Falls are the most common cause of traumatic brain injury, and falling poses an especially serious risk for older adults. When a senior sustains a traumatic brain injury in a fall, direct effects of the injury may result in long-term cognitive changes, reduced ability to function and changes in emotional health.
Asexual reproduction is by means of spores produced in sporangia borne on the hyphae. Zygomycota get their name from the production of thick-walled sexual structures called zygosporangia, which can remain dormant for long periods.
When two opposite mating hyphae meet, they produce structures called progametangia. Cell walls form to separate the tips of the progametangia into gametangia. Plasmogamy occurs between the two gametangia forming a zygote. Nuclear fusion takes place within the zygote.he cell walls of the hyphae are made of chitin, a nitrogen containing polysaccharide that is strong but flexible. The cytoplasm is multinucleate and the hyphae may have septa, which are cross-walls used for more strength. Fungi can grow rapidly because of the structure of their mycelium.