Circulatory System

Question 1

Cardiac muscle is also known as what

Answer 1

myocardium

Question 2

What area recieves blood from the pulmonary veins

Answer 2

left atrium

Question 3

Where is the bicuspid valve located

Answer 3

between left atrium and left ventricle

Question 4

Where is the tricuspid valve located

Answer 4

between right atrium and right ventricle

Question 5

What type of blood is in the superior and inferior vena cavas (oxygenated or deoxgenated)

Answer 5

superior-deoxygenated inferior-oxygenated

Question 6

Where do the vena cavas empty into

Answer 6

right atrium

Question 7

What is another name for the pacemaker

Answer 7

sinoatrial node (SA)

Question 8

If the heart rate is slower than normal it is called

Answer 8

brachycardia

Question 9

Which veins carry oxygen

Answer 9

Pulmonary veins and umbilical veins

Question 10

The volume of blood pumped out by a ventricle with each heart beat is called

Answer 10

stroke volume

Question 11

Once the blood leaves the aorta name the vessels it goes through to get back to the heart

Answer 11

arteries-body tissue (capillaries)-veins-inferior+super vena cavas-right atrium (left side)
pulmonary arteries-lungs- pulmonary veins- left atrium

Question 12

Arterry structure

Answer 12

thick tunic media, smaller lumen, no valves, close to heart in terms of circulation, high pressure

Question 13

Where is the carotid vein located

Answer 13

neck

Question 14

What is the purpose of the renal vein and what vein does it empty into

Answer 14

drain oxygen depleted blood from the kidneys into the inferior vena cava

Question 15

What does the umbilical vein carry? Where to and from? What does the umbilical artery carry? Where to and from?

Answer 15

vien carries oxygenated blood from placenta to fetus

artery carries deoxygenated blood from the fetus to the placenta

Question 16

What causes the sound “lub-dup”

Answer 16

lub-AV valves closing dup-semilunar valves closing

Question 17

What causes the heart rate to increase when the sympathetic nervous system is involved

Answer 17

epinephrine and throxine hormones

Question 18

What organs are involved with the hepatic portal circulation

Answer 18

drains digestive organs, spleen, pancreas and deliver to liver

Question 19

What is the pathway of the intrinsic conduction system starting with the sinoatrial node

Answer 19

sinoatrial node (right atrium), atrioventricular node (junction of right atrium and right ventricle), atrioventricular bundle (bundle of His), bundle branches (branches located in interventricular septum), purkinje fibers (muscle of ventricular walls)

Question 20

Which artery feeds blood to the armpit

Answer 20

axillary

Question 21

Which vein drains the back of the brain

Answer 21

vertebral

Question 22

Which chamber pumps blood to the lungs

Answer 22

right ventricle

Question 23

Which chamber pumps blood to the body

Answer 23

left ventricle

Question 24

What is fibrillation? what causes it? What would doctor do if this occurs?

Answer 24

rapid uncoordinated contractions, heart cannot pump, treatment- defibbrillator due to ischemia (lack of blood supply to the heart muscles)

Question 25

What is arteriosclerosis? what causes it? where is it happening?

Answer 25

end stage of artherosclerosis blood vessels lose elasticity get scar tissue in blood vessel walls

Question 26

Explain high blood pressure. Causes. Why is it called the silent killer. How is it treated?

Answer 26

``` hypertension 140/90 or higher heart overworks caused by diet obesity heredity race and stress can cause tears in blood vessels no symptoms until too far along medication and dieting ```

Question 27

Vien structure

Answer 27

thin tunic media, larger lumen, has valves, far from heart in terms of circulation, low pressure

Question 28

Left atrium

Answer 28

blood before-pulmonary veins blood after-bicuspid valve to left ventricle oxygenated blood

Question 29

Left ventricle

Answer 29

blood before- bicuspid valve from left atrium blood after- aortic semilunar valve to aorta oxygenated blood

Question 30

Right atrium

Answer 30

blood before- vena cavas blood after- tricuspid valve to right ventricle deoxygenated

Question 31

Right ventricle

Answer 31

blood before-tricuspid valve from right ventricle blood after- pulmonary arteries deoxygenated