Nation World News Animals are divided into several classes, one of which is mammals. Mammals are known as mammals. However, do you know what are the characteristics of mammals?
The characteristics of mammals are:
- have fur or hair
- hot blooded
- have breast and mammary glands
- lower jaw attached to the skull
- There are four types of teeth that can be changed once in a lifetime
- Have a Big Mind with the Neocortex
- There are three bones in the middle ear
- has a four chambered heart
- have a diaphragm
- red blood cells do not have a nucleus
have fur or hair
The characteristics of mammals are fur or hair that covers the whole body or part of the body.
The fur or hair provides protection against cold, mechanical injury, camouflage as well as sensing in mammals.
However, some mammals have evolved to adapt to their surroundings.
For example, whales that only have fins when they are embryonic, or pangolins that fold their fins into hard scales.
All mammals are warm-blooded or endothermic animals. That is, they are vertebrates that can regulate their own body temperature balance.
Mammals can generate their own body heat without relying on heat from the environment. Meanwhile, they can release heat through their sweat glands.
have breast and mammary glands
Features of mammals lactating their babies and having mammary glands.
reported from thought cum, Mammalian mammary glands are modified sweat glands that are enlarged, ducts, and glandular tissue that secrete milk through the nipples.
lower jaw attached to the skull
Mammals have a distinctive lower jaw because it has a hinge that is attached directly to the skull.
This feature is called dentary and is not found in other vertebrates. The shape of the teeth allows mammals to bite, chew and grind their food.
There are four types of teeth that can be changed once in a lifetime
The teeth of mammals are different from those of other vertebrates. While other vertebrates have only one type of teeth, mammals have four types of teeth: incisors, canines, premolars, and molars.
Mammalian teeth can only be changed once in a lifetime. When they are young, the milk teeth of mammals are small.
However, as you get older, these teeth will be replaced by bigger and stronger permanent teeth.
Have a Big Mind with the Neocortex
reported from biology libratexMammals have a large brain with a complex network and covering called the neocortex.
This structure makes the mammalian brain a more complex function than that of other animals.
There are three bones in the middle ear
The next characteristic of mammals is that they have three bones in the middle of the ear, namely the incus, malleus and stapes.
These three bones form chains that work together to transmit sound waves. This improves the hearing ability of mammals.
has a four chambered heart
The next characteristic of mammals is that they have a four-chambered heart consisting of a right ventricle, left ventricle, right atrium and left atrium.
have a diaphragm
Reporting from Encyclopdia Britannica, mammals also have a muscular diaphragm that separates the heart and lungs from the abdominal cavity.
blood cells do not have a nucleus
The next characteristic of mammals is the presence of red blood cells that do not have a nucleus or do not have a nucleus.
Red blood cells release their nucleus and some of their cell organelles to bind and carry more oxygen