Lecture 12 9/27/23 Flashcards
What two structures form the atrium?
-sinus centrum
-auricle
What is the auricle?
space for extra blood that can be seen on the outside of the heart
What is special about the intercostal arteries?
-connected to both the aorta and the internal thoracic artery
-cutting one does not significantly damage the blood flow to the surrounding tissue
Which veins combine to form the brachiocephalic vein?
-external jugular vein
-subclavian vein
What do the two brachiocephalic veins form?
cranial vena cava
What are the first two vessels to branch off the heart?
left and right coronary arteries
What is the role of the coronary arteries?
send blood to the heart
What is the third branch off the aorta?
brachiocephalic trunk
What is the fourth branch off the aorta?
left subclavian artery
What is the first branch off the brachiocephalic trunk?
left common carotid artery
What does the brachiocephalic trunk “split” into?
-right common carotid artery
-right subclavian artery
How do arteries flow?
away from heart
How do veins flow?
towards the heart
What does the pulmonary trunk split into?
left and right pulmonary arteries
What arteries branch off the aorta in the thoracic cavity?
intercostal arteries
What are the four chambers of the heart?
-right atrium
-left atrium
-right ventricle
-left ventricle
What are the atrioventricular valves?
valves between the atria and the ventricles
What are tendinous cords?
cords of tissue that attach the AV valves to the ventricular walls
What are the functions of the AV valves?
-allow blood flow from atria to ventricles
-prevent blood flow from ventricles to atria
-one way valves
What is papillary muscle?
thickened muscular areas in the ventricular walls where the tendinous cords attach
What is the pulmonary valve?
valve within the pulmonary artery that separates the artery from the RV
What is the aortic valve?
valve within the aorta that separates the artery from the LV
What is the caudal vena cava?
large vein structure that brings blood from the caudal body to the RA
What is the cranial vena cava?
large vein structure that brings blood from the cranial body to the RA
What is the great cardiac vein?
vein that brings blood back to the heart from the coronary system
What is the coronary sinus?
the dilated opening of the great cardiac vein into the RA
What is the role of pulmonary veins?
to bring blood from the lungs to the LA
What is the purpose of the portal system?
to filter out harmful things from the blood that are picked up in the stomach
What is a portal system?
a series of veins between multiple capillary beds
What are the three unbranched arteries that shoot off the aorta?
-celiac artery
-cranial mesenteric artery
-caudal mesenteric artery
What does the celiac artery supply?
stomach and spleen
What does the cranial mesenteric artery supply?
intestines
What does the caudal mesenteric artery supply?
intestines
Which arteries supply the kidneys?
renal arteries
Which arteries supply the gonads?
ovarian or testicular arteries
Which arteries supply the back legs?
external iliac arteries
Which arteries supply the pelvic cavity?
internal iliac arteries
Which two veins combine to form the portal vein?
-cranial mesenteric vein
-caudal mesenteric vein
Which veins run from the liver to the RA?
hepatic veins
Which two veins combine to form the common iliac vein?
-external iliac vein
-internal iliac vein
What do the two common iliac veins combine to form?
caudal vena cava
