<span>The gum is probably lodged in the right primary bronchus. The right primary bronchus is an airway directly connected to the right lung. Bronchi are primarily responsible for moving air into the lungs, so when Keri choked on the gum, the gum would have blocked the air passage way required to breathe.</span>
The body can defend itself from pathogens using white blood cells, the respiratory system, and digestive system. White blood cells fight against the pathogens by ingesting them. Certain white blood cells called lymphocytes produce antibodies that destroy pathogens by finding antigens, the foreign chemicals released by the pathogen. The respiratory system defends the body from pathogens each time you sneeze or cough. Cilia and mucus also protect the body by trapping dirt and other particles. The digestive system destroys pathogens with saliva, mucus, enzymes, and stomach acid.
Answer:
A. maintenance of axons is not a cellular activity associated with microtubules.
Explanation:
Microtubules are hollow, bead-like, tiny tubular structure that helps cells maintain its shapes. Together with microfilaments and intermediate filaments, they form part of the cell's cytoskeleton. Microtubules also contributes to the cell movement or cytokinesis that includes muscle contractions in muscle cells. Microtubules also replicated chromosomes to opposite ends of a cell during cell division. Microtubules also contribute to the parts of the cell that help it move and are structural elements of cilia, centrioles and flagella. A bundle of microtubules makes up an axonemal structure of cilia and flagella.
