All Topics  
Lumbar

 

 
   Email Print
   Bookmark   Link
 

 

Lumbar
 
 
  Topics Lumbar Topic Home

In 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 ....
, lumbar is an adjective
Adjective

In grammar, an adjective is a word whose main syntax role is to grammatical modifier a noun or pronoun, giving more information about the noun or pronoun's definition....
 that means of or pertaining to the abdominal segment of the torso
Torso

Torso is an anatomical term for the central part of the many animal bodies from which extend the neck and limbs. It is sometimes referred to as the trunk....
, between the diaphragm and the sacrum
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....
 (pelvis
Pelvis

The pelvis or pelvic girdle is the irregular bone structure located at the base of the spine . In the adult human, it is formed by the sacrum and the coccyx, the caudal part of the axial skeleton, and a pair of hip bones, part of the appendicular skeleton or human leg....
). The five vertebrae in the lumbar region of the back are the largest and strongest in the movable part of the spinal column, and can be distinguished by the absence of a foramen
Foramen transversarium

The foramen transversarium pierces the transverse processes of the seven cervical vertebrae. It gives passage to the vertebral artery and vertebral vein as well as a plexus of sympathetic nerves in each of the vertebr? except the seventh, which lacks the artery....
 in the transverse process, and by the absence of facets on the sides of the body. In most 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, the lumbar region of the spine curves outward.

The actual spinal cord
Spinal cord

The spinal cord is a long, thin, tubular bundle of neuron and glia that extends from the brain. The brain and spinal cord together make up the central nervous system....
 (medulla spinalis) terminates between vertebrae one and two of this series, called L1 and L2.






Discussion
Ask a question about 'Lumbar'
Start a new discussion about 'Lumbar'
Answer questions from other users
Full Discussion Forum



Encyclopedia


In 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 ....
, lumbar is an adjective
Adjective

In grammar, an adjective is a word whose main syntax role is to grammatical modifier a noun or pronoun, giving more information about the noun or pronoun's definition....
 that means of or pertaining to the abdominal segment of the torso
Torso

Torso is an anatomical term for the central part of the many animal bodies from which extend the neck and limbs. It is sometimes referred to as the trunk....
, between the diaphragm and the sacrum
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....
 (pelvis
Pelvis

The pelvis or pelvic girdle is the irregular bone structure located at the base of the spine . In the adult human, it is formed by the sacrum and the coccyx, the caudal part of the axial skeleton, and a pair of hip bones, part of the appendicular skeleton or human leg....
). The five vertebrae in the lumbar region of the back are the largest and strongest in the movable part of the spinal column, and can be distinguished by the absence of a foramen
Foramen transversarium

The foramen transversarium pierces the transverse processes of the seven cervical vertebrae. It gives passage to the vertebral artery and vertebral vein as well as a plexus of sympathetic nerves in each of the vertebr? except the seventh, which lacks the artery....
 in the transverse process, and by the absence of facets on the sides of the body. In most 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, the lumbar region of the spine curves outward.

The actual spinal cord
Spinal cord

The spinal cord is a long, thin, tubular bundle of neuron and glia that extends from the brain. The brain and spinal cord together make up the central nervous system....
 (medulla spinalis) terminates between vertebrae one and two of this series, called L1 and L2. The nervous
Central nervous system

The central nervous system is the part of the nervous system that functions to coordinate the activity of all parts of the bodies of multicellular organisms....
 tissue that extends below this point are individual strands that collectively form the cauda equina
Cauda equina

The cauda equina is a structure within the lower end of the spine of most vertebrates, that consists of nerve roots and rootlets from above. The space in which the cerebrospinal fluid is present is actually an extension of the subarachnoid space....
. In between each lumbar vertebra a nerve
Nerve

A nerve is an enclosed, cable-like bundle of Peripheral nervous system axons . A nerve provides a common pathway for the electrochemical nerve impulses that are transmitted along each of the axons....
 root exits, and these nerve roots come together again to form the largest single nerve in the human body
Human body

The human body is the entire physical and mental structure of a human organism, and consists of a head, neck, torso, two arms and two legs.By the time the human reaches adulthood, the body consists of close to 10 trillion Cell , the basic unit of life....
, the sciatic nerve
Sciatic nerve

The sciatic nerve is a large nerve that starts in the lower back and runs through the buttock and down the lower limb. It is the longest and widest single nerve in the body....
. The sciatic nerve runs through the back of each leg and into the feet. This is why a disorder of the low back that affects a nerve root, such as a spinal disc herniation
Spinal disc herniation

A spinal disc herniation ', incorrectly called a "slipped disc", is a medical condition affecting the Vertebral column, in which a tear in the outer, fibrous ring of an intervertebral disc ' allows the soft, central portion to hernia....
, can cause pain that radiates along the sciatic nerve (sciatica
Sciatica

Sciatica is a set of symptoms including pain that may be caused by general compression and/or irritation of one of five nerve roots that give rise to the sciatic nerve, or by compression or irritation of the sciatic nerve itself....
) down into the foot.

There are several muscle
MUSCLE

MUSCLE is public domain, multiple sequence alignment software for protein and nucleotide sequences.MUSCLE is integrated into UGENE bioinformatics tool as a plugin....
s in the low back that assist with rotation, flexibility and strength. These muscles are susceptible to injury, especially while lifting heavy objects, or lifting while twisting. A low back muscle strain can be extremely painful but will usually heal within a few days or weeks.

The lumbar portion of the spine bears the most body weight and also provides the most flexibility, a combination that makes it susceptible to injury and wear and tear over time. This is why low back pain
Low back pain

Low back pain is a common symptom of musculoskeletal disorders or of disorders involving the lumbar vertebrae. It can be either Acute , subacute or Chronic in its clinical presentation....
 is so prevalent.

See also

  • Car seat
    Car seat

    A car seat is the chair used in automobiles. Most car seats are made from cheap, but durable materials, made to withstand as much beating as possible....
     and lumbar support
  • Lumbar Puncture
    Lumbar puncture

    In medicine, a lumbar puncture is a diagnostic and at times therapeutic procedure that is performed in order to collect a sample of cerebrospinal fluid for biochemistry, microbiology, and cytology analysis, or occasionally as a treatment to relieve increased intracranial pressure....
  • Lumbar vertebrae
    Lumbar vertebrae

    The lumbar vertebrae are the largest segments of the movable part of the vertebral column, and are characterized by the absence of the foramen transversarium within the transverse process, and by the absence of facets on the sides of the body....


External links