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lab9: circulatory

QuestionAnswer
Chondrichthyes primary respiration Gills
Chondrichthyes aortic arches Typically 5 pairs, no arch 1, arch ii-vi present
Chondrichthyes heart structure Venous Heart (1 Atrium, 1 Ventricle).
Chondrichthyes circulatory system Single circuit; Arches pass through gills for oxygenation. Venous heart. Linear
Actinopterygii primary respiration Aquatic (Gills
Actinopterygii aortic arches Primarily Arches III-VI (I & II lost or modified). The carotid arteries branch from Arch III giving oxygen to head.
Actinopterygii heart structure Venous Heart (1 Atrium, 1 Ventricle). 2 Primary Chambers (one atrium one ventricle) plus 2 Accessory Chambers (sinus venosus and conus arteriosus).
Actinopterygii circulatory system Single circuit; Non-air-breathing retain primitive condition. Venous heart. Heart pumps deoxygenated blood to gills. Arches carry blood to the gills for oxygenation before systemic flow.
Air-Breathing Actinopterygii respiration Bimodal (Gills + Lungs)
Air-Breathing Actinopterygii aortic arches Pulmonary arteries form as outgrowths of Arch VI. Arches V & VI associated with gills.
Air-Breathing Actinopterygii heart 2 complete or incomplete Atria, 1 Ventricle (with partial septation in lungfish). Spiral valve present.
Air-Breathing Actinopterygii circulatory system Bimodal heart function; shunts direct blood to lungs when breathing air; pulmonary circuit exists.
Lissamphibia (Frogs, Salamanders) respiration Bimodal (Cutaneous + Lungs/Gills)
Lissamphibia (Frogs, Salamanders) aortic arches Only Arches III (Carotid), IV (Systemic), and VI (Pulmonary) persist. Arch VI becomes pulmocutaneous in some.
Lissamphibia (Frogs, Salamanders) heart 2 Atria (full/partial interatrial septum), 1 Ventricle (typically no interventricular septum). Spiral valve present.
Lissamphibia (Frogs, Salamanders) circulatory system Double circulation (pulmonary & systemic); relies on trabeculation and spiral valve to minimize mixing in the single ventricle.
Amniota (General) respiration Aerial (Lungs)
Amniota (General) aortic arches Arches III, IV, & VI persist (Carotid, Systemic, & Pulmonary arteries).
Amniota (General) heart Varies
Amniota (General) circulatory system Two circuits (systemic and pulmonary).
amniota: aves respiration Aerial (Lungs)
amniota: aves aortic arches Only Right Arch IV retained as the single systemic artery.
amniota: aves heart Complete Dual-Pump: 2 complete Atria, 2 completely divided Ventricles.
amniota: aves circulatory system Total separation of systemic and pulmonary circuits. Right systemic arch. Vestigial Sinus Venosus.
amniota: mammal respiration Aerial (Lungs)
amniota: mammal aortic arches Only Left Arch IV retained as the single systemic artery (aorta).
amniota: mammal heart Complete Dual-Pump: 2 complete Atria, 2 completely divided Ventricles.
amniota: mammal circulatory system Total separation of systemic and pulmonary circuits. Left systemic arch. Sinus Venosus lost in adult.
amniota: testudines respiration Aerial (Lungs) / Aquatic (Diving)
amniota: testudines aortic arches Arches III, IV, & VI persist.
amniota: testudines heart 2 complete Atria, 1 Ventricle with two incomplete septa (vertical & predominant horizontal).
amniota: testudines circulatory system Shunting ability via pulmonary sphincter on Arch VI allows blood to bypass lungs while diving. Minimal mixing maintained by septa and pressure differentials.
Amniota: cocodilians respiration Aerial (Lungs) / Aquatic (Diving)
Amniota: cocodilians aortic arches Arches III, IV, & VI persist.
Amniota: cocodilians heart 2 complete Atria, 2 completely divided Ventricles. Two systemic aortae (one from each ventricle).
Amniota: cocodilians circulatory system Four-chambered heart but maintains the ability to shunt blood via the Foramen of Panizza while diving, bypassing the lungs.separate pulmonary and systemic.
Created by: Red1579
 

 



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