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.
Leaf surfaces are equipped with stomata. These allow carbon dioxide to enter the leaf and oxygen to escape to facilitate photosynthesis. In addition, it helps to regulate water loss during a process called transpiration. Above 95- 99% of the water absorbed by roots of a plant is lost by the leaves through transpiration.he number of stomata per unit area on the leaf surfaces of Cleome species with the stomatal indices have been recorded in Table 1 and nature and type of stomata have been shown in Fig 1. Stomata are pores on leaf surfaces through which plants exchange C02, water vapor, and other constituents with the atmosphere.