromuscular junction. 12- Just before the axon terminal, the neuron loses its myelin sheath and forms a terminal button. 13- The terminal button contains many mitochondria that provides energy and several synaptic vesicles. 14- Each vesicle contains approximately 10000 of acetylcholine molecules, the unique neurotransmitter of the neuromuscular ...

The Science of Stress Physiology Emotions Fight Flight Till 1994 we believed —a wild animal, whatever it happens to be—came through to a relay station called the thalamus, the thalamus sends the information to the cortex, or the pre-frontal cortex. What was believed was the cortex initiates an automatic knee-jerk response: Behavioural - we jump back; Physiological - we increase our blood pressure and adrenalin to fight or flight, and then an Immunological response in case the system is damaged in some way. But in fact, back in 1994, Joseph LeDoux and his team discovered this pathway to this guy called the amygdala. Now the amygdala is a key emotional centre in the brain, and what they discovered was that it was the amygdala that initiates the response, not the cortex. In fact, even more important than that, the amygdala initiates the response before the information reaches the cortex. Now, because the amygdala is there to keep us alive, it's actually not very accurate, but very high speed, and the cortex is very accurate, but relatively slow. So, we've initiated a response; activated a response before the information even reaches the cortex. Why does that matter? Well, the cortex is where we learn new things; it's where we learn how to behave. So what we call default behaviours today—and a perfect example of that would be road-rage—so we might get involved in some altercation on the road, we get very frustrated and angry with somebody, then a moment later we realise we perhaps overreacted; because that's ...

ANIMATION OF HEART THIS IS THE ANIMATION OF HEART MAINLY ABOUT CONTRACTION & RELAXATION OF CARDIAC FIBRES

Heart Physiology (Cardiac output: part 3/6) Cardiac output regulation

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Anatomy & Physiology Introduction & Survival Tips This video is the first in a series that are part of an online course in Human Anatomy & Physiology. It covers introduction to Human A&P as well as gives some insiders hints to surviving Anatomy & Physiology. To see more videos, or get access to podcasts, presentations, and exam reviews check out

13. Cardiovascular Physiology Frontiers of Biomedical Engineering (BENG 100) Professor Saltzman discusses the biophysics of the circulatory system. He begins by describing the anatomy of different types of blood vessels, and states the relationship between pressure difference (ΔP) as the driving force for fluid flow (Q) in a tube (ie, blood vessel) with some resistance R (ΔP = RQ). R can be calculated using if dimensions of the tube (L, r) and fluid viscosity (μ) are known: R = 8μL/πr4. Next, Professor Saltzman traces the blood flow through the circulatory system and explains how the body can regulate blood flow to specific regions of the body. Finally, he describes the heart and its function as the pressure generator in the system. Complete course materials are available at the Open Yale Courses website: open.yale.edu This course was recorded in Spring 2008.

The Physiology of Cardiac Output This video will discuss one of the key components of cardiovascular physiology - cardiac output.

16. Renal Physiology Frontiers of Biomedical Engineering (BENG 100) Professor Saltzman introduces the basic concepts of renal physiology. Professor Saltzman first introduces the function and anatomy of the kidney. Special attention is given to the cell types and structural aspect of the nephron, the functional unit of the kidney. Filtration, secretion of toxic waste, and reabsorption of water, ions, and nutrients through the glomerulus and various segments of the nephrons is discussed in detail. Finally, Professor Saltzman describes glomerular filtration rate as a function of pressure drop, which is regulated by afferent and efferent arterioles, to control how much volume being filtered through glomerulus. Complete course materials are available at the Open Yale Courses website: open.yale.edu This course was recorded in Spring 2008.

Human Physiology : What Is Messenger RNA? Messenger RNA is a small molecule that forms on the complementary strands of DNA and connects to amino acids. Discover how messenger RNA helps to form the protein that becomes skin and cells with information from a science teacher in this free video on physiology and the human body. Expert: Janice Creneti Bio: Janice Creneti has a BS in secondary science education and a BA in biology from Boston University. Filmmaker: Christopher Rokosz

Mr.Ford's Anatomy & Physiology: Lesson 01:06 Body Positions Body Positions in relation to Anatomical Position, is a concept that all Anatomy and Physiology students need to grasp early on in their studies. In this video we take a look at how we talk about positions on the body. For the complete Lesson 1 videos, as well as interactive exam reviews and class notes please visit us at

Mr.Ford's Anatomy & Physiology: Lesson 03:04 The Cell part 1 Knowledge of the cell is important for Human Anatomy and Physiology 1. In this video (part 1 of 3) we take a look at the nucleus of a cell, the nucleolus, and the general structure. In the follow up videos we examine in greater details the organelles found within the cell. For the complete Lesson 3 videos, as well as interactive exam reviews and class notes please visit us at

Susan Verscheure - Human Physiology Susan Verscheure, Senior Instructor in the Department of Human Physiology, talks about teaching large classes and learner-centered teaching at the University of Oregon. See more at tepblog.uoregon.edu

Interviews with 2009 Nobel Prize in Physiology or Medicine Winners Drs. Blackburn and Greider Interviews with 2009 Nobel Prize in Physiology or Medicine winners Drs. Elizabeth H. Blackburn (AACR President-Elect) and AACR member Carol W. Greider along with commentary from AACR President Dr. Tyler Jacks and Dr. Stephen Baylin.