Spinal nerves
The spinal nerves attach to the spine at 31 different levels, corresponding to the segments of the spinal cord. These segments are categorized into cervical, thoracic, lumbar, sacral, and coccygeal regions. Specifically, there are 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal spinal nerve pairs. Each spinal nerve emerges from the spinal cord and innervates specific regions of the body.
Each point can be connected to every other point. That gives you 10 x 9. However, since this counts each line segment twice, this result should be divided by 2.
Perpendicular line segments are line segments that cross with each other and form angles of 90 degrees.
The area of skin innervated by a single spinal nerve is called a dermatome. Each spinal nerve corresponds to specific segments of the skin, and dermatomes can help in diagnosing certain medical conditions by identifying areas of sensory loss or abnormal sensation. Understanding dermatomes is essential in clinical practice, especially in pain management and neurological assessments.
15 body segments.
They are situated on the dorsal root of each spinal nerve. (:
When 2 line segments are parallel to each other. If the lines did keep on going they would never touch each other
spinal nerve
Polygon
A recangle has 4 line segments. (Each side is a line segment).
nerve plexusesThe spinal nerves emerge from the spinal cord at the brain stem, and between each vertebrae.
plexus