Rib

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Rib

In vertebrate

Vertebrate

Vertebrates are members of the subphylum Vertebrata, chordates with Vertebras or Vertebral columns. The grouping sometimes includes the hagfish, which have no vertebrae, but are genetically quite closely related to lampreys, which do have vertebrae....
anatomy

Anatomy

Anatomy is a branch of biology that is the consideration of the body plan. It is a general term that includes human anatomy, animal anatomy and plant anatomy ....
, ribs (Latin

Latin

Latin is an Italic language, historically spoken in Latium and Ancient Rome. Through the Military history of the Roman Empire, Latin spread throughout the Mediterranean and a large part of Europe....
costae) are the long curved bone

Bone

Bones are rigid organ that form part of the endoskeleton of vertebrates. They function to move, support, and protect the various organs of the body, produce red blood cell and white blood cells and store minerals....
s which form the ribcage. In most vertebrate

Vertebrate

Chest

The chest is a part of the anatomy of humans and various other animals sometimes referred to as the thorax....
(Greek

Greek language

Greek is an Indo-European languages native to the southern Balkan peninsula, the language of the Greek people. It forms an independent branch within Indo-European....
:???a?, Latin thorax
Thorax

The thorax is a division of an animal's body that lies between the head and the abdomen.In mammals, the thorax is the region of the body formed by the sternum, the thoracic vertebrae and the ribs....
) and protect the lung

Lung

The lung is the essential respiration organ in air-breathing animals, including most tetrapods, a few fish and a few snails. In mammals and the more complex life forms, the two lungs are located in the chest on either side of the heart....
s, heart

Heart

The heart is a muscle organ in all vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in annelids, mollusks, and arthropods....
, and other internal organ

Organ (anatomy)

In biology, an organ is a biological tissue that performs a specific function or group of functions. Usually there is a main tissue and sporadic tissues....
s of the thorax. In some animals, especially snake

Snake

Snakes are elongate legless carnivore reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears....
s, ribs may provide support and protection for the entire body.

Human anatomy
Humans have 24 ribs (12 pairs).

Nutrition Facts

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Encyclopedia

In vertebrate

Vertebrate

Anatomy

Anatomy is a branch of biology that is the consideration of the body plan. It is a general term that includes human anatomy, animal anatomy and plant anatomy ....
, ribs (Latin

Latin

Bone

Vertebrate

Chest

The chest is a part of the anatomy of humans and various other animals sometimes referred to as the thorax....
(Greek

Greek language

Lung

Heart

Organ (anatomy)

Snake

Human anatomy

Humans have 24 ribs (12 pairs). The first seven sets of ribs, known as "true ribs

True ribs

The first seven ribs are connected behind with the vertebral column, and in front, through the intervention of the costal cartilages, with the sternum; they are called true ribs or vertebro-sternal ribs....
", are directly attached to the sternum

Sternum

The sternum is a long flat bone located in the center of the chest . It connects to the rib via cartilage, forming the rib cage with them, and thus helps to protect the lungs, heart and major blood vessels from physical trauma....
through the costal cartilage. The following five sets are known as "false ribs

False ribs

The false ribs are the five sets of ribs below the top seven true ribs. Of these:* the first three have their cartilages attached to the cartilage of the rib above :...
", three of these sharing a common cartilaginous connection to the sternum, while the last two (eleventh and twelfth ribs) are termed floating rib

Floating rib

Floating ribs are four atypical ribs in the human ribcage. They are called so because they are attached to the vertebrae only, and not to the sternum or cartilage coming off of the sternum....
s (costae fluitantes) or vertebral ribs. They are attached to the vertebrae only, and not to the sternum or cartilage coming off of the sternum. Some people are missing one of the two pairs of floating ribs, while others have a third pair. Rib removal

Rib removal

Rib Removal is a surgical operation where usually the lowest ribs are removed to make the waist thinner.This surgical method has been said to have existed for aesthetic purposes during the Victorian age, but evidence is scarce....
is the surgical excision of ribs for therapeutic or cosmetic reasons.

The ribcage is separated from the lower abdomen by the thoracic diaphragm

Thoracic diaphragm

In the anatomy of mammals, the thoracic diaphragm is a sheet of muscle extending across the bottom of the ribcage. The diaphragm separates the thoracic cavity from the abdominal cavity and performs an important function in Respiration ....
which controls breathing. When the diaphragm contracts, the ribcage and thoracic cavity are expanded, reducing intra-thoracic pressure and drawing air into the lungs.

In other animals

In mammal

Mammal

Mammals are a class of vertebrate animals whose name is derived from their distinctive feature, mammary glands, with which they feed their young....
s, one generally thinks of ribs occurring only in the chest

Chest

The chest is a part of the anatomy of humans and various other animals sometimes referred to as the thorax....
. However, during the development of mammalian embryos, fused-on remnants of ribs can be traced in neck

Neck

The neck is the part of the body on many limbed vertebrates that distinguishes the head from the torso or trunk. The scientific term signifying "of the neck" is nuchal....
vertebrae (cervical rib

Cervical rib

A cervical rib is a Supernumerary Body Part rib which arises from the seventh cervical vertebra. It is a congenital abnormality located above the normal first rib....
s) and sacral

Sacrum

The sacrum is a large, triangular bone at the base of the vertebral column and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones....
vertebrae.

In reptile

Reptile

Reptiles, or members of the class Reptilia, are air-breathing, cold-blooded vertebrates that have skin covered in scale as opposed to hair or feathers....
s, ribs sometimes occur in all vertebrae from the neck to the sacrum.

The ribs of turtle

Turtle

Turtles are reptiles of the Order Testudines , most of whose body is shielded by a special bone or cartilage animal shell developed from their ribs....
s are developed into a bony or cartilagenous carapace

Carapace

A carapace is a Dorsum section of the exoskeleton or shell in a number of animal groups, including arthropods such as crustaceans and arachnids as well as vertebrates such as chelonians, order Testudines, turtles and tortoises....
and plastron

Plastron

The plastron is the nearly flat part of the shell structure of a turtle or tortoise, what one would call the belly, similar in composition to the carapace; with an external layer of horny material divided into plates called scutes and an underlying layer of interlocking bones....
.

Rib

Human anatomy

In other animals

See also