The term "pneumocephalus" refers to the condition in which air is present in the cranial cavity. 
What happens in pneumocephalus?
- Increased intracranial pressure causes tension pneumocephalus, a neurosurgical emergency that can cause headaches, seizures, loss of consciousness, and even death. 
- Clinically separating the two entities is difficult but essential.
- Tension pneumocephalus following skull base surgery was found to be a rare phenomenon with just eleven cases described, according to a survey of the literature on PubMed/MEDLINE. 
- After treatment, the majority of patients experienced full symptom relief. 
- Following skull base surgery, tension pneumocephalus is a potential complication that clinicians should be aware of. 
- An understanding of imaging characteristics and a high level of suspicion are necessary for accurate diagnosis. Rapid management is essential to avoid potentially disastrous effects.
Learn more about human skull with the help of the given link:
brainly.com/question/4537715
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Bacteria that change nitrogen gas from the atmosphere into solid nitrogen usable by plants are called nitrogen-fixing bacteria. These bacteria are found both in the soil and in symbiotic relationships with plants.
        
             
        
        
        
Answer:
Humans have 23 pairs of chromosomes--22 pairs of numbered chromosomes, called autosomes, and one pair of sex chromosomes, X and Y. Each parent contributes one chromosome to each pair so that offspring get half of their chromosomes from their mother and half from their father.
Explanation:
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