A&PI Laboratory Report 13 2021 PDF

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Summary

Roberto Rodriguez, DHSc, MS, MD
Lab: nervous system, Spinal cord, Nerves and Meninges...

Description

A&P I – Laboratory Report 13

2021

Laboratory Assessment 28 Part A Identify the features indicated in the spinal cord cross section of figure 28.8. 1. Gray matter 2. Dorsal root of spinal nerve 3. Dorsal root ganglion 4. Ventral root of spinal nerve 5. Central canal 6. Posterior median sulcus 7. White matter 8. Anterior median fissure

Part B Complete the following statements: 1. The spinal cord gives rise to 31 pairs of ______spinal nerves_________________. 2. The bulge in the spinal cord that gives off nerves to the upper limbs is called the _____cervical______________ enlargement. 3. The bulge in the spinal cord that gives off nerves to the lower limbs is called the ______lumbar_____________ enlargement. 4. The __posterior median sulcus________________ is a groove that extends the length of the spinal cord posteriorly. 5. In a spinal cord cross section, the posterior ______horns______________ of the gray matter resemble the upper wings of a butterfly. 6. The motor neurons are found in the _anterior/ventral_______ roots of spinal nerves. . 7. The ______gray commissure_________________ connects the gray matter on the left and right sides of the spinal cord. 8. The ____central canal_______________ in the gray commissure of the spinal cord contains cerebrospinal fluid and is continuous with the cavities of the brain. 1

9. The white matter of the spinal cord is divided into anterior, lateral, and posterior ______funiculi_________________. 10. There are __8_________ pairs of cervical spinal nerves. 11. There are ____5______ pairs of sacral spinal nerves. 12. Cervical spinal nerve pair C1 originates between the occipital bone and the ___atlas____. 13. Spinal nerves L4 through S4 form a ___sacral_____________ plexus. 14. The gray matter of the spinal cord is divided into anterior, lateral, and posterior ____horns_____.

Part C Match the terms in column A with the descriptions in column B. Place the letter of your choice in the space provided. _B. Denticulate ligaments ___1. Connections from pia mater to dura mater that anchor the spinal cord ___E. Film terminale___2. Inferior continuation of pia mater to the coccyx ___C. Dura mater____3. Outermost layer of meninges __F. Pia mater____ 4. Follows irregular contours of spinal cord surface ___G. Subarachnoid space____5. Contains cerebrospinal fluid ___A. Arachnoid mater_____6. Thin, weblike middle membrane __D. Epidural space___7. Separates dura mater from bone of vertebra or skull...