Summer 2 1 A physicia subarachnoid space in the sacral regi

Summer -2 - 1. A physicia subarachnoid space in the sacral region of the spinal cord. can use lumbar puncture to withdraw cerebrospinal fluid (CSF) from the -2. The parieto-occipital fissure divides the cerebrum into two hemispheres. 3. The eight cranial nerve (vestbulocochlear (VII) contains both sensory and motor fibers 4. There are 31 pairs of spinal nerves,all of which are composed of both motor and sensory fibers. -5. The tip of the tongue reacts to sweet taste. 6. Diabetics produce an excessive amount of insulin. 7. In innermost layer of tissue lining the heart is the myocardium. 8. The more common name for the larynx is the \"voicebox.\" 9. Lymphatic capillaries, called lacteals, in the small intestine are important in the absorption of fats. 10. In the pancreas, alpha cells produce insulin, whereas beta cells produce glucagon. 11. The greater omentum is attached to the lesser curvature of the stomach and the liver 12. The falciform ligament divides the liver into right and left lobes. 13. The only organ in the digestive system that is directly attached to the anterior body wall is the liver 14. Lymph nodes are the only lymphatic organs with afferent lymphatic vessels. 15. Melanocyte-stimulating hormone (MSH) darkens skin and hair by stimulating melanocytes to manufacture the pigment melanin. 16. All atmospheric gases are equally soluble in the blood and tissue fuid. 17. The amount of air moved into or out of the lungs in quiet, relaxed breathing is called residual volume. 18. Urine is conveyed from the kidney to the bladder by way of the urethra 19. The juxtaglomerular (JG) apparatus is a specialized region of the kidney involved in blood pressure regulation. 20. The prostate gland lines just below the urinary bladder, and supplies most of the fluid content of the final semen.

Solution

1. A needle is inserted in the subarachnoid space in the lumbar spinous process of L4 i.e. the L3-L4 interface to obtain CSF. The needle is inserted just above or below the fourth lumbar vertebra as spinal cord will end a little below this region. The fourth vertebrae lie in line with the iliac crest, and are easily located.

Option: F

2. The cerebrum is divided in to two hemispheres by the longitudinal fissure. The corpus callosum joins the two hemispheres at the base. The parietooccipital sulcus or fissure separates the parietal and occipital lobes in both hemisphere and separates the precuneus and cuneus.

Option: F

3. The vestibulocochlear nerve is involved in hearing and balance. It connects the vestibular and cochlear nuclei in the ear. This nerve divides into vestibular nerve and the cochlear nerve. It provides sensory innervations required for equilibrium and hearing. It is mostly sensory in function.

Option F.

4. There are 31 pairs of spinal nerves that include:

a) 8 pairs of cervical nerves C1-8

b) 12 pairs of Thoracic nerves T1-12

c) 5 pairs of Lumbar nerves L1-5

d) 5 pairs of sacral nerves S1-5

e) 1 pair of coccygeal nerves Co1.

These nerves have both sensory and motor fibers. The CNS receives information about the trunk and limbs via spinal nerves.

Option: T

5. The ability of the tongue to taste substances depends on the receptors. Tips and edges of the tongue contain taste buds. Sweet taste is activates by sugars fructose or lactose. Sweet taste is detected at tip of the tongue, where the receptors are present.

Option: T

6. Diabetes mellitus is the condition wherein the person has high glucose in blood. Insulin, produced by beta cells of the pancreas induces conversion of glucose to glycogen. Diabetes can be type I or type II. In type I diabetes, insulin is not produced due to destruction of cells in pancreas. In Type II diabetes, production of insulin is inhibited.

Option: F

As per Chegg’s rules, only one question is to be answered.