Cervical spinal stenosis is the narrowing of the spinal canal in the neck. The spinal canal is the open area in the bones (vertebrae) that make up the spinal column.The spinal cord is a collection of nerves that runs through the spinal canal from the base of the brain to the lower back. Stiffness, pain, numbness, or weakness in the neck, shoulders, arms, hands, or legs. 2  Balance and coordination problems, such as shuffling or tripping while walking. 3  Cervical spinal stenosis can be crippling if the spinal cord is damaged.
Its singular form is called stoma, and it means 'mouth'. Stomata function is to regulate the process of photosynthesis, transpiration, respiration, etc. In this article we are going to discuss this structure and function in plants, which is an important part of plant biology. Positioning and Structure.
If it is a submerged leaf, no stomata will be present on either side. In botany, a stoma (also stomate; plural stomata) is a tiny opening or pore, found mostly on the under-surface (epidermis) of a plant leaf, and used for gas exchange.The pore is formed by a pair of specialized parenchyma cells known as guard cells which are responsible for regulating the size of the opening. years ago. Dicotyledons usually have more stomata on the lower epidermis than the upper epidermis. As these leaves are held horizontally, upper epidermis is directly illuminated. Locating fewer stomata on the upper epidermis can then prevent excess water loss.