Question

LABORATORY ASSESSMENT 30 Brain and Cranial Nerves PART A: Assessments Match the terms in Column A with the descriptions in column B. Place the letter of your choice in the price provided. Column A Columns a. Central sulcus b. Cerebral cortex 1. Structure formed by the crossing over of the optic nerves c. Corpus callosum 2. Part of diencephalon that forms lower walls and floor of third ventricle d. Gyrus 3. Core-shaped gland in the upper posterior portion of diencephalon e. Hypothalamus 4. Connects cerchral hemispheres f. Insula 5. Ridge ce surface of cerebrum with pia mater closely attached 3. Medulla oblongata h. Midbrain 6. Separates frontal and parietal lobes i. Optic chiasma 7. Part of brainstem between dicncephalon and pons J. Pineal gland 8. Rounded bulge on underside of brainstem k. Pons 9. Part of brainstem continuous with the spinal cord I Ventricle 10. Internal brain chamber filled with CSF 11. Cerebral lobe located deep within lateral sulous 12. Thin layer of gray matter on surface of cerebrum PART B: Assessments Complete the following statements: 1. The and the together compose the dura mater in the cranial cavity. 2. The subarachnoid space contains a protective 3. The a dural septum, is located within the longitudinal fissure between the cerebral hemispheres. 4. The superior sagittal sinus collects and contains 5. The cerebral cortex contains the matter. A2 6. Grooves on the surface of the brain are sulei, ridges on the surface are 7. The auditory areas of the brain are part of the lobe. A2 8. The vision areas of the brain are part of the lobe. 9. The left cerebral hemisphere primarily controls the side of the body. A2 327

Answer 1

LABORATORY ASSESSMENT 30 Brain and Cranial Nerves PART A: Assessments Match the terms in Column A with the descriptions in column 3. Place the womer of your choice in the pice provided. Column А a. Central sulcus b. Cerebral cortex c. Corpus callosum d. Gyrus e. Hypothalamus 1. Insula - Medulla oblongata h. Midhrain 1. Optic chiasma J. Pineal gland k. Pons I Ventricle Columns 1. Structure formed by the crossing over of the optic nerves e 2. Part of diencephalon that forms lower walls and floor of third ventricle 3. Core-shaped gland in the upper posterior portion of diencephalon с 4. Connects cerebral hemispheres d S. Ridge ca surface of cerebrum with pia mater closely attached a 6. Separates frontal and parietal lobes 7. Part of brainstem between diencephalon and pons k 8. Rounded bulge on underside of brainstem g 9. Part of brainstem continuous with the spinal cord 110. Internal brain chamber filled with CSF 11. Cerebral lobe located deep within lateral sulous 12. Thin layer of gray matter on surface of cerebrum f b RT R.

Of cercorum PART B: Assessments Complete the following statements: Periosteal layer 1. The meningeal layer and the together compose the dura mater in the cranial cavity 2. The subarachnoid spype contains a protective CSF cerebrospinal fluid Falx cerebri 3. The a dural septum, is located within the longitudinal fissure between the cerebral hemispheres. 4. The superior sagittal sinus collects and contains Blood 5. The cerebral cortex contains the Gray matter. A2 6. Grooves on the surface of the brain are sulei; ridges on the surface are Gyrus 7. The auditory areas of the brain are part of the Temporal lobe. A2 8. The vision areas of the brain are part of the Occipital lobe. 9. The left cerebral hemisphere primarily controls the right side of the body

The dural venous sinuses are formed by the three meningeal layers,

1). The outer dura mater

2). Middle arachnoid mater

3). The inner pia mater

The two layers of dura mater are,

· Periosteal layer

· Meningeal layer

The periosteal layer is the inner layer of the cranial bones (periosteum), whereas the meningeal layer is the layer continuous with the dura mater.

The cerebrospinal fluid (CSF) is secreted by the choroid plexuses (a network of blood vessels), present in the roof of the lateral ventricles of the brain.

Cerebrospinal fluid is a clear, colourless alkaline fluid present in subarachnoid space, ventricles of the brain and central canal of the spinal cord. The composition of CSF is much like similar to plasma, but its protein concentration is much less than the plasma. In contrast to the blood, it does not contain the blood cells, but contain a few lymphocytes.