Spinal Cord

What is the subarachnoid space?

• The area between the dura mater and the arachnoid mater that contains blood vessels.

• The area between the arachnoid mater and the pia mater that contains cerebrospinal fluid (CSF), which cushions the spinal cord.

• The space within the brain where neurons are located.

• The outermost layer of the meninges that protects the brain.

What is a spinal nerve?

• A nerve that only carries sensory signals from the body to the brain.

• A mixed nerve that carries motor, sensory, and autonomic signals between the spinal cord and the body.

• A nerve that exclusively transmits signals from the brain to the muscles.

• A nerve that connects the spinal cord to the peripheral nervous system without any mixed signals.

What is the difference between gray matter and white matter?

• Gray matter contains myelinated axons, while white matter contains neuronal cell bodies.

• Gray matter contains neuronal cell bodies, while white matter consists of myelinated axons.

• Gray matter is found in the brain, while white matter is found in the spinal cord.

• Gray matter is responsible for transmitting signals, while white matter processes information.

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What is the cauda equina?

• A type of spinal cord injury

• A bundle of spinal nerves and nerve roots located at the lower end of the spinal cord.

• A muscle that supports the spine

• A condition affecting the brain's ability to communicate with the spinal cord.

What is the arachnoid mater?

• The outermost layer of the meninges that protects the brain.

• The middle layer of the meninges that surrounds the brain and spinal cord, providing a protective barrier.

• The innermost layer of the meninges that is in direct contact with the brain.

• A type of cerebrospinal fluid that cushions the brain.

What is the role of cerebrospinal fluid (CSF)?

• Cerebrospinal fluid (CSF) protects the brain and spinal cord by acting as a cushion, providing buoyancy, and removing waste.

• Cerebrospinal fluid (CSF) helps in the production of hormones in the brain.

• Cerebrospinal fluid (CSF) serves as a nutrient source for brain cells.

• Cerebrospinal fluid (CSF) is responsible for transmitting electrical signals between neurons.

What is the significance of the spinal cord's segmental organization?

• It allows for the production of cerebrospinal fluid.

• It enables the spinal cord to regenerate after injury.

• It allows for localized control of motor and sensory functions.

• It connects the brain to the peripheral nervous system.

What is the role of the ventral horn in the spinal cord?

• The ventral horn contains sensory neurons that process touch and pain signals.

• The ventral horn contains motor neurons that send signals to skeletal muscles, facilitating movement.

• The ventral horn is responsible for the production of cerebrospinal fluid.

• The ventral horn regulates the autonomic functions of the body.

What is the function of the denticulate ligament?

• To anchor the spinal cord to the dura mater, providing stability.

• To connect the vertebrae to each other.

• To protect the spinal cord from injury.

• To facilitate the movement of the spinal cord during flexion.

What is the role of the dorsal root ganglion?

• It contains the cell bodies of sensory neurons that transmit information to the spinal cord.

• It is responsible for motor control of the limbs.

• It regulates blood flow to the spinal cord.

• It serves as a protective barrier for the spinal cord.