BIO LAB

what are the atria

the receiving chambers of the heart

what are the ventricles

the discharging chambers of the heart

1

superior vena cava

2

right pulmonary veins

3

right atrium

4

right ventricle

5

inferior vena cava

6

aortic arch

7

ligamentum arteriosum

8

left pulmonary arteries

9

left pulmonary veins

10

auricle of left atrium

11

left ventricle

12

anterior interventricular artery

13

apex

1

right atrium

2

tricupsid valve

3

right ventricle

4

chordae tendineae

5

left atrium

6

mitral (bicupsid) valve

7

aortic valve

8

pulmonary valve

9

left ventricle

10

papillary muscle

11

interventricular spetum

12

epicardium

13

myocardium

14

endocardium

1

aorta

2

left pulmonary artery

3

left pulmonary veins

4

superior vena cava

5

right pulmonary artery

6

right pulmonary veins

7

inferior vena cava

8

coronary sinus

what does the right side of the heart pump

oxygen-poor blood

what is the pulmonary circuit

pathway that carries blood between heart and lungs

what does the left side of the heart pump

oxygenated blood returning from the lungs

what is the systemic circuit

blood vessels that carry blood to and from all body tissues

1

chordae tendineae

2

myocardium of left ventricle

where is the anterior interventricular artery

anterior interventricular sulcus

what does the anterior interventricular artery do

carriws 50% of blood to the heart, supplies the anterior interventricular septum and anterior walls of both ventricles

what is the coronary sinus

vessel that drains blood from the entire heart into the right atrium and receives blood from the great, middle, and small cardiac veins

trace a drop of blood starting the right atrium

1. right atrium

2. tricupsid valve

3. right ventricle

4. pulmonary valve

5. pulmonary trunk

6. pulmonary arteries

7. pulmonary capillaries

8. pulmonary veins

9. left atrium

10. mitral valve

11. left ventricle

12. aortic valve

13. aorta

what do arteries do

carry blood away from the heart

what do veins do

drain tissue and return blood to heart

what are tunics

the three layers of blood vessel walls

1-3

1. tunica intima

2. tunica media

3. tunica externa

what are arterioles

smallest arteries that lead into capillary beds

what are capillaries

vessels that allow exchange of materials between blood and tissues

what are venules

smallest veins which drain into capillary beds and merge to form veins

what is the largest artery of the body

aorta

1 and 2

1. internal carotid artery

2. external carotid artery

3

subclavian artery

4

brachiocephalic trunk

5

aortic arch

6

ascending aorta

7

coronary artery

8

abdominal aorta

9

renal artery

10 and 11

1. common iliac artery

2. internal iliac artery

12

subclavian artery

13

axillary artery

14

brachial artery

15

radial artery

16

ulnar artery

17

superficial palmar arch

1

femoral artery

2

popliteal artery

3

anterior tibial artery

4

posterior tibial artery

5

arcuate artery

1

dural venous sinuses

2

internal jugular vein

3

superior vena cava

4

hepatic veins

5

splenic vein

6

hepatic portal vein

7

renal vein

8

inferior vena cava

9

subclavian vein

10

axillary vein

11

brachial vein

12

ulnar vein

13

radial vein

14

digital veins

1

femoral vein

2

great saphenous vein

3

popliteal vein

4

posterior tibial vein

5

anterior tibial vein

6

dorsal venous arch

what is systole

ventricular contraction

what is diastole

ventricular relaxation

what causes the first heart sound (S1, “lub”)

closer of AV valves at beginning of ventricular systole

what causes the second heart sound (S2, “dup”)

closure of the semilunar valves at the end of systole

what is a pulse

alternating surges of pressure (expansion and recoil) in an artery with each contraction and relaxation of the left ventricle.