Cardiovascular part 2

1. posteriorinterventricular artery

2. Marginal Artery

3.Circumflex artery

4.Anterior interventricular artery

4%

1. small cardiac vein

2. middle cardiac vein

3. Great cardiac vein

0.5%

10%

Technique used to visualize the inside of blood vessels.

Blood (oxygen) deficiency in a branch of the coronary artery , often due to blockage from an embolus.

Chest pain that often accompanies ischemia

(Heart Attack) Death to a portion of the heart due to ischemia.

Medulla Oblongata


Sympathetic nerve fibers to spinal cord to accelerator nerves

Medulla Oblongata


Parasympathetic nerve fibers to vagus nerve

Relaxation

Contracting

*S-A nodes fires

* right and left atrium valves are opened letting blood from atrium rush to ventricles.

*Semilunar Valves open and blood rush out of ventricles

*Ventricles Relax

Atria are relaxed, ventricles contract pumping blood into lungs and body.

AV valves are closed and semilunar valves are open

Amount of blood pumped from left ventricle to aorta per minute


=stroke volumeXbeats/minute

amount of blood pumped from left ventricle to aorta PER HEART BEAT

Approximately= 70-90 ml

approximately 75

Act of listening to heart sounds

Turbulance due to damaged vavles

Incomplete opening of heart valve

Incomplete closer of heart vavle

*Increased temperature increase heart rate

*decreased temperature decreased heart rate

Males: Slightly lower


Females: Slightly higher

* Fear and anger (epinephrine) Increase HR

*Grief - Decrease HR

Weakness in wall of artery

Lub#1- Av Valves Close


Dub#2- Semilunar valves Close