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Why are there 31 pairs of spinal nerve yet you only have 30 vertebrae?
There are 31 pairs of spinal nerves because the first cervical nerve exits above the first cervical vertebra. The remaining spinal nerves exit below their corresponding vertebrae. Therefore, there is one more pair of spinal nerves than there are vertebrae in the spinal column.
What makes the white matter of the spinal cord appear white?
The white matter of the spinal cord appears white because it is made up of nerve fibers covered in a fatty substance called myelin. This myelin gives the nerve fibers a white color, hence the name "white matter."
The layer of the embryo gives rise to the tissues of the nervous system by?
The ectoderm layer of the embryo gives rise to the tissues of the nervous system through a process called neurulation. During neurulation, the neural tube forms from the ectoderm, which eventually gives rise to the brain and spinal cord. The cells within the neural tube differentiate into various types of neural cells that make up the nervous system.
Why is the white matter of the spinal cord white?
The white matter of the spinal cord appears white due to the myelin sheaths surrounding the axons of neurons. Myelin is a fatty substance that acts as an insulator, allowing for faster transmission of nerve impulses. The high lipid content of myelin gives the white matter its color.
What is a neural vessicle?
These are the vessicles in the terminal button that contain the neurotransmitters.
Which plexus gives rise to the sciatic nerve?
The sacral plexus gives rise to the sciatic nerve. It is formed by the ventral rami of spinal nerves L4-S4 and is the largest nerve in the body.
What is the Network of spinal nerves that supplies the pelvis and legs?
The network of spinal nerves that supplies the pelvis and legs is known as the lumbosacral plexus. It is formed by the lower lumbar and sacral spinal nerves and gives rise to various nerves that innervate the lower extremities, including the sciatic nerve, femoral nerve, and obturator nerve. These nerves play a crucial role in motor and sensory functions of the pelvis and legs.
Which plexus supplies motor movement to the posterior of legs and thighs?
The sacral plexus supplies motor movement to the posterior of the legs and thighs. It is formed by the lumbosacral spinal nerves and gives rise to nerves like the sciatic nerve, which innervates many muscles in this region.
Which cord of the brachial plexus gives the radial nerve?
The radial nerve is derived from the posterior cord of the brachial plexus, which is formed by the fusion of the posterior divisions of the upper, middle, and lower trunks of the brachial plexus.
Each of the thirty-one segments of the spinal cord gives rise to a pair of?
Spinal nerves
What gives messages to the brain?
Spinal cord
What gives the spinal cord longitudinal support?
the filum terminale which extends from the conus medullaris.
What is power supply?
If it is a computer power supply it is the box that gives the computer its power from the outlet.
Which device gives the power supply in computer?
SMPS(switch mode power supply)
How do you reflexes help you?
the impulse from the stimulus is processed in the spinal cord and gives the response immediately they protect you
What are the functions of fructose?
It gives supply of quick energy
What is the significance of the spinal cord enlargement?
There are two the cervical and the lumbar. They are enlarged because the cervical gives rise to nerves in the upper limbs and lumbar in the lower limbs thus they have more nerves running to and from which accounts for the enlargements.
