How is Blood pressure regulated? How do cardiac output and peripheral resistance fit into the equation? What are the negative effects of hypertension (high blood pressure). I explore these concepts and more in this video

In this episode, I talk about how the Pacemaker Potential results in the signal that causes the heart to beat. I show how the greater conductance for Sodium ions in the Pacemaker Cells in the S.A. Node cause the cells to depolarize,...

In this episode, I discuss the effect of Adrenaline and Acetylcholine on heart rate. Adrenaline speeds it up and Acetylcholine slows it down. They both have their effect by modifying the conductance for ions such as Sodium, Potassium and...

In this video, I talk about some of the things the body does to regulate stroke volume. I talk about the skeletal muscle pump and how that increases venous returns and about how the increased venous return results in a stronger...

In this video, I talk about the isovolumetric contraction of the ventricles. Once the signal travels to the ventricles, the ventricles contract. However, the valves remain closed until the pressure builds up high enough to open those...

In this video, we cover hypertension. We're going to deal with things like Cardiac Output, peripheral resistance, stroke volume and heart rate, and talk about how those values are related to blood pressure. We also deal with the symptoms...

Holter monitors is a ECG/EKG device that you can wear throughout the day to track your heart activity. A doctor might have you use one for 24 hours to be able to determine if there are any abnormalities with your heart...

In this episode, I talk about the divisions of the nervous system and deal with terms like the Central and Peripheral Nervous Systems, Brain and Spinal Cord, Somatic and Autonomic Nervous System, Sympathetic and Parasympathetic Nervous...

The nervous system is the control center of the body. But how does it actually work? In this video, we discuss what the nervous system does, the divisions of the nervous system, and how certain functions (like vision and reflexes) work.

The circulatory system, like every other system in the body, is very important. And when there are problems with your cardiovascular system, your doctor may prescribe various medications to help. Let's take a look at five kinds of...

NASA Astronaut Jessica Meir talks about her path to becoming an astronaut, her education in biology and space, her research studying marine mammals and birds in Antarctica, and her training to prepare for her first space mission. HWHAP...

In this video we look at the reasons why performers use peds and show a confession from a drug cheat. <br/>
The drugs studied in this <br/&g<br/>t;video<br/> are:
EPO
Blo<br/>od doping
Anabolic Agents
Beta blockers
Diuretics

In this playlist, we discuss clinically relevant EKG patterns. This video specifically covers supraventricular tachycardia (and its basic mechanism).

Main organs and nerves of the nervous system.

In this video, we explore the basic mechanisms of drug interactions (inhibition and induction), using examples with cytochrome P450 and two drugs, drug A and drug B.

In this video, I discuss the basics of cardiac output (CO or Q) for anatomy & physiology.

This video explores five fun facts about The Heart.

In this video, I do a set of problems (given some data) in which we calculate Pulse Pressure, Mean Arterial Pressure, Stroke Volume, Ejection Fraction, Cardiac Output, and Total Peripheral Resistance.

Anatomy and function of the peripheral nervous system.

For years, researchers have struggled to understand how emotions are formed and processed by the brain. Now, neuroscientist Kevin LaBar and his graduate students at Duke University are using a virtual reality room to study how the brain...

Autonomic innervation of the heart seen from the anterior view of open thorax.

In this GCSE PE Paper 1 topic I go through the definitions of the different volumes of the heart and try to explain the differences that an athlete would have over a sedentary person

Monitoring Heart Rate

In this live-action program viewers will learn that cardiovascular activity is any action that elevates your heart rate for an extended period of time. Students will come to understand that changes in our cardiovascular system occur when...