Blood Flow
by
Tehescmarts
Last updated 1 year ago
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Heart Contraction
Animation and Quiz
Caution!! Graphic! 10 min
22min Circulation
1. Pressure Gradient--high at aorta; low at vena cavae2. Heart generates pressure3. Vessels conduct and influence flow by constricting or dilating4. The autonomic nervous system changes pressure, flow and volume5. Input from brain centers and sensory receptors to the cardiovascular center in the medulla oblongata.6. Sympathetic nerves increase the heart rate and stroke volume.7. Parasympathetic nerves decrease heart rate.8. Systole is SQUEEZE; diastole is DREAMY relaxing fill.9. Normal blood pressure is about 120/80 mm Hg.10. Cardiac Output is affected by Preload, Contraction, and Afterload.11. The more the muscle is stretched, the harder it will contract--Starling's Law.12. Exercise stimulates sympathetic system to increase venous return, stretch the heart, and increases CO2.13. Smaller the diameter, the more resistance. 14. Veins have less pressure and so blood return utilizes valves, skeletal pump, and respiratory pump.15. Blood Pressure = Flow X Resistance16. Longer vessels have more resistance such as in obese people.17. Viscous blood increases resistance.
Artery Radius
Blood Vessels and Flow
Cardiac Output
Pumps Song
Circulation 2 min
Icefish Viscosity Lab
Icefish Transcript
Icefish Film
Slide Show
Circulatory Slide
Circulatory Slide
Blood Animation
Haemodynamics 2
Blood Flow Anim
Quiz
Circulatory Quiz
Path of Blood Quiz
Difficult! Quiz
Virtual Heart
Virtual Lab
Label Heart
Concept Map
Heart Transplant
2 min
Blood Flow
Causes low blood flow: 1. Damage to vascular system. 2.Narrowing of arteries. 3. Obstructed flow due to muscle thickening 4. Sugar in blood-Hi viscosity. 5. Low amount of blood
Causes high blood flow: 1. Some drugs2. Increase in cardiac output3. Dilation of skeletal vessels4. Low viscosity
Blood Flow =Blood Pressure/ResistanceLonger vessel:more resistanceHigher viscosity: more resistanceSmaller the diameter of vessel:more resistance
Blood Flow
aliza13 9 years ago
nice and informative!
lyoder27 8 years ago
Very Funtertaining
doni99 8 years ago
http://doni99.edu.glogster.com/why-be-corrupted-with-swearing/
doni99 8 years ago
Now this is what i call 'awesome!' ;)
Good on ya ms!
DJarbeau 8 years ago
This is fabulous!
Silver224 8 years ago
aweeeeeeesssssssssoooooooooooooooommmmmmmmmmmeeeeeeeeee!!!!!!!!!!!!!!!!!!!