A.Valves in pulmonary veins check back flow
B.Contraction of left auricle automatically closes the opening of pulmonary veins
C.Inter-auricular septum helps to close the opening
D.There is some other reason
A.Pulmonary arteries
B.Coronary arteries
C.Pulmonary veins
D.Cardiac veins
A.Two pulmonary arteries
B.Systemic arteries
C.Common carotid arteries
D.Phrenic arteries
A.Oxygen only
B.Nutrients and nitrogen wastes
C.Respiratory gases, nutrients and nitrogenous waste
D.Respiratory gases and nitrogenous wastes
A.Intracellular fluid
B.Interstitial fluid
C.Nucleoplasm
D.Lymph
A.Lingual vein
B.Mandibular vein
C.Both of these
D.None of these
A.Lingual
B.Cutaneous
C.Anterior abdominal
D.Azygos
A.Fore limits
B.Dorsal trunk region
C.Hind limbs
D.Lateral trunk region
A.Rabbit
B.Cat
C.Man
D.All of these
A.Cat
B.Man
C.Both of these
D.None of these
