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Why are there 31 pairs of spinal nerve yet you only have 30 vertebrae?
Wiki User
∙ 13y ago
You have 33 vertebrae. (8) Cervical, (12) Thoracic, (5) Lumbar, (5) Sacral, (3) Coccygeal. However, the coccygeal only gives off 1 coccygeal n.
8+12+5+5+1 = 31 spinal nerves
Wiki User
∙ 13y ago
Wiki User
∙ 14y agowhy there are eight cervical nerve roots, yet only seven cervical vertebrae?
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Which pairs of ribs are known as floating ribs?
Lower most two pairs of ribs (11th and 12th) are known as floating ribs because they are only attached to vertebrae but not to the sternum.
Why are there eight cervical nerve roots?
There are 8 cervical nerves because the first 7 nerves exits on the upper part of the vertebrae making up 7 nerves but then on the 7th vertebrae there's another nerve that exits below the vertebrae thus making up 8 cervical nerves from 7 cervical vertebrae.
What is mixed neuron?
Mixed nerve is a nerve that carry all the motor function, sensory function and the autonomic function in a single fiber. Spinal nerve is the example of the mixed nerve. Some of the Cranial nerve on the other hand is not the mixed nerve as it only has one property which is either sensory or motor function. http://www.answers.com/main/ntquery?s=spinal+nerve&gwp=13
Which type of vertebra has facets that articulate with the tubercle of the ribs?
The thoracic vertebra
Another names for neck bones?
The only bones (vertebrae) in your neck are from the spinal column. These are better known as the Cervical vertebra, of which you have seven, medically speaking they are labelled C1 - C7.
How many pairs of spinal nerves are in the spinal cord?
There are 31 pairs of spinal nerves in the spinal cord.The human peripheral nervous system has 31 pairs of spinal nerves.31there r 31 spinal nerves in a body31There are 31 total spinal nerve pairs8 pairs are cervical nerves12 pairs are thoracic nerves5 pairs are lumbar nerves5 pairs are sacral nervesI know that only adds up to 30. I don't know what the other pair is.31 pairs
Can Association nerve cells are found in the spinal cord?
Yes. Association nerve cells are found only in the spinal cord and brain.True
Association nerve cells are located in the brain and where else?
Yes. Association nerve cells are found only in the spinal cord and brain.True
How many spinal nerves are there in coccyx?
only 1 nerve
Why do i have 31 spinal nerves and only 30 spinal bones?
There are 7 cervical vertebrae and 8 cervical spinal nerves. This explains why you have 31 spinal nerves relative to the 30 vertebral bones.
Spinal nerve roots which contain only motor neuron axons?
the what? root of a spinal nerve consists of motor neuron axons
The adult spinal cord extends only to which vertebral level?
The spinal cord ends between the 1st and 2nd vertebrae.
What part of a spinal nerve contains only efferent fibers?
The ventral root of the spinal nerve has the efferent fibers and the dorsal root has the afferent. Prior to joining each other in the spine they each consist of only those fibers.
The part of a spinal nerve that contains only sensory neurons is the?
The part of a spinal nerve that contains only sensory neurons is called the ventral root. There's also the axons of motor neurons and axons of sensory neurons.
What are the 31 spinal nerves called?
The proper name is Mixed Spinal Nerve.They do not have individual names, however. They are referred to by their number, with number one just above the first rib and the 31st going through the foramen between sacral 4 & 5.
How many vertebrae are in a spinal cord?
There is only one spinal cord in the human body. The human spinal column is made up of 33 bones - 7 vertebrae in the cervical region, 12 in the thoracic region, 5 in the lumbar region, 5 in the sacral region and 4 in the coccygeal region
How might biceps-jerk and triceps-jerk reflex help to locate the site of damage in a patient with a neck injury?
the biceps is supplied by the C5,C6 nerve root and the triceps by the C7 nerve root. by testing these muscles with the reflex process, we can know what nerves are damaged at the neck level, and by knowing the roots, the vertebrae level of the neck injury
