0
In mammals and birds there's no sinus venosus instead they have the?
Wiki User
∙ 13y ago
Mammals and birds do not have a sinus venosus but rather a sinoatrial node. The sinoatrial node is a remnant of the sinus venosus and performs the function of a pacemaker for the heart.
thank god for this site :)
Wiki User
∙ 13y ago
Wiki User
∙ 14y agopeacemaker
Add your answer:
Earn +20 pts
Are goldfinches omnivores?
No. Finches are not mammals - they are birds. The differences between birds and mammals are: Birds have feathers while mammals have fur, hair or skin Birds lay eggs whilst mammals (with the exception of the monotremes) bear live young Birds do not feed their young on mothers' milk like all mammals do
Are canary birds mammals?
No. Canaries are birds, which are a class of animals all their own distinct from mammals.
What birds are considered mammals?
No birds are mammals. In fact, birds are of a different kind of category, called "aves". Some scientists say that this is just another branch of the reptiles, but some say birds are different.
How do mammals differ from birds and what adaptation's do they share?
Adaptations that birds and mammals share include the fact that they are both warm blooded, they are both vertebrates, and they both have four chambered hearts. Unlike mammals, birds are covered in feathers and all birds lay eggs. Unlike birds, mammals are covered in hair, produce milk for their young, and nearly all mammals give birth to live young (except a few species that lay eggs).
Which two vertebrates groups have a steady body temperature?
Mammals and birds.
Are birds of paradise mammals?
Of course not ...no birds are mammals !!!!!!!!!!!No, they are birds.
Are birds considered to be mammals?
Birds and mammals are mutually exclusive categories of animal. Monotremes (duckbilled platypus and echidna) are sometimes incorrectly said to be "half-bird" because they lay eggs instead of giving live birth, but they share more characteristics with mammals and are classified as such.
Why aren't birds mammals?
Bird have feathers instead of fur and do not feed their young milk.
Are eagles mammals?
No, they are birds.
Are birds the only mammals with feathers?
No. Birds are not mammals.
Are cassowaries mammals?
No. They are birds. Birds and mammals are separate classes of animal.
Are cassowary birds mammals?
No. They are birds. Birds and mammals are separate classes of animal.
Are raccoons birds?
Raccoons are not birds. Raccoons are mammals.
What are mammals differ from birds?
Mammals differ from birds as birds lay eggs, and mammals give live birth.
Are wood peckers mammals?
No. Woodpeckers are birds and birds are not mammals.
Birds have and mammals have?
birds have eggs and mammals have living babies
What are the animals eat smaller animals?
Ohhh theres many many theres: Reptiles Birds Mammals Oceanary animals Every animal group has some that eat smaller animals hope i helped :)
