41-8 The spinal cord ends at L1 or 2; the subarachnoid space continues to the second sacral level. Between these levels, frequently above or below L.V.5, the subarachnoid space is tapped in lumbar puncture. The needle traverses the interspinous ligament and pierces the ligamentum flavum between the laminae.
A cyst is a small sac that can grow on the skin, organs, and other body tissues. There are hundreds of different types of cysts, most of which are harmless.In some rare cases, however, these structures can be a sign of a more serious condition, such as a hormonal imbalance or cancer. cyst is a small sac that can grow on the skin, organs, and other body tissues. There are hundreds of different types of cysts, most of which are harmless.
tumor a tumor is any abnormal mass of tissue like a cyst a tumor can form in any part of the body a tumor can be benign or cancerous malignant cyst is a sac that may be filled with air fluid or other material a cyst can form in any part of the body including bones organs and soft tissues most cysts are noncancerous benign some common examples of cysts include sebaceous cysts small bumps that form just beneath the skin and ovarian cysts