Cerebrospinal fluid neuro quiz

Signs of hydrocephalus in an infant or young child include poor feeding. low activity. downward gaze of the eyes. a disproportionately large head size. All of these options

All of these options In the fetus and infant, the cranial bones have not yet fused, so excessive CSF pressure causes the ventricles, hemispheres, and cranium to expand. Signs include a disproportionately large head size for age, a large anterior fontanel, poor feeding, inactivity, and downward gaze of the eyes.

Symptoms of meningitis include neck stiffness. increased pain in an upright position. photophobia. fever. All of these options

All of these options Meningitis is inflammation of the membranes that surround the brain and/or spinal cord. Signs and symptoms include headache, fever, confusion, vomiting, and neck stiffness. Pain intensifies in the upright position, with head movement, and with sneezing or coughing. Photophobia may also be present.

What is the primary source of cerebrospinal fluid formation? Extracellular fluid leakage Intracellular fluid leakage Choroid plexus in ventricles Venous return to the fourth ventricle

Choroid plexus in ventricles The choroid plexus is a collection of cells that lines the ventricles. These plexuses produce most of the circulating CSF. Extracellular fluid leaking into the ventricles produces some CSF. There is no venous return to the ventricles. Intracellular fluid leakage would indicate damaged CNS cells and would pathologic or traumatic.

What structure is above the body of the lateral ventricle? Thalamus Hypothalamus Caudate Corpus callosum Lenticular nucleus

Corpus callosum The lateral ventricles are formed by the caudate nucleus laterally, with the tail of the caudate above the inferior horn. Below the lateral ventricle is the thalamus and above is the corpus callosum.

All of the following are consistent with an epidural hematoma except: Arterial bleeding that occurs between the skull and dura mater Signs and symptoms that gradually worsen over a prolonged period of days to months The patient presents with a worsening headache and vomiting following a blow to the head The presence of hemiparesis and Babinski's sign

Signs and symptoms that gradually worse over a prolonged period of days to months The progression of an epidural hematoma occurs over a few hours, whereas the signs and symptoms of a subdural hematoma gradually worsen over a longer period (days to months).

At what point does cerebrospinal fluid move from the ventricles to the meningeal spaces? From the fourth ventricle to the epidural area From the fourth ventricle to the subarachnoid space From the third ventricle to the epidural area From the third ventricle to the subarachnoid space

From the fourth ventricle to the subarachnoid space Cerebrospinal fluid is formed in the choroid plexuses of each ventricle. The flow of CSF goes from the lateral ventricles to the 3rd ventricle, then to the 4th ventricle. In the 4th ventricle CSF exits through foramina into the subarachnoid space between the arachnoid and pia mater. The epidural space is outside the meninges between the dura mater and bone. It contains blood vessels and fat.

Where is CSF normally found? In the subarachnoid space Between the dura and the skull In the subdural space Between the pia mater and the brain None of these options

In the subarachnoid space CSF flows from the lateral ventricles into the third ventricle via the interventricular foramina and then into the fourth ventricle via the cerebral aqueduct. After exiting the fourth ventricle, CSF enters the subarachnoid space, where it flows around the brain and spinal cord.

How does cerebrospinal fluid return to the venous system? Leaves epidural space through one way valves created by dural granulations and enters a sinus Leaves subarachnoid space through foramina in all ventricles and enters a sinus Leaves subarachnoid space through one way valves created by arachnoid granulations and enters a sinus Leaves subdural space through foramina in the fourth ventricle and enters a sinus

Leaves subarachnoid space through one way valves created by arachnoid granulations and enters a sinus Cerebrospinal fluid circulates around the brain and spinal cord suppluing water, amino acits, vitamins and ions to the extracellcular fluid and removing metabolites from the brain and spinal cord. CSF enters lymphatic circulation where it ultimately returned to venous circulation. CSF circulating in the subarachnoid space eventually moves through one way valves created by arachnoid granulations. It moves from the subarachnoid space to a sinus.

Which of the following statements is correct? The inner layer of the dura mater is attached to the arachnoid. The pia mater is a delicate membrane loosely attached to the dura mater. Extensions of the arachnoid anchor the spinal cord to the dura mater. Arachnoid trabeculae connect the arachnoid to the brain and spinal cord. The inner layer of the dura mater is attached to the arachnoid and arachnoid trabeculae connect the arachnoid to the brain and spinal cord.

The inner layer of the dura mater is attached to the arachnoid The three meningeal layers are the (1) dura mater, (2) arachnoid, and (3) pia mater. The outer layer of the dura mater is attached to the skull, with the inner layer loosely attached to the delicate arachnoid. The innermost layer, the pia mater, is tightly attached to the surface of the brain and spinal cord. Arachnoid trabeculae connect the arachnoid and pia mater.

Which of the following is(are) the function(s) of the cerebrospinal fluid (CSF) system? To provide water and certain amino acids to the extracellular fluid To supply specific ions to the extracellular fluid To provide buoyancy to the brain To provide water and certain amino acids to the extracellular fluid and to supply specific ions to the extracellular fluid To provide water and certain amino acids to the extracellular fluid and to supply specific ions to the extracellular fluid, and to provide buoyancy to the brain

To provide water and certain amino acids to the extracellular fluid and to supply specific ions to the extracellular fluid, and to provide buoyancy to the brain The CSF system works to regulate the extracellular milieu by supplying water, amino acids, and specific ions to the extracellular fluid. In addition, the buoyancy provided by the CSF protects the brain by absorbing some of the impact when the head is struck.