Diagnostic of Gas Exchange and Digestion

In which one of the following structures does gas exchange occur?

• alveolus

• bronchiole

• bronchus

• trachea

Which of the following occurs in the thorax during inhalation?

• volume decreases and pressure decreases

• volume decreases and pressure increases

• volume increases and pressure decreases

• volume increases and pressure increases

Which of the following will occur when blowing exhaled air through hydrogen carbonate indicator?

• indicator turns red due to increased carbon dioxide gas

• indicator turns red due to decreased oxygen gas

• indicator turns yellow due to increased carbon dioxide gas

• indicator turns yellow due to decreased oxygen gas

Some consequences of cigarette smoking are listed below. Which of these consequences could be caused by carbon monoxide gas? 1. reduced oxygen transport in the blood

2. babies with smaller birth mass

3. lung cancer

• 1 and 2

• 1 and 3

• 2 and 3

• 3 alone

A student carried out food tests on a meal. Which substances were present in the food?

• glucose and protein

• glucose and starch

• protein and starch

• protein and glucose

Which of these conditions is caused by a deficiency of vitamin C in the diet?

• night blindness

• obesity

• rickets

• scurvy

Below are some statements about digestion. Which of the statements are correct?

• protein is digested in the duodenum

• protein is digested in the stomach

• protein is digested in the mouth

The diagram shows a villus. Which line gives the correct names of the structures X, Y and Z?

• capillary, microvilli, lacteal

• lacteal, capillary, microvilli

• microvilli, lacteal, capillary

• microvilli, capillary, lacteal

Which of the following states the correct order of structures that food passes through?

• duodenum, ileum, colon, rectum

• duodenum, colon, ileum, rectum

• ileum, colon, rectum, duodenum

• ileum, duodenum, rectum, colon

Which line states the correct names for structures X and Y?

• left atrium, right ventricle

• left ventricle, right atrium

• right atrium, left ventricle

• right ventricle, left atrium