Lecture 12 9/27/23

Question 1

What two structures form the atrium?

Answer 1

-sinus centrum
-auricle

Question 2

What is the auricle?

Answer 2

space for extra blood that can be seen on the outside of the heart

Question 3

What is special about the intercostal arteries?

Answer 3

-connected to both the aorta and the internal thoracic artery
-cutting one does not significantly damage the blood flow to the surrounding tissue

Question 4

Which veins combine to form the brachiocephalic vein?

Answer 4

-external jugular vein
-subclavian vein

Question 5

What do the two brachiocephalic veins form?

Answer 5

cranial vena cava

Question 6

What are the first two vessels to branch off the heart?

Answer 6

left and right coronary arteries

Question 7

What is the role of the coronary arteries?

Answer 7

send blood to the heart

Question 8

What is the third branch off the aorta?

Answer 8

brachiocephalic trunk

Question 9

What is the fourth branch off the aorta?

Answer 9

left subclavian artery

Question 10

What is the first branch off the brachiocephalic trunk?

Answer 10

left common carotid artery

Question 11

What does the brachiocephalic trunk “split” into?

Answer 11

-right common carotid artery
-right subclavian artery

Question 12

How do arteries flow?

Answer 12

away from heart

Question 13

How do veins flow?

Answer 13

towards the heart

Question 14

What does the pulmonary trunk split into?

Answer 14

left and right pulmonary arteries

Question 15

What arteries branch off the aorta in the thoracic cavity?

Answer 15

intercostal arteries

Question 16

What are the four chambers of the heart?

Answer 16

-right atrium
-left atrium
-right ventricle
-left ventricle

Question 17

What are the atrioventricular valves?

Answer 17

valves between the atria and the ventricles

Question 18

What are tendinous cords?

Answer 18

cords of tissue that attach the AV valves to the ventricular walls

Question 19

What are the functions of the AV valves?

Answer 19

-allow blood flow from atria to ventricles
-prevent blood flow from ventricles to atria
-one way valves

Question 20

What is papillary muscle?

Answer 20

thickened muscular areas in the ventricular walls where the tendinous cords attach

Question 21

What is the pulmonary valve?

Answer 21

valve within the pulmonary artery that separates the artery from the RV

Question 22

What is the aortic valve?

Answer 22

valve within the aorta that separates the artery from the LV

Question 23

What is the caudal vena cava?

Answer 23

large vein structure that brings blood from the caudal body to the RA

Question 24

What is the cranial vena cava?

Answer 24

large vein structure that brings blood from the cranial body to the RA

Question 25

What is the great cardiac vein?

Answer 25

vein that brings blood back to the heart from the coronary system

Question 26

What is the coronary sinus?

Answer 26

the dilated opening of the great cardiac vein into the RA

Question 27

What is the role of pulmonary veins?

Answer 27

to bring blood from the lungs to the LA

Question 28

What is the purpose of the portal system?

Answer 28

to filter out harmful things from the blood that are picked up in the stomach

Question 29

What is a portal system?

Answer 29

a series of veins between multiple capillary beds

Question 30

What are the three unbranched arteries that shoot off the aorta?

Answer 30

-celiac artery -cranial mesenteric artery -caudal mesenteric artery

Question 31

What does the celiac artery supply?

Answer 31

stomach and spleen

Question 32

What does the cranial mesenteric artery supply?

Answer 32

intestines

Question 33

What does the caudal mesenteric artery supply?

Answer 33

intestines

Question 34

Which arteries supply the kidneys?

Answer 34

renal arteries

Question 35

Which arteries supply the gonads?

Answer 35

ovarian or testicular arteries

Question 36

Which arteries supply the back legs?

Answer 36

external iliac arteries

Question 37

Which arteries supply the pelvic cavity?

Answer 37

internal iliac arteries

Question 38

Which two veins combine to form the portal vein?

Answer 38

-cranial mesenteric vein -caudal mesenteric vein

Question 39

Which veins run from the liver to the RA?

Answer 39

hepatic veins

Question 40

Which two veins combine to form the common iliac vein?

Answer 40

-external iliac vein -internal iliac vein

Question 41

What do the two common iliac veins combine to form?

Answer 41

caudal vena cava