Digestive System 8, Small intestine and absorption full lecture

The brush border is composed of:

a. Circular folds

b. Villi

c. Microvilli

d. Smooth muscle

Choose one correct statement:

a. circular folds occur in the small and large intestine

b. circular folds consist of infolds of smooth muscle

c. the outer smooth muscular layer of the small intestine is composed of longitudinal fibres

d. the outer smooth muscular layer of the small intestine is composed of circular fibres

A villus is lined with:

Enterocytes

smooth muscle

stratified squamous epithelium

keratinised epithelium

Choose one correct statement:

a. In 7 year old children, the only product of protein digestion that is physiologically absorbed are single amino acid units.

b. In 7 year old children, the lining of the small intestine is probably permeable to large protein molecules such as bovine albumin.

c. If large protein molecules form any animal are absorbed into the blood of a 2-month-old child, the immune system will be too immature to generate an antibody response.

d. In the first few months of life the lining of the small intestine is probably permeable to large protein molecules such as bovine albumin.

e. None of the above statements are true

The only form of carbohydrate absorbed through the enterocytes lining a villus is:

a. Glucose

b. Sucrose

c. Galactose

d. Any monosaccharide

e. Any disaccharide