Which of the following protects the brain from shocks?
Which of the following protects the brain from shocks?
The correct option is B Cerebrospinal fluid
The correct option is B
Explanation of the correct option:
- CSF occupies the subarachnoid space (the space between the arachnoid mater and the pia mater) and the ventricular system around and inside the brain and spinal cord.
- The primary function of CSF is to cushion the brain within the skull and serve as a shock absorber for the central nervous system.
- CSF also circulates nutrients and chemicals filtered from the blood and removes waste products from the brain.
Explanation of the incorrect options:
Option A:
Dura mater contains a drainage system, called the dural venous sinuses, which allows blood to leave the brain and allows cerebrospinal fluid to re-enter the circulation. Hence, it is not the correct option.
Option C:
Thin elastic fibers, called the arachnoid, connect the dura mater to the pia mater, a thin membrane clinging to the surface of the brain and spinal cord. Hence, it is not the correct option.
Option D:
The main function of the cranium along with the surrounding meninges is to provide protection and structure. Hence, it is not the correct option.
Final answer: Cerebrospinal fluid protects the brain from shocks.
Cerebrospinal fluid
The correct option is B
Explanation of the correct option:
- CSF occupies the subarachnoid space (the space between the arachnoid mater and the pia mater) and the ventricular system around and inside the brain and spinal cord.
- The primary function of CSF is to cushion the brain within the skull and serve as a shock absorber for the central nervous system.
- CSF also circulates nutrients and chemicals filtered from the blood and removes waste products from the brain.
Explanation of the incorrect options:
Option A:
Dura mater contains a drainage system, called the dural venous sinuses, which allows blood to leave the brain and allows cerebrospinal fluid to re-enter the circulation. Hence, it is not the correct option.
Option C:
Thin elastic fibers, called the arachnoid, connect the dura mater to the pia mater, a thin membrane clinging to the surface of the brain and spinal cord. Hence, it is not the correct option.
Option D:
The main function of the cranium along with the surrounding meninges is to provide protection and structure. Hence, it is not the correct option.
Final answer: Cerebrospinal fluid protects the brain from shocks.
