The brain and spinal cord are protected by the

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BlackTom AI · Accepted Answer

The question asks which structure protects the brain and spinal cord. 
Option 1: scalp. While the scalp covers the skull and provides protection to the head, it is not the primary protective covering of the brain and spinal cord. It sits superficial to the skull bones and does not encase the CNS itself. 
Option 2: aponeurosis. This refers to the galea aponeurotica in the scalp, a tough connective tissue layer involved in scalp movement, not a protective covering of the CNS. It does not directly surround or shield the brain and spinal cord. 
Option 3: ligamentum. This term by itself is vague (as in ligamentum nuchae or other ligaments) and does not denote a meningeal membrane. Ligaments generally connect bone to bone or cartilage to bone, providing support, but they do not encase the CNS. 
Option 4: dura mater. This is one of the meninges, the protective membranes that enclose the brain and spinal cord. The dura mater is the outermost, tough layer that provides substantial protection and helps form the dural sac around the spinal cord. It is specifically associated with safeguarding the CNS from injury and infection. 
In summary, options 1–3 describe structures related to superficial protection or connective tissue, not the actual protective coverings of the CNS, whereas option 4 correctly identifies the dura mater as the protective layer surrounding the brain and spinal cord.

Anatomy and Physiology Systems I (1016MSC_NA_3251) EOT Practice Exam (ONLINE)

The brain and spinal cord are protected by the

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Anatomy and Physiology Systems I (1016MSC_NA_3251) EOT Practice Exam (ONLINE)

The brain and spinal cord are protected by the

查看解析

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类似问题

____________________ and the __________________ are extensions of pia mater.

Question at position 44 Which of the following is true regarding the dura mater? It is the innermost layer of the meninges.It is tightly attached to the brain. It is the primary location of CSF circulation.It contains large veins within its folds.

The innermost meningeal layer is called the:

Which of the following shows the correct order of meningeal layers of the brain (from closest to the outermost layer)

The most delicate of the meninges consists of elastic and collagen fibers and is known as the

During brain surgery, surgeons must cut through the scalp and a thick, leathery layer of the meninges in order to reach the brain. What is the name of this layer?

What meninge or cistern is number 1?

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__ and the are extensions of pia mater.