Lungs are respiratory organs located in the thoracic cavity. Lungs consist of lobes. Right lung consists of three lobes, whereas left lung consists of two lobes. Lobes are further divided into bronchopulmonary segments. The right and left lobes of the lungs attach to the right and left bronchus respectively. The bronchus is further divided into many bronchioles that consist of alveoli. A bunch of alveoli present on a single respiratory bronchiole is termed as a lobule.

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Ch.23 How is Salmonella able to cross from the intestines into the blood? A. it is so small that it can squeeze between intestinal cells B. it secretes a toxin that induces its uptake into intestinal epithelial cells C. it secretes enzymes that create perforations in the intestine D. it can get into the blood only if the bacteria are deposited directly there, that is, through a puncture — Which virus is associated with liver cancer? A. hepatitis A B. hepatitis B C. hepatitis C D. both hepatitis B and C — explain your answer thoroughly

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Chapter 23, Problem 2DYKB

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Introduction:

Lungs are respiratory organs located in the thoracic cavity. Lungs consist of lobes. Right lung consists of three lobes, whereas left lung consists of two lobes. Lobes are further divided into bronchopulmonary segments. The right and left lobes of the lungs attach to the right and left bronchus respectively. The bronchus is further divided into many bronchioles that consist of alveoli. A bunch of alveoli present on a single respiratory bronchiole is termed as a lobule.

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