are tails and extension of the spine?
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The tail is an important part of the canine anatomy and is actually an extension of the spine. The bones of the tail (vertebrae) are bigger at the base and get smaller toward the tip. Soft discs cushion the spaces between the vertebrae and allow flexibility.
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Yes, sea turtles have tails. In fact, once sea turtles reach sexual maturity, the size of the tail can be used to reliably distinguish between male and female sea turtles. Males develop much longer tails – which may extend past their rear flippers – whereas females tails remain much shorter.
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“Lizards are incredible in their ability to self-amputate their tail when they encounter a predator,” Higham said. “The tail, containing a portion of the spinal cord, is voluntarily detached by muscular contractions that break the tail at a weak point within a single vertebra.
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Extension Spinal extension is a movement that lengthens the spine upwards (axial extension) and backwards. Otherwise known as backward bends (or simply backbends) in yoga, spinal extension stretches and strengthens the spine, particularly opening up the thoracic spine and the muscles of the chest and shoulders.
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Tailbone pain — pain that occurs in or around the bony structure at the bottom of the spine (coccyx) — can be caused by trauma to the coccyx during a fall, prolonged sitting on a hard or narrow surface, degenerative joint changes, or vaginal childbirth.
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Pain in your coccyx is called coccydynia. Pain from an injured tailbone can range from mild to intense. The pain can get worse when you sit down, stand up from a chair, or when you lean back while sitting. You can also feel soreness when you use the bathroom or have sex.
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Back extension exercises (sometimes also called hyperextensions) can strengthen lower back muscles. This includes the erector spinae, which supports the lower spine. Back extensions also work the muscles in your butt, hips, and shoulders. If you have low back pain, back extension exercises might provide relief.
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Central Nervous System (CNS) The spinal cord, which originates immediately below the brain stem, extends to the first lumbar vertebra (L1). Beyond L1 the spinal cord becomes the cauda equina (see below). The spinal cord provides a means of communication between the brain and peripheral nerves.
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The cauda equina (from Latin horse's tail) is a bundle of spinal nerves and spinal nerve rootlets, consisting of the second through fifth lumbar nerve pairs, the first through fifth sacral nerve pairs, and the coccygeal nerve, all of which arise from the lumbar enlargement and the conus medullaris of the spinal cord.
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['8 cervical (C1-C8) nerves emerge from the cervical spine (neck)', '12 thoracic (T1-T12) nerves emerge from the thoracic spine (mid back)', '5 lumbar (L1-L5) nerves emerge from the lumbar spine (lower back)', '5 sacral (S1-S5) nerves emerge from the sacrum (the triangular bone at the base of the spine)']
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The spine normally curves at the neck, the torso and the lower back area. When the spine curves too far inward, the condition is called lordosis or swayback. Lordosis can cause pain that sometimes affects the ability to move. It is usually found in the lower back.
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Sixth lumbar vertebrae in your spine are uncommon, but far from extraordinary. About 10% of the population has an extra bone in this region, and while additional vertebrae don't typically affect your health, they can complicate treatment for spinal cord injuries.
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The coccyx, commonly known as the tailbone, is below the sacrum. Individually, the sacrum and coccyx are composed of smaller bones that fuse (grow into a solid bone mass) together by age 30. The sacrum is made up of 5 fused vertebrae (S1-S5) and 3 to 5 small bones fuse creating the coccyx.
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Rays may have one or two spines in their tail that they use in self-defense. The spines are modified dermal denticles that have spongy, venomous tissue inside. A stingray that is surprised can whip its tail into a perceived threat. The spine stays behind and poisons the victim with its venom.
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DEAR MASON: The curly tail is the result of a spinal deviation. Vertebrae (the bones that make up the spine) are wedge-shaped, and since dogs' tails are both bone and cartilage, pug tails will have a natural curl. Breeders have turned a deficit into an asset, and the “breed standard” for pug dogs is for a curled tail.
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The spine, also known as the vertebral column or spinal column, is a column of 26 bones in an adult body — 24 separate vertebrae interspaced with cartilage, and then additionally the sacrum and coccyx.
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Do animal's tails count as limbs? Only if they are jointed or prehensile (capable of grabbing). So some monkey tails would fit the definition, along with certain mice and other creatures, but most tails in the animal kingdom would not.