The spine diagram shown below, consists of many bones or vertebrae,soft discs,the spinal cord, and spinal nerves.
The spine anatomy is a complex structure. Simply put: the vertebrae, which stack like spools of thread, support the back and protect the spinal cord. In turn, the spinal cord relays essential information between the brain and the body.
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The Ligaments and Muscles
Holding the vertebrae together in a column are the ligaments and muscles, which also control back movement. The back has three natural curves which form an S-shape when viewed from the side. This helps to balance and distribute the weight of the body on the legs.
Cervical Spine Diagram
Stress in the spine is greatest in the cervical (neck) and lumbar (lower back) areas. These two regions are responsible for most of the movement in the back, allowing you to bend and twist. The thoracic spine allows little movement and therefore is injured less often. The lumbar curve of the lower spine supports the greatest body weight and is the most vulnerable to injury and pain. Your spinal column is made up of 24 vertebrae not including the Sacral or Coccygeal. They are:
7 - Seven in the neck (cervical spine)
12- Twelve in the mid-back (thoracic spine) and
5 - Five in the lower back (lumbar spine)
The spinal cord inside your spinal column, is made up of billions of nerves and is protected by bone all around it.
Its nerves branch out through openings between the vertebrae and connect to the body's internal organs, muscles, joints, ligaments, tendons and other parts.
This connection is vital for our well-being.The spine diagram below shows each of those vertebrae and indicates the functions of the spinal cord related to it.
C1: To supply blood to the head, pituitary gland, scalp, bones of the face, brain inner and middle ear, sympathetic nervous system, eyes, and ears.
C2: Eyes, optic nerves, auditory nerves, sinuses, mastoid bones, tongue, forehead, and heart.
C3: Cheeks, outer ear, face, bones, teeth, trifacial nerve, and lungs.
C4: Nose, lips, mouth, Eustachian tube, mucus membranes, and lungs.
C5: Vocal cords, neck glands, and pharynx.
C6: Neck muscles, shoulders, and tonsils.
C7: Thyroid gland, bursa in the shoulders, and elbows.
T1: Arms from the elbows down, including hands, arms, wrists and fingers; oesophagus and trachea, and heart.
T2: Heart, including its valves and covering coronary arteries; lungs; bronchial tubes.
T3: Lungs, bronchial tubes, pleura, chest, breast, and heart.
T4: Gallbladder, common duct, heart, lungs, and bronchial tubes.
T5: Liver, solar plexus, circulation (general), heart, oesophagus, and stomach.
T6: Stomach, oesophagus, peritoneum, liver, and duodenum.
T7: Kidneys, appendix, testes, ovaries, uterus, adrenal cortex, spleen, pancreas, and large intestine.
T8: Spleen, stomach, liver, pancreas, gallbladder, adrenal cortex, small intestine, and pyloric valve.
T9: Adrenal cortex, pancreas, spleen, gallbladder, ovaries, uterus, and small intestine.
T10: Kidneys, appendix, testes, ovaries, uterus, adrenal cortex, spleen, pancreas, and large intestine.
T11: Kidneys, ureters, large intestine, urinary bladder, adrenal medulla, adrenal cortex, uterus, ovaries, and ileocecal valve.
T12: Small intestine, lymph circulation, large intestine, urinary bladder, uterus, kidneys, and ileocecal valve.
L1: Large intestine, inguinal rings, and uterus.
L2: Appendix, abdomen, upper leg, and urinary bladder.
L3: Sex organs, uterus, bladder, knee, prostate, and large intestine.
L4: To prostate gland, muscles of the lower back, sciatic nerve
L5: Lower legs, ankles, feet, and prostate.
And finally, the SACRAL or Coccygeal, at the very bottom or tip of the spine.
GOOD POSTURE, STRONG MUSCLES AND FLEXIBLE LIGAMENTS
ARE ESSENTIAL IN MAINTAINING A HEALTHY BACK