Brain Stroke, Types of, Causes, Pathology, Symptoms, Treatment and Prevention, Animation.

Brain Stroke, Types of, Causes, Pathology, Symptoms, Treatment and Prevention, Animation.

A stroke occurs when the blood supply to a certain part of the brain is reduced or interrupted. Without oxygen and nutrients from the blood, brain cells cannot function properly and eventually die. There are 2 major types of strokes: ISCHEMIC stroke caused by a BLOCKED artery, and HEMORRHAGIC stroke caused by a RUPTURED artery. …

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The Heart, Part 1 – Under Pressure: Crash Course A&P #25

Your heart, that throbbing, beating muscle, is probably the most iconic organ in your body. No other organ gets its own holiday, or as much radio play. And you’re not likely to get a love note decorated with a kidney or a spleen, or even a brain, which is really what rules the emotions. Don’t …

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Basal Ganglia: Structures & Intrinsic Connections – Brain & Nervous System | Lecturio

Welcome to this presentation on the basal ganglia. The first thing that I would like you to make note of is what are the major structures that constitute the basal ganglia. First, we have two structures that collectively constitute the striatum. One of those members is the caudate nucleus that we see here in the …

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Baroreflex Regulation of Blood Pressure, Animation.

Baroreflex, or baroreceptor reflex, is one of the mechanisms the body uses to maintain stable blood pressure levels or homeostasis. Baroreflex is a rapid negative feedback loop in which an elevated blood pressure causes heart rate and blood pressure to decrease. Reversely, a decrease in blood pressure leads to an increased heart rate, returning blood …

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Eye Floaters and Flashes, Animation.

Eye Floaters and Flashes, Animation.

From the patient’s point of view, floaters are objects that drift around in the field of vision. They may look like blobs, little worms or cobwebs that move with the eye’s movement. They seem impossible to focus on and are most visible when looking against a bright plain background such as a blue sky or …

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Endovascular Coiling for Brain Aneurysm, Animation.

Endovascular Coiling for Brain Aneurysm, Animation.

Endovascular coiling or endovascular embolization is a minimally invasive technique performed to treat brain aneurysms. The goal of the treatment is to block blood flow into the aneurysm and therefore reduce the risk of aneurysm rupturing. In this procedure, a catheter guided by a wire is inserted through the femoral artery at the groin and …

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Cardiac Output, Stroke volume, EDV, ESV, Ejection Fraction

Cardiac Output, Stroke volume, EDV, ESV, Ejection Fraction

CARDIAC OUTPUT is the amount of blood pumped by each ventricle in one minute. It is the product of STROKE VOLUME – the amount of blood pumped in one heartbeat, and HEART RATE – the number of beats in one minute. An INcrease in either stroke volume or heart rate results in INcreased cardiac output, …

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Arteriovenous malformation (AVM) and Embolization Treatment, Animation.

An arteriovenous malformation or an AVM is an abnormal formation of blood vessels connecting arteries and veins, BYPASSING the capillary system. The blood vessels of an AVM are commonly dilated and weakened due to high blood pressure and an AMV may bleed. Bleeding from an AVM may cause damage to surrounding brain tissue and result …

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Introduction to Anatomy & Physiology: Crash Course A&P #1

Introduction to Anatomy & Physiology: Crash Course A&P #1

I’d like you to take a second and really look at yourself. I don’t mean take stock of your life, which really isn’t any of my business, but I mean just look at your body. Hold up a hand and wiggle it around. Take a sip of water. Hold your breath. Sniff the air. These …

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