lab 2- circulatory and respiratory system Flashcards
(14 cards)
what are the 7 parts of a shark heart?
-pericardium
-sinus venosus
-atrium
-ventricle
-coronary artery
-conus arteriosus
-semilunar valves
what are the branchial arteries that connect to the shark heart?
-ventral aorta
-afferent branchial arteries (1-5)
what is in the pharyngeal cavity that is a part of the respiratory system in sharks?
-spiracle
-gill chambers
-gill slits
what are the 6 structures of the gill arches in sharks?
-gill arch cartilage
-gill rakers
-gill rays
-interbranchial septa (4)
-gill filaments
-holobranch (full) and hemibranch (half)
what are the 5 types of branchial and anterior arteries that make up the respiratory system in sharks?
-efferent branchial arteries (4)
-collector loop
-paired dorsal aortae
-dorsal aorta
-subclavian arteries (bring blood to pectoral fins)
what is the sinus venosus and what does it do?
-an accessory chamber of the heart with thin walls
-expands and accommodates blood flow
what is the atrium and what does it do?
-a main chamber of the heart with thin walls
-expands to accommodate blood flow and contracts weakly to generate blood pressure
what is the ventricle and what does it do?
-a main chamber of the heart with thick walls
-contracts strongly to generate high blood pressure
what is the conus arteriosus and what does it do?
-an accessory chamber of the heart with thick walls
-maintains a constant blood pressure and flow
what is the ventral aorta and what does it do?
-a blood vessel
-carries blood away from the heart
what are valves and what do they do?
-internal structures
-prevent blood from flowing backwards
what type of blood is in the sharks heart?
unoxygenated blood
where does the blood go when it exists the heart?
to the gills then body then back to the heart
is a sharks heart single circuit?
yes
