The walls of the alveoli are composed of two types of cells. What are these types of cells and their functions?

The correct answer is: Type 1 Pneumocytes, and Type 2 Pneumocytes.

Explanation:

The alveoli are structures that form a hollow cavity and are found in the lungs. Alveoli have the very important task of gas exchange, in which deoxygenated blood becomes oxygenated blood to be distributed to every organ in the body.

Alveoli walls are composed of two types of cells:

Type 1 Pneumocytes have the function of gas exchange between the capillaries, and for that reason, they are very thin and permeable.Type 2 Pneumocytes have the function to produce surfactant, a substance very important to maintain the elastic recoil of the lungs. Without surfactant, the lungs would collapse.

The answer is : $104,000                  

Explanation:

First, we have to lay out the particulars, and explain what each of them mean:

debit balance in account receivable = $32,000. This refers to an amount that cusomers owed the company at the beginning of the period.

revenue recorded = $88,000. This refers to the total sales made by the company.

At the end of the period, we are told that the account receivable contained a balance of $16,000

Therefore it means that after all the payments (both balance from previous period and sales transactions) have been made in cash, the amount which the customers owed the company = $16,000.

Hence the cash collected is calculated as follows

(debit balance at beginning + revenue) - debit balance at the end = cash collected

(32,000 + 88,000) - 16,000 = cash collected

120,000 - 16,000 = cash collected

cash collected = $104,000